Analysis

  • max time kernel
    153s
  • max time network
    166s
  • platform
    debian-12_mipsel
  • resource
    debian12-mipsel-20240221-en
  • resource tags

    arch:mipselimage:debian12-mipsel-20240221-enkernel:6.1.0-17-4kc-maltalocale:en-usos:debian-12-mipselsystem
  • submitted
    08-11-2024 09:24

General

  • Target

    linux_mipsel.elf

  • Size

    5.6MB

  • MD5

    51c38d64622a147b3cebff1d0673f84c

  • SHA1

    53b2f3bff3137e6e963864f07e6c720e495bc530

  • SHA256

    5d93f66e884ea78188a88fe09933c4fbcce638e8653f9a29e7c093a24833b65a

  • SHA512

    f54df32d0f3be7f72a483fc07a72d183be3fc880116b6618afcd48de3f5ab237e1f2dc8aa96877d4278441e0477cdb348dea0583fbdf9b572b17dd6fcae115bc

  • SSDEEP

    98304:yC91hAFxvW6WGVqq7g3JDCg76dAuE8iW5ay5mIOX+aaNcc8pNkxXkz8xBs3K4HUK:yC91hAFxvW6WGVqq7g3JDCg76dAuE8i1

Malware Config

Signatures

  • Executes dropped EXE 5 IoCs
  • Modifies Watchdog functionality 1 TTPs 2 IoCs

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

  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Modifies init.d 2 TTPs 1 IoCs

    Adds/modifies system service, likely for persistence.

  • Modifies systemd 2 TTPs 1 IoCs

    Adds/ modifies systemd service files. Likely to achieve persistence.

  • Reads CPU attributes 1 TTPs 1 IoCs
  • Enumerates kernel/hardware configuration 1 TTPs 6 IoCs

    Reads contents of /sys virtual filesystem to enumerate system information.

  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

  • System Network Configuration Discovery 1 TTPs 2 IoCs

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

Processes

  • /tmp/linux_mipsel.elf
    /tmp/linux_mipsel.elf
    1⤵
    • Enumerates kernel/hardware configuration
    • System Network Configuration Discovery
    PID:745
    • /usr/bin/sh
      sh -c "/etc/32678&"
      2⤵
        PID:767
      • /usr/sbin/service
        service crond start
        2⤵
          PID:768
          • /usr/bin/basename
            basename /usr/sbin/service
            3⤵
              PID:773
            • /usr/bin/basename
              basename /usr/sbin/service
              3⤵
                PID:779
              • /usr/bin/systemctl
                systemctl list-unit-files --full "--type=socket"
                3⤵
                  PID:782
                • /usr/bin/sed
                  sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                  3⤵
                    PID:783
                • /tmp/linux_mipsel.elf
                  /tmp/linux_mipsel.elf " "
                  2⤵
                  • Modifies Watchdog functionality
                  • Modifies init.d
                  • Modifies systemd
                  • Enumerates kernel/hardware configuration
                  • Reads runtime system information
                  • System Network Configuration Discovery
                  PID:769
                  • /usr/sbin/update-rc.d
                    update-rc.d linux_kill defaults
                    3⤵
                      PID:789
                      • /usr/local/sbin/systemctl
                        systemctl daemon-reload
                        4⤵
                          PID:803
                        • /usr/local/bin/systemctl
                          systemctl daemon-reload
                          4⤵
                            PID:803
                          • /usr/sbin/systemctl
                            systemctl daemon-reload
                            4⤵
                              PID:803
                            • /usr/bin/systemctl
                              systemctl daemon-reload
                              4⤵
                                PID:803
                            • /usr/bin/sh
                              sh -c "cd /boot;systemctl daemon-reload;systemctl enable linux.service;systemctl start linux.service;journalctl -xe --no-pager"
                              3⤵
                                PID:825
                                • /usr/bin/systemctl
                                  systemctl daemon-reload
                                  4⤵
                                    PID:826
                                  • /usr/bin/systemctl
                                    systemctl enable linux.service
                                    4⤵
                                      PID:863
                                    • /usr/bin/systemctl
                                      systemctl start linux.service
                                      4⤵
                                        PID:880
                                      • /usr/bin/journalctl
                                        journalctl -xe --no-pager
                                        4⤵
                                          PID:897
                                  • /etc/32678
                                    /etc/32678
                                    1⤵
                                    • Executes dropped EXE
                                    PID:771
                                    • /usr/bin/sleep
                                      sleep 60
                                      2⤵
                                        PID:777
                                      • /etc/id.services.conf
                                        /etc/id.services.conf
                                        2⤵
                                        • Executes dropped EXE
                                        • Enumerates kernel/hardware configuration
                                        PID:842
                                        • /usr/bin/pkill
                                          pkill -9 32678
                                          3⤵
                                          • Reads CPU attributes
                                          • Enumerates kernel/hardware configuration
                                          • Reads runtime system information
                                          PID:846
                                        • /usr/bin/sh
                                          sh -c "/etc/32678&"
                                          3⤵
                                            PID:848
                                          • /usr/sbin/service
                                            service crond start
                                            3⤵
                                              PID:849
                                              • /usr/bin/basename
                                                basename /usr/sbin/service
                                                4⤵
                                                  PID:852
                                                • /usr/bin/basename
                                                  basename /usr/sbin/service
                                                  4⤵
                                                    PID:854
                                                  • /usr/bin/systemctl
                                                    systemctl list-unit-files --full "--type=socket"
                                                    4⤵
                                                      PID:859
                                                    • /usr/bin/sed
                                                      sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                                                      4⤵
                                                        PID:860
                                                    • /etc/id.services.conf
                                                      /etc/id.services.conf " "
                                                      3⤵
                                                      • Executes dropped EXE
                                                      • Enumerates kernel/hardware configuration
                                                      PID:850
                                                • /usr/local/sbin/systemctl
                                                  systemctl start crond.service
                                                  1⤵
                                                    PID:768
                                                  • /usr/local/bin/systemctl
                                                    systemctl start crond.service
                                                    1⤵
                                                      PID:768
                                                    • /usr/sbin/systemctl
                                                      systemctl start crond.service
                                                      1⤵
                                                        PID:768
                                                      • /usr/bin/systemctl
                                                        systemctl start crond.service
                                                        1⤵
                                                          PID:768
                                                        • /etc/32678
                                                          /etc/32678
                                                          1⤵
                                                          • Executes dropped EXE
                                                          PID:851
                                                          • /usr/bin/sleep
                                                            sleep 60
                                                            2⤵
                                                              PID:853
                                                            • /etc/id.services.conf
                                                              /etc/id.services.conf
                                                              2⤵
                                                              • Executes dropped EXE
                                                              • Enumerates kernel/hardware configuration
                                                              PID:888
                                                          • /usr/local/sbin/systemctl
                                                            systemctl start crond.service
                                                            1⤵
                                                              PID:849
                                                            • /usr/local/bin/systemctl
                                                              systemctl start crond.service
                                                              1⤵
                                                                PID:849
                                                              • /usr/sbin/systemctl
                                                                systemctl start crond.service
                                                                1⤵
                                                                  PID:849
                                                                • /usr/bin/systemctl
                                                                  systemctl start crond.service
                                                                  1⤵
                                                                    PID:849

                                                                  Network

                                                                  MITRE ATT&CK Enterprise v15

                                                                  Replay Monitor

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                                                                  Downloads

                                                                  • /etc/32678

                                                                    Filesize

                                                                    61B

                                                                    MD5

                                                                    768eaf287796da19e1cf5e0b2fb1b161

                                                                    SHA1

                                                                    6a1ce2ee5ccc86d1f33806feb14547b35290df2a

                                                                    SHA256

                                                                    1d22620dfb2a6715e5d745aed5cf841ede0e75e1747f12b9b925a2d346bc7ecb

                                                                    SHA512

                                                                    e6af30c9df4f7f47696069511e64ecbc8e841629d692ee4056503df3533fb7a7a74960698826260355e1dba7b6c562482a27a39bb51a4237473ce4b68472d620

                                                                  • /etc/init.d/linux_kill

                                                                    Filesize

                                                                    189B

                                                                    MD5

                                                                    3909975f7cc0d1121c1819b800069f31

                                                                    SHA1

                                                                    3e68de708c2e6c40fab6794afdee3104e5590189

                                                                    SHA256

                                                                    6876dac71f13a068afb863d257134275f2edba43b2acaf4924fabf97c079070b

                                                                    SHA512

                                                                    50600cceeb03b05f45ae61d890caee9f51ff390b6776930866e527e071d65d08241fc66673fd9b99d62fbc77d3c00fc3de4d7378cbc42f5daba5d83072b0906e