Analysis

  • max time kernel
    153s
  • max time network
    160s
  • platform
    debian-12_mipsel
  • resource
    debian12-mipsel-20240729-en
  • resource tags

    arch:mipselimage:debian12-mipsel-20240729-enkernel:6.1.0-17-4kc-maltalocale:en-usos:debian-12-mipselsystem
  • submitted
    04-11-2024 16:27

General

  • Target

    linux_mipsel_softfloat.elf

  • Size

    5.6MB

  • MD5

    367d36e768c7cb7d7945cdf3c7a76d37

  • SHA1

    80940b9725f9194cc347e5efe987673f40c229a4

  • SHA256

    b0d15ae15ddea91eba49906e03e65787613fcad8b190190dfde9f3cf62ee2be3

  • SHA512

    19b4dcfd599d5969fcf483628b56d395553777b3c3d6c0ed965c05752e4128bce8522a7aacfcd8459e9e992fa0a900c39c8d08fd860d360aec0138b217d0dfa5

  • SSDEEP

    49152:+RxVVRFMTwIupkYzfgh7rxQ2USaU85Jbq1rQcR6VYv0VF1:

Malware Config

Signatures

  • Executes dropped EXE 4 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 5 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.

  • GoLang User-Agent 1 IoCs

    Uses default user-agent string defined by GoLang HTTP packages.

Processes

  • /tmp/linux_mipsel_softfloat.elf
    /tmp/linux_mipsel_softfloat.elf
    1⤵
    • Enumerates kernel/hardware configuration
    • System Network Configuration Discovery
    PID:732
    • /usr/bin/sh
      sh -c "/etc/32678&"
      2⤵
        PID:745
        • /etc/32678
          /etc/32678
          3⤵
          • Executes dropped EXE
          PID:748
          • /usr/bin/sleep
            sleep 60
            4⤵
              PID:759
            • /etc/id.services.conf
              /etc/id.services.conf
              4⤵
              • Executes dropped EXE
              • Enumerates kernel/hardware configuration
              PID:868
              • /usr/bin/pkill
                pkill -9 32678
                5⤵
                • Reads CPU attributes
                • Enumerates kernel/hardware configuration
                • Reads runtime system information
                PID:872
              • /usr/bin/sh
                sh -c "/etc/32678&"
                5⤵
                  PID:873
                  • /etc/32678
                    /etc/32678
                    6⤵
                    • Executes dropped EXE
                    PID:876
                    • /usr/bin/sleep
                      sleep 60
                      7⤵
                        PID:881
                  • /usr/sbin/service
                    service crond start
                    5⤵
                      PID:874
                      • /usr/bin/basename
                        basename /usr/sbin/service
                        6⤵
                          PID:877
                        • /usr/bin/basename
                          basename /usr/sbin/service
                          6⤵
                            PID:882
                          • /usr/bin/systemctl
                            systemctl list-unit-files --full "--type=socket"
                            6⤵
                              PID:884
                            • /usr/bin/sed
                              sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                              6⤵
                                PID:885
                            • /etc/id.services.conf
                              /etc/id.services.conf " "
                              5⤵
                              • Executes dropped EXE
                              • Enumerates kernel/hardware configuration
                              PID:875
                      • /usr/sbin/service
                        service crond start
                        2⤵
                          PID:746
                          • /usr/bin/basename
                            basename /usr/sbin/service
                            3⤵
                              PID:751
                            • /usr/bin/basename
                              basename /usr/sbin/service
                              3⤵
                                PID:754
                              • /usr/bin/systemctl
                                systemctl list-unit-files --full "--type=socket"
                                3⤵
                                  PID:761
                                • /usr/bin/sed
                                  sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                                  3⤵
                                    PID:762
                                • /tmp/linux_mipsel_softfloat.elf
                                  /tmp/linux_mipsel_softfloat.elf " "
                                  2⤵
                                  • Modifies Watchdog functionality
                                  • Modifies init.d
                                  • Modifies systemd
                                  • Enumerates kernel/hardware configuration
                                  • Reads runtime system information
                                  • System Network Configuration Discovery
                                  PID:747
                                  • /usr/sbin/update-rc.d
                                    update-rc.d linux_kill defaults
                                    3⤵
                                      PID:772
                                      • /usr/local/sbin/systemctl
                                        systemctl daemon-reload
                                        4⤵
                                          PID:801
                                        • /usr/local/bin/systemctl
                                          systemctl daemon-reload
                                          4⤵
                                            PID:801
                                          • /usr/sbin/systemctl
                                            systemctl daemon-reload
                                            4⤵
                                              PID:801
                                            • /usr/bin/systemctl
                                              systemctl daemon-reload
                                              4⤵
                                                PID:801
                                            • /usr/bin/sh
                                              sh -c "cd /boot;systemctl daemon-reload;systemctl enable linux.service;systemctl start linux.service;journalctl -xe --no-pager"
                                              3⤵
                                                PID:828
                                                • /usr/bin/systemctl
                                                  systemctl daemon-reload
                                                  4⤵
                                                    PID:829
                                                  • /usr/bin/systemctl
                                                    systemctl enable linux.service
                                                    4⤵
                                                      PID:851
                                                    • /usr/bin/systemctl
                                                      systemctl start linux.service
                                                      4⤵
                                                        PID:886
                                                      • /usr/bin/journalctl
                                                        journalctl -xe --no-pager
                                                        4⤵
                                                        • Reads runtime system information
                                                        PID:897
                                                    • /usr/bin/sh
                                                      sh -c "cd /boot;ausearch -c 'System.img.conf' --raw | audit2allow -M my-Systemimgconf;semodule -X 300 -i my-Systemimgconf.pp"
                                                      3⤵
                                                        PID:905
                                                        • /usr/bin/audit2allow
                                                          audit2allow -M my-Systemimgconf
                                                          4⤵
                                                            PID:907
                                                          • /usr/sbin/ausearch
                                                            ausearch -c System.img.conf --raw
                                                            4⤵
                                                            • Reads runtime system information
                                                            PID:906
                                                    • /usr/local/sbin/systemctl
                                                      systemctl start crond.service
                                                      1⤵
                                                        PID:746
                                                      • /usr/local/bin/systemctl
                                                        systemctl start crond.service
                                                        1⤵
                                                          PID:746
                                                        • /usr/sbin/systemctl
                                                          systemctl start crond.service
                                                          1⤵
                                                            PID:746
                                                          • /usr/bin/systemctl
                                                            systemctl start crond.service
                                                            1⤵
                                                              PID:746
                                                            • /usr/local/sbin/systemctl
                                                              systemctl start crond.service
                                                              1⤵
                                                                PID:874
                                                              • /usr/local/bin/systemctl
                                                                systemctl start crond.service
                                                                1⤵
                                                                  PID:874
                                                                • /usr/sbin/systemctl
                                                                  systemctl start crond.service
                                                                  1⤵
                                                                    PID:874
                                                                  • /usr/bin/systemctl
                                                                    systemctl start crond.service
                                                                    1⤵
                                                                      PID:874

                                                                    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

                                                                    • /usr/lib/systemd/system/linux.service

                                                                      Filesize

                                                                      207B

                                                                      MD5

                                                                      d80ccc7ced99538f22336f2ec0249087

                                                                      SHA1

                                                                      be4de9f604e065b53076a3d7ba702fe98c6b8746

                                                                      SHA256

                                                                      0dc3e8552c3e6217e0dc7fd440c7ba4c9cd6e676ce2561e4f71949d2783ae968

                                                                      SHA512

                                                                      d798e6516571fcd03bdffbd5405f320fb23422ceb563901658efa4101b4568eabc27730f40c0bcf6dde5509f01ba6965dd61f64675dad695924f1dea1746e6de