Analysis

  • max time kernel
    123s
  • max time network
    151s
  • platform
    debian-9_mipsel
  • resource
    debian9-mipsel-20240418-en
  • resource tags

    arch:mipselimage:debian9-mipsel-20240418-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem
  • submitted
    31-10-2024 23:16

General

  • Target

    linux_mipsel.elf

  • Size

    5.6MB

  • MD5

    5f7d6a8f455e8f7c990ef1541efc6199

  • SHA1

    b25948840f5fa898cacc888074010bf77a8843cd

  • SHA256

    be95b29da48e169996c492b3c95f55c8af679136df3adaabd24a5d67d3c2af41

  • SHA512

    ae3b3a70f9c1e5de164b534393e5cea48258a8c5ef43a0b9f22bb6caff483d6b2a0dfdfe933fc7a7e8ec15209994809aa620326d8b6bb30ea98ccf93bccd1079

  • SSDEEP

    98304:yC91hAFxvW6WGVqq7g3JDCg76dAuE8iW5ay5mIOX+aaNcc8pNkxXkz8xBs3K4HUO:yC91hAFxvW6WGVqq7g3JDCg76dAuE8ip

Malware Config

Signatures

  • Kaiji 1 IoCs

    Kaiji payload

  • Kaiji family
  • kaiji_chaosbot 1 IoCs

    Chaos-variant payload

  • Executes dropped EXE 6 IoCs
  • Creates/modifies Cron job 1 TTPs 1 IoCs

    Cron allows running tasks on a schedule, and is commonly used for malware persistence.

  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Changes its process name 1 IoCs
  • Reads CPU attributes 1 TTPs 2 IoCs
  • Enumerates kernel/hardware configuration 1 TTPs 17 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.elf
    /tmp/linux_mipsel.elf
    1⤵
    • Enumerates kernel/hardware configuration
    • System Network Configuration Discovery
    PID:712
    • /bin/sh
      sh -c "/etc/32678&"
      2⤵
        PID:727
        • /etc/32678
          /etc/32678
          3⤵
          • Executes dropped EXE
          PID:731
          • /bin/sleep
            sleep 60
            4⤵
              PID:736
            • /etc/id.services.conf
              /etc/id.services.conf
              4⤵
              • Executes dropped EXE
              • Enumerates kernel/hardware configuration
              PID:839
              • /usr/bin/pkill
                pkill -9 32678
                5⤵
                • Reads CPU attributes
                • Reads runtime system information
                PID:843
              • /bin/sh
                sh -c "/etc/32678&"
                5⤵
                  PID:844
                • /usr/sbin/service
                  service crond start
                  5⤵
                    PID:845
                    • /usr/bin/basename
                      basename /usr/sbin/service
                      6⤵
                        PID:850
                      • /usr/bin/basename
                        basename /usr/sbin/service
                        6⤵
                          PID:852
                        • /bin/systemctl
                          systemctl --quiet is-active multi-user.target
                          6⤵
                          • Enumerates kernel/hardware configuration
                          • Reads runtime system information
                          PID:854
                        • /bin/sed
                          sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                          6⤵
                            PID:857
                          • /bin/systemctl
                            systemctl list-unit-files --full "--type=socket"
                            6⤵
                            • Enumerates kernel/hardware configuration
                            • Reads runtime system information
                            PID:856
                        • /etc/id.services.conf
                          /etc/id.services.conf " "
                          5⤵
                          • Executes dropped EXE
                          • Enumerates kernel/hardware configuration
                          PID:846
                  • /usr/sbin/service
                    service crond start
                    2⤵
                      PID:728
                      • /usr/bin/basename
                        basename /usr/sbin/service
                        3⤵
                          PID:735
                        • /usr/bin/basename
                          basename /usr/sbin/service
                          3⤵
                            PID:742
                          • /bin/systemctl
                            systemctl --quiet is-active multi-user.target
                            3⤵
                            • Enumerates kernel/hardware configuration
                            • Reads runtime system information
                            PID:745
                          • /bin/systemctl
                            systemctl list-unit-files --full "--type=socket"
                            3⤵
                            • Enumerates kernel/hardware configuration
                            PID:751
                          • /bin/sed
                            sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                            3⤵
                            • Reads runtime system information
                            PID:752
                        • /tmp/linux_mipsel.elf
                          /tmp/linux_mipsel.elf " "
                          2⤵
                          • Changes its process name
                          • Enumerates kernel/hardware configuration
                          • System Network Configuration Discovery
                          PID:730
                          • /usr/sbin/update-rc.d
                            update-rc.d linux_kill defaults
                            3⤵
                              PID:743
                              • /usr/local/sbin/systemctl
                                systemctl daemon-reload
                                4⤵
                                  PID:756
                                • /usr/local/bin/systemctl
                                  systemctl daemon-reload
                                  4⤵
                                    PID:756
                                  • /usr/sbin/systemctl
                                    systemctl daemon-reload
                                    4⤵
                                      PID:756
                                    • /usr/bin/systemctl
                                      systemctl daemon-reload
                                      4⤵
                                        PID:756
                                      • /sbin/systemctl
                                        systemctl daemon-reload
                                        4⤵
                                          PID:756
                                        • /bin/systemctl
                                          systemctl daemon-reload
                                          4⤵
                                          • Enumerates kernel/hardware configuration
                                          PID:756
                                      • /bin/bash
                                        bash -c "echo \"*/1 * * * * root /.img \" >> /etc/crontab"
                                        3⤵
                                        • Creates/modifies Cron job
                                        PID:762
                                      • /usr/bin/renice
                                        renice -20 730
                                        3⤵
                                          PID:764
                                        • /bin/mount
                                          mount -o bind /tmp/ /proc/730
                                          3⤵
                                            PID:766
                                          • /usr/sbin/service
                                            service cron start
                                            3⤵
                                              PID:767
                                              • /usr/bin/basename
                                                basename /usr/sbin/service
                                                4⤵
                                                  PID:768
                                                • /usr/bin/basename
                                                  basename /usr/sbin/service
                                                  4⤵
                                                    PID:769
                                                  • /bin/systemctl
                                                    systemctl --quiet is-active multi-user.target
                                                    4⤵
                                                    • Enumerates kernel/hardware configuration
                                                    PID:771
                                                  • /bin/systemctl
                                                    systemctl list-unit-files --full "--type=socket"
                                                    4⤵
                                                    • Enumerates kernel/hardware configuration
                                                    • Reads runtime system information
                                                    PID:773
                                                  • /bin/sed
                                                    sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                                                    4⤵
                                                      PID:774
                                                  • /usr/local/sbin/systemctl
                                                    systemctl "--job-mode=ignore-dependencies" start cron.service
                                                    3⤵
                                                      PID:767
                                                    • /usr/local/bin/systemctl
                                                      systemctl "--job-mode=ignore-dependencies" start cron.service
                                                      3⤵
                                                        PID:767
                                                      • /usr/sbin/systemctl
                                                        systemctl "--job-mode=ignore-dependencies" start cron.service
                                                        3⤵
                                                          PID:767
                                                        • /usr/bin/systemctl
                                                          systemctl "--job-mode=ignore-dependencies" start cron.service
                                                          3⤵
                                                            PID:767
                                                          • /sbin/systemctl
                                                            systemctl "--job-mode=ignore-dependencies" start cron.service
                                                            3⤵
                                                              PID:767
                                                            • /bin/systemctl
                                                              systemctl "--job-mode=ignore-dependencies" start cron.service
                                                              3⤵
                                                              • Enumerates kernel/hardware configuration
                                                              • Reads runtime system information
                                                              PID:767
                                                            • /bin/systemctl
                                                              systemctl start crond.service
                                                              3⤵
                                                              • Enumerates kernel/hardware configuration
                                                              • Reads runtime system information
                                                              PID:775
                                                        • /usr/local/sbin/systemctl
                                                          systemctl "--job-mode=ignore-dependencies" start crond.service
                                                          1⤵
                                                            PID:728
                                                          • /usr/local/bin/systemctl
                                                            systemctl "--job-mode=ignore-dependencies" start crond.service
                                                            1⤵
                                                              PID:728
                                                            • /usr/sbin/systemctl
                                                              systemctl "--job-mode=ignore-dependencies" start crond.service
                                                              1⤵
                                                                PID:728
                                                              • /usr/bin/systemctl
                                                                systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                1⤵
                                                                  PID:728
                                                                • /sbin/systemctl
                                                                  systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                  1⤵
                                                                    PID:728
                                                                  • /bin/systemctl
                                                                    systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                    1⤵
                                                                    • Enumerates kernel/hardware configuration
                                                                    PID:728
                                                                  • /etc/32678
                                                                    /etc/32678
                                                                    1⤵
                                                                    • Executes dropped EXE
                                                                    PID:851
                                                                    • /bin/sleep
                                                                      sleep 60
                                                                      2⤵
                                                                        PID:853
                                                                      • /etc/id.services.conf
                                                                        /etc/id.services.conf
                                                                        2⤵
                                                                        • Executes dropped EXE
                                                                        • Enumerates kernel/hardware configuration
                                                                        PID:870
                                                                        • /usr/bin/pkill
                                                                          pkill -9 32678
                                                                          3⤵
                                                                          • Reads CPU attributes
                                                                          • Reads runtime system information
                                                                          PID:874
                                                                        • /bin/sh
                                                                          sh -c "/etc/32678&"
                                                                          3⤵
                                                                            PID:875
                                                                          • /usr/sbin/service
                                                                            service crond start
                                                                            3⤵
                                                                              PID:876
                                                                            • /etc/id.services.conf
                                                                              /etc/id.services.conf " "
                                                                              3⤵
                                                                              • Executes dropped EXE
                                                                              • Enumerates kernel/hardware configuration
                                                                              PID:877
                                                                        • /usr/local/sbin/systemctl
                                                                          systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                          1⤵
                                                                            PID:845
                                                                          • /usr/local/bin/systemctl
                                                                            systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                            1⤵
                                                                              PID:845
                                                                            • /usr/sbin/systemctl
                                                                              systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                              1⤵
                                                                                PID:845
                                                                              • /usr/bin/systemctl
                                                                                systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                                1⤵
                                                                                  PID:845
                                                                                • /sbin/systemctl
                                                                                  systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                                  1⤵
                                                                                    PID:845
                                                                                  • /bin/systemctl
                                                                                    systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                                    1⤵
                                                                                    • Enumerates kernel/hardware configuration
                                                                                    • Reads runtime system information
                                                                                    PID:845

                                                                                  Network

                                                                                  MITRE ATT&CK Enterprise v15

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                                                                                  Downloads

                                                                                  • /.img

                                                                                    Filesize

                                                                                    33B

                                                                                    MD5

                                                                                    d73d3376908ea075a939e3871ad0fabe

                                                                                    SHA1

                                                                                    320ff65831247ba199515f1b94df26cc8a3e5f76

                                                                                    SHA256

                                                                                    edbdabe30d8236a2c0a4eb89dfd597552130e4c1a4e93f8fe1568920442ad73a

                                                                                    SHA512

                                                                                    57b83fef88620598beb5d65626bf757d0abef242d2d6a01796a61474dedc5095a4a9d0f292b6abb450cad3d4410ab8456253600f58ddb66cfe6d79e1c8415536

                                                                                  • /etc/32678

                                                                                    Filesize

                                                                                    61B

                                                                                    MD5

                                                                                    768eaf287796da19e1cf5e0b2fb1b161

                                                                                    SHA1

                                                                                    6a1ce2ee5ccc86d1f33806feb14547b35290df2a

                                                                                    SHA256

                                                                                    1d22620dfb2a6715e5d745aed5cf841ede0e75e1747f12b9b925a2d346bc7ecb

                                                                                    SHA512

                                                                                    e6af30c9df4f7f47696069511e64ecbc8e841629d692ee4056503df3533fb7a7a74960698826260355e1dba7b6c562482a27a39bb51a4237473ce4b68472d620

                                                                                  • /etc/id.services.conf

                                                                                    Filesize

                                                                                    5.6MB

                                                                                    MD5

                                                                                    5f7d6a8f455e8f7c990ef1541efc6199

                                                                                    SHA1

                                                                                    b25948840f5fa898cacc888074010bf77a8843cd

                                                                                    SHA256

                                                                                    be95b29da48e169996c492b3c95f55c8af679136df3adaabd24a5d67d3c2af41

                                                                                    SHA512

                                                                                    ae3b3a70f9c1e5de164b534393e5cea48258a8c5ef43a0b9f22bb6caff483d6b2a0dfdfe933fc7a7e8ec15209994809aa620326d8b6bb30ea98ccf93bccd1079

                                                                                  • /etc/init.d/linux_kill

                                                                                    Filesize

                                                                                    189B

                                                                                    MD5

                                                                                    3909975f7cc0d1121c1819b800069f31

                                                                                    SHA1

                                                                                    3e68de708c2e6c40fab6794afdee3104e5590189

                                                                                    SHA256

                                                                                    6876dac71f13a068afb863d257134275f2edba43b2acaf4924fabf97c079070b

                                                                                    SHA512

                                                                                    50600cceeb03b05f45ae61d890caee9f51ff390b6776930866e527e071d65d08241fc66673fd9b99d62fbc77d3c00fc3de4d7378cbc42f5daba5d83072b0906e

                                                                                  • /etc/profile.d/bash_config.sh

                                                                                    Filesize

                                                                                    37B

                                                                                    MD5

                                                                                    cfb4e51061485fe91169381fbdc1538e

                                                                                    SHA1

                                                                                    9a85b9b766a15b01737a41d680e4593b7a9bde87

                                                                                    SHA256

                                                                                    897f37267d0ceaa2fbdaa09847f5d08e6f8b01a0348a0d666264b0f10acd0c90

                                                                                    SHA512

                                                                                    fb154ec711d2090a7461da4db8ddad2b522649a27e74162ecb203f539b1729430288bc02d78d2071bde9c4bbc005693403a57612ef50277d52f816cb94524216