Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    debian-9_mips
  • resource
    debian9-mipsbe-20240611-en
  • resource tags

    arch:mipsimage:debian9-mipsbe-20240611-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipssystem
  • submitted
    05-11-2024 03:53

General

  • Target

    85c0c57eed2a9c08b00919203227ba566a1239457b2edf88ea83d82b4b5e551e.elf

  • Size

    5.6MB

  • MD5

    17fac7ffcec5df4d624a5e46c3ce97d1

  • SHA1

    21c0af1bd2753963f2444b999d646a7ed6f02033

  • SHA256

    85c0c57eed2a9c08b00919203227ba566a1239457b2edf88ea83d82b4b5e551e

  • SHA512

    90026422a550a6f10b6a0b8dac521a2ce4a0f9575f5c177ebf70d71ad1a815aa0aebada2e188207b8dfb6ba10597c4d59c4ff037e7b766bb55144b9a0413bcde

  • SSDEEP

    49152:L3qbSw1zUu72RTScFnsKbyRHzPDPs4coYtJkEk2wBIxWyDp/9zUH+zOuux83ZIqG:jqO0o2pgDQ

Malware Config

Signatures

  • Kaiji 1 IoCs

    Kaiji payload

  • Kaiji family
  • kaiji_chaosbot 1 IoCs

    Chaos-variant payload

  • Executes dropped EXE 4 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 1 IoCs
  • Enumerates kernel/hardware configuration 1 TTPs 15 IoCs

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

  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

  • GoLang User-Agent 1 IoCs

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

Processes

  • /tmp/85c0c57eed2a9c08b00919203227ba566a1239457b2edf88ea83d82b4b5e551e.elf
    /tmp/85c0c57eed2a9c08b00919203227ba566a1239457b2edf88ea83d82b4b5e551e.elf
    1⤵
    • Enumerates kernel/hardware configuration
    PID:704
    • /bin/sh
      sh -c "/etc/32678&"
      2⤵
        PID:719
      • /usr/sbin/service
        service crond start
        2⤵
          PID:720
          • /usr/bin/basename
            basename /usr/sbin/service
            3⤵
              PID:727
            • /usr/bin/basename
              basename /usr/sbin/service
              3⤵
                PID:735
              • /bin/systemctl
                systemctl --quiet is-active multi-user.target
                3⤵
                • Enumerates kernel/hardware configuration
                • Reads runtime system information
                PID:737
              • /bin/systemctl
                systemctl list-unit-files --full "--type=socket"
                3⤵
                • Enumerates kernel/hardware configuration
                • Reads runtime system information
                PID:742
              • /bin/sed
                sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                3⤵
                  PID:743
              • /tmp/85c0c57eed2a9c08b00919203227ba566a1239457b2edf88ea83d82b4b5e551e.elf
                /tmp/85c0c57eed2a9c08b00919203227ba566a1239457b2edf88ea83d82b4b5e551e.elf " "
                2⤵
                • Changes its process name
                • Enumerates kernel/hardware configuration
                PID:721
                • /usr/sbin/update-rc.d
                  update-rc.d linux_kill defaults
                  3⤵
                    PID:732
                    • /usr/local/sbin/systemctl
                      systemctl daemon-reload
                      4⤵
                        PID:749
                      • /usr/local/bin/systemctl
                        systemctl daemon-reload
                        4⤵
                          PID:749
                        • /usr/sbin/systemctl
                          systemctl daemon-reload
                          4⤵
                            PID:749
                          • /usr/bin/systemctl
                            systemctl daemon-reload
                            4⤵
                              PID:749
                            • /sbin/systemctl
                              systemctl daemon-reload
                              4⤵
                                PID:749
                              • /bin/systemctl
                                systemctl daemon-reload
                                4⤵
                                • Enumerates kernel/hardware configuration
                                PID:749
                            • /bin/bash
                              bash -c "echo \"*/1 * * * * root /.img \" >> /etc/crontab"
                              3⤵
                              • Creates/modifies Cron job
                              PID:755
                            • /usr/bin/renice
                              renice -20 721
                              3⤵
                                PID:761
                              • /bin/mount
                                mount -o bind /tmp/ /proc/721
                                3⤵
                                • Reads runtime system information
                                PID:762
                              • /usr/sbin/service
                                service cron start
                                3⤵
                                  PID:763
                                  • /usr/bin/basename
                                    basename /usr/sbin/service
                                    4⤵
                                      PID:764
                                    • /usr/bin/basename
                                      basename /usr/sbin/service
                                      4⤵
                                        PID:765
                                      • /bin/systemctl
                                        systemctl --quiet is-active multi-user.target
                                        4⤵
                                        • Enumerates kernel/hardware configuration
                                        • Reads runtime system information
                                        PID:766
                                      • /bin/systemctl
                                        systemctl list-unit-files --full "--type=socket"
                                        4⤵
                                        • Enumerates kernel/hardware configuration
                                        • Reads runtime system information
                                        PID:768
                                      • /bin/sed
                                        sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                                        4⤵
                                          PID:769
                                      • /usr/local/sbin/systemctl
                                        systemctl "--job-mode=ignore-dependencies" start cron.service
                                        3⤵
                                          PID:763
                                        • /usr/local/bin/systemctl
                                          systemctl "--job-mode=ignore-dependencies" start cron.service
                                          3⤵
                                            PID:763
                                          • /usr/sbin/systemctl
                                            systemctl "--job-mode=ignore-dependencies" start cron.service
                                            3⤵
                                              PID:763
                                            • /usr/bin/systemctl
                                              systemctl "--job-mode=ignore-dependencies" start cron.service
                                              3⤵
                                                PID:763
                                              • /sbin/systemctl
                                                systemctl "--job-mode=ignore-dependencies" start cron.service
                                                3⤵
                                                  PID:763
                                                • /bin/systemctl
                                                  systemctl "--job-mode=ignore-dependencies" start cron.service
                                                  3⤵
                                                  • Enumerates kernel/hardware configuration
                                                  • Reads runtime system information
                                                  PID:763
                                                • /bin/systemctl
                                                  systemctl start crond.service
                                                  3⤵
                                                  • Enumerates kernel/hardware configuration
                                                  PID:770
                                            • /etc/32678
                                              /etc/32678
                                              1⤵
                                              • Executes dropped EXE
                                              PID:726
                                              • /bin/sleep
                                                sleep 60
                                                2⤵
                                                  PID:734
                                                • /etc/id.services.conf
                                                  /etc/id.services.conf
                                                  2⤵
                                                  • Executes dropped EXE
                                                  • Enumerates kernel/hardware configuration
                                                  PID:777
                                                  • /usr/bin/pkill
                                                    pkill -9 32678
                                                    3⤵
                                                    • Reads CPU attributes
                                                    • Reads runtime system information
                                                    PID:781
                                                  • /bin/sh
                                                    sh -c "/etc/32678&"
                                                    3⤵
                                                      PID:782
                                                    • /usr/sbin/service
                                                      service crond start
                                                      3⤵
                                                        PID:783
                                                        • /usr/bin/basename
                                                          basename /usr/sbin/service
                                                          4⤵
                                                            PID:786
                                                          • /usr/bin/basename
                                                            basename /usr/sbin/service
                                                            4⤵
                                                              PID:791
                                                            • /bin/systemctl
                                                              systemctl --quiet is-active multi-user.target
                                                              4⤵
                                                              • Enumerates kernel/hardware configuration
                                                              • Reads runtime system information
                                                              PID:794
                                                            • /bin/sed
                                                              sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                                                              4⤵
                                                              • Reads runtime system information
                                                              PID:798
                                                            • /bin/systemctl
                                                              systemctl list-unit-files --full "--type=socket"
                                                              4⤵
                                                              • Enumerates kernel/hardware configuration
                                                              • Reads runtime system information
                                                              PID:797
                                                          • /etc/id.services.conf
                                                            /etc/id.services.conf " "
                                                            3⤵
                                                            • Executes dropped EXE
                                                            • Enumerates kernel/hardware configuration
                                                            PID:785
                                                      • /usr/local/sbin/systemctl
                                                        systemctl "--job-mode=ignore-dependencies" start crond.service
                                                        1⤵
                                                          PID:720
                                                        • /usr/local/bin/systemctl
                                                          systemctl "--job-mode=ignore-dependencies" start crond.service
                                                          1⤵
                                                            PID:720
                                                          • /usr/sbin/systemctl
                                                            systemctl "--job-mode=ignore-dependencies" start crond.service
                                                            1⤵
                                                              PID:720
                                                            • /usr/bin/systemctl
                                                              systemctl "--job-mode=ignore-dependencies" start crond.service
                                                              1⤵
                                                                PID:720
                                                              • /sbin/systemctl
                                                                systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                1⤵
                                                                  PID:720
                                                                • /bin/systemctl
                                                                  systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                  1⤵
                                                                  • Enumerates kernel/hardware configuration
                                                                  • Reads runtime system information
                                                                  PID:720
                                                                • /etc/32678
                                                                  /etc/32678
                                                                  1⤵
                                                                  • Executes dropped EXE
                                                                  PID:784
                                                                  • /bin/sleep
                                                                    sleep 60
                                                                    2⤵
                                                                      PID:787
                                                                  • /usr/local/sbin/systemctl
                                                                    systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                    1⤵
                                                                      PID:783
                                                                    • /usr/local/bin/systemctl
                                                                      systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                      1⤵
                                                                        PID:783
                                                                      • /usr/sbin/systemctl
                                                                        systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                        1⤵
                                                                          PID:783
                                                                        • /usr/bin/systemctl
                                                                          systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                          1⤵
                                                                            PID:783
                                                                          • /sbin/systemctl
                                                                            systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                            1⤵
                                                                              PID:783
                                                                            • /bin/systemctl
                                                                              systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                              1⤵
                                                                              • Enumerates kernel/hardware configuration
                                                                              • Reads runtime system information
                                                                              PID:783

                                                                            Network

                                                                            MITRE ATT&CK Enterprise v15

                                                                            Replay Monitor

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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

                                                                              17fac7ffcec5df4d624a5e46c3ce97d1

                                                                              SHA1

                                                                              21c0af1bd2753963f2444b999d646a7ed6f02033

                                                                              SHA256

                                                                              85c0c57eed2a9c08b00919203227ba566a1239457b2edf88ea83d82b4b5e551e

                                                                              SHA512

                                                                              90026422a550a6f10b6a0b8dac521a2ce4a0f9575f5c177ebf70d71ad1a815aa0aebada2e188207b8dfb6ba10597c4d59c4ff037e7b766bb55144b9a0413bcde

                                                                            • /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