Analysis

  • max time kernel
    124s
  • max time network
    155s
  • platform
    debian-9_mipsel
  • resource
    debian9-mipsel-20240226-en
  • resource tags

    arch:mipselimage:debian9-mipsel-20240226-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem
  • submitted
    31-10-2024 23:31

General

  • Target

    linux_mipsel_softfloat.elf

  • Size

    5.6MB

  • MD5

    ad1e0eac7b5a21d48787c13116526ff6

  • SHA1

    cdd1a9a416f8c6ffa4dc70638990376695fafbf0

  • SHA256

    2ea79246ca36e0bfd5c1968d4344d2b74e3c230be19867732968d63577084f06

  • SHA512

    e32c24f20f66e2945eff0fbe0dc17bf9850a22455b4d4f272008cc40587ec57995c53e6ce7c046271c4c33faf5e424d53676590ad5e21d22061c39ba48dd6c4c

  • SSDEEP

    49152:+RxVVRFMTwrupkYzfgh7rxQ2USaU85Jbq1rQcR6VYv0VF1:

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 27 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:710
    • /bin/sh
      sh -c "/etc/32678&"
      2⤵
        PID:723
      • /usr/sbin/service
        service crond start
        2⤵
          PID:725
          • /usr/bin/basename
            basename /usr/sbin/service
            3⤵
              PID:732
            • /usr/bin/basename
              basename /usr/sbin/service
              3⤵
                PID:741
              • /bin/systemctl
                systemctl --quiet is-active multi-user.target
                3⤵
                • Enumerates kernel/hardware configuration
                • Reads runtime system information
                PID:743
              • /bin/sed
                sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                3⤵
                  PID:749
                • /bin/systemctl
                  systemctl list-unit-files --full "--type=socket"
                  3⤵
                  • Enumerates kernel/hardware configuration
                  PID:748
              • /tmp/linux_mipsel_softfloat.elf
                /tmp/linux_mipsel_softfloat.elf " "
                2⤵
                • Changes its process name
                • Enumerates kernel/hardware configuration
                • System Network Configuration Discovery
                PID:726
                • /usr/sbin/update-rc.d
                  update-rc.d linux_kill defaults
                  3⤵
                    PID:738
                    • /usr/local/sbin/systemctl
                      systemctl daemon-reload
                      4⤵
                        PID:755
                      • /usr/local/bin/systemctl
                        systemctl daemon-reload
                        4⤵
                          PID:755
                        • /usr/sbin/systemctl
                          systemctl daemon-reload
                          4⤵
                            PID:755
                          • /usr/bin/systemctl
                            systemctl daemon-reload
                            4⤵
                              PID:755
                            • /sbin/systemctl
                              systemctl daemon-reload
                              4⤵
                                PID:755
                              • /bin/systemctl
                                systemctl daemon-reload
                                4⤵
                                • Enumerates kernel/hardware configuration
                                • Reads runtime system information
                                PID:755
                            • /bin/bash
                              bash -c "echo \"*/1 * * * * root /.img \" >> /etc/crontab"
                              3⤵
                              • Creates/modifies Cron job
                              PID:760
                            • /usr/bin/renice
                              renice -20 726
                              3⤵
                                PID:763
                              • /bin/mount
                                mount -o bind /tmp/ /proc/726
                                3⤵
                                  PID:764
                                • /usr/sbin/service
                                  service cron start
                                  3⤵
                                    PID:765
                                    • /usr/bin/basename
                                      basename /usr/sbin/service
                                      4⤵
                                        PID:766
                                      • /usr/bin/basename
                                        basename /usr/sbin/service
                                        4⤵
                                          PID:767
                                        • /bin/systemctl
                                          systemctl --quiet is-active multi-user.target
                                          4⤵
                                          • Enumerates kernel/hardware configuration
                                          • Reads runtime system information
                                          PID:768
                                        • /bin/systemctl
                                          systemctl list-unit-files --full "--type=socket"
                                          4⤵
                                          • Enumerates kernel/hardware configuration
                                          • Reads runtime system information
                                          PID:770
                                        • /bin/sed
                                          sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                                          4⤵
                                            PID:771
                                          • /bin/systemctl
                                            systemctl -p Triggers show dbus.socket
                                            4⤵
                                            • Enumerates kernel/hardware configuration
                                            • Reads runtime system information
                                            PID:772
                                          • /bin/systemctl
                                            systemctl -p Triggers show ssh.socket
                                            4⤵
                                            • Enumerates kernel/hardware configuration
                                            • Reads runtime system information
                                            PID:773
                                          • /bin/systemctl
                                            systemctl -p Triggers show syslog.socket
                                            4⤵
                                            • Enumerates kernel/hardware configuration
                                            • Reads runtime system information
                                            PID:774
                                          • /bin/systemctl
                                            systemctl -p Triggers show systemd-fsckd.socket
                                            4⤵
                                            • Enumerates kernel/hardware configuration
                                            • Reads runtime system information
                                            PID:775
                                          • /bin/systemctl
                                            systemctl -p Triggers show systemd-initctl.socket
                                            4⤵
                                            • Enumerates kernel/hardware configuration
                                            PID:776
                                          • /bin/systemctl
                                            systemctl -p Triggers show systemd-journald-audit.socket
                                            4⤵
                                            • Enumerates kernel/hardware configuration
                                            PID:777
                                          • /bin/systemctl
                                            systemctl -p Triggers show systemd-journald-dev-log.socket
                                            4⤵
                                            • Enumerates kernel/hardware configuration
                                            • Reads runtime system information
                                            PID:778
                                          • /bin/systemctl
                                            systemctl -p Triggers show systemd-journald.socket
                                            4⤵
                                            • Enumerates kernel/hardware configuration
                                            • Reads runtime system information
                                            PID:779
                                          • /bin/systemctl
                                            systemctl -p Triggers show systemd-networkd.socket
                                            4⤵
                                            • Enumerates kernel/hardware configuration
                                            PID:780
                                          • /bin/systemctl
                                            systemctl -p Triggers show systemd-rfkill.socket
                                            4⤵
                                            • Enumerates kernel/hardware configuration
                                            PID:784
                                          • /bin/systemctl
                                            systemctl -p Triggers show systemd-udevd-control.socket
                                            4⤵
                                            • Enumerates kernel/hardware configuration
                                            • Reads runtime system information
                                            PID:785
                                          • /bin/systemctl
                                            systemctl -p Triggers show systemd-udevd-kernel.socket
                                            4⤵
                                            • Enumerates kernel/hardware configuration
                                            • Reads runtime system information
                                            PID:786
                                        • /usr/local/sbin/systemctl
                                          systemctl "--job-mode=ignore-dependencies" start cron.service
                                          3⤵
                                            PID:765
                                          • /usr/local/bin/systemctl
                                            systemctl "--job-mode=ignore-dependencies" start cron.service
                                            3⤵
                                              PID:765
                                            • /usr/sbin/systemctl
                                              systemctl "--job-mode=ignore-dependencies" start cron.service
                                              3⤵
                                                PID:765
                                              • /usr/bin/systemctl
                                                systemctl "--job-mode=ignore-dependencies" start cron.service
                                                3⤵
                                                  PID:765
                                                • /sbin/systemctl
                                                  systemctl "--job-mode=ignore-dependencies" start cron.service
                                                  3⤵
                                                    PID:765
                                                  • /bin/systemctl
                                                    systemctl "--job-mode=ignore-dependencies" start cron.service
                                                    3⤵
                                                    • Enumerates kernel/hardware configuration
                                                    • Reads runtime system information
                                                    PID:765
                                                  • /bin/systemctl
                                                    systemctl start crond.service
                                                    3⤵
                                                    • Enumerates kernel/hardware configuration
                                                    • Reads runtime system information
                                                    PID:787
                                              • /etc/32678
                                                /etc/32678
                                                1⤵
                                                • Executes dropped EXE
                                                PID:730
                                                • /bin/sleep
                                                  sleep 60
                                                  2⤵
                                                    PID:740
                                                  • /etc/id.services.conf
                                                    /etc/id.services.conf
                                                    2⤵
                                                    • Executes dropped EXE
                                                    • Enumerates kernel/hardware configuration
                                                    PID:794
                                                    • /usr/bin/pkill
                                                      pkill -9 32678
                                                      3⤵
                                                      • Reads CPU attributes
                                                      • Reads runtime system information
                                                      PID:798
                                                    • /bin/sh
                                                      sh -c "/etc/32678&"
                                                      3⤵
                                                        PID:799
                                                      • /usr/sbin/service
                                                        service crond start
                                                        3⤵
                                                          PID:800
                                                          • /usr/bin/basename
                                                            basename /usr/sbin/service
                                                            4⤵
                                                              PID:806
                                                            • /usr/bin/basename
                                                              basename /usr/sbin/service
                                                              4⤵
                                                                PID:808
                                                              • /bin/systemctl
                                                                systemctl --quiet is-active multi-user.target
                                                                4⤵
                                                                • Enumerates kernel/hardware configuration
                                                                PID:809
                                                              • /bin/sed
                                                                sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                                                                4⤵
                                                                  PID:812
                                                                • /bin/systemctl
                                                                  systemctl list-unit-files --full "--type=socket"
                                                                  4⤵
                                                                  • Enumerates kernel/hardware configuration
                                                                  PID:811
                                                              • /etc/id.services.conf
                                                                /etc/id.services.conf " "
                                                                3⤵
                                                                • Executes dropped EXE
                                                                • Enumerates kernel/hardware configuration
                                                                PID:801
                                                          • /usr/local/sbin/systemctl
                                                            systemctl start crond.service
                                                            1⤵
                                                              PID:725
                                                            • /usr/local/bin/systemctl
                                                              systemctl start crond.service
                                                              1⤵
                                                                PID:725
                                                              • /usr/sbin/systemctl
                                                                systemctl start crond.service
                                                                1⤵
                                                                  PID:725
                                                                • /usr/bin/systemctl
                                                                  systemctl start crond.service
                                                                  1⤵
                                                                    PID:725
                                                                  • /sbin/systemctl
                                                                    systemctl start crond.service
                                                                    1⤵
                                                                      PID:725
                                                                    • /bin/systemctl
                                                                      systemctl start crond.service
                                                                      1⤵
                                                                      • Enumerates kernel/hardware configuration
                                                                      • Reads runtime system information
                                                                      PID:725
                                                                    • /etc/32678
                                                                      /etc/32678
                                                                      1⤵
                                                                      • Executes dropped EXE
                                                                      PID:802
                                                                      • /bin/sleep
                                                                        sleep 60
                                                                        2⤵
                                                                          PID:807
                                                                      • /usr/local/sbin/systemctl
                                                                        systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                        1⤵
                                                                          PID:800
                                                                        • /usr/local/bin/systemctl
                                                                          systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                          1⤵
                                                                            PID:800
                                                                          • /usr/sbin/systemctl
                                                                            systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                            1⤵
                                                                              PID:800
                                                                            • /usr/bin/systemctl
                                                                              systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                              1⤵
                                                                                PID:800
                                                                              • /sbin/systemctl
                                                                                systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                                1⤵
                                                                                  PID:800
                                                                                • /bin/systemctl
                                                                                  systemctl "--job-mode=ignore-dependencies" start crond.service
                                                                                  1⤵
                                                                                  • Enumerates kernel/hardware configuration
                                                                                  • Reads runtime system information
                                                                                  PID:800

                                                                                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

                                                                                  ad1e0eac7b5a21d48787c13116526ff6

                                                                                  SHA1

                                                                                  cdd1a9a416f8c6ffa4dc70638990376695fafbf0

                                                                                  SHA256

                                                                                  2ea79246ca36e0bfd5c1968d4344d2b74e3c230be19867732968d63577084f06

                                                                                  SHA512

                                                                                  e32c24f20f66e2945eff0fbe0dc17bf9850a22455b4d4f272008cc40587ec57995c53e6ce7c046271c4c33faf5e424d53676590ad5e21d22061c39ba48dd6c4c

                                                                                • /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