Analysis

  • max time kernel
    150s
  • max time network
    151s
  • 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
    03-11-2024 02:54

General

  • Target

    63bfb2501a4607933ba3bdbbdfeca57a80017215006877b52638fd8ad126788c.elf

  • Size

    2.2MB

  • MD5

    b5a8f29c137a214ffef83b0bc5daad97

  • SHA1

    90fc46188e7bc83a423a3ea8fe0392660f594eb0

  • SHA256

    63bfb2501a4607933ba3bdbbdfeca57a80017215006877b52638fd8ad126788c

  • SHA512

    ed372ee7f59c15b9dbf005f20d660223b23c04a0d3f660efdcfb9fc1bd9a0d5aca836befecc6a155104607883520f8da0ff911534dd330ade448f52c9d52e544

  • SSDEEP

    24576:cdz8hxtvZ8T0p+gpvRYvyVW1Z0+WJ/RVXbwqel9OFI+TcR:TFpW0gqelga+u

Malware Config

Signatures

  • Kaiji 1 IoCs

    Kaiji payload

  • Kaiji family
  • Executes dropped EXE 5 IoCs
  • Creates/modifies Cron job 1 TTPs 1 IoCs

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

  • Command and Scripting Interpreter: Unix Shell 1 TTPs 2 IoCs

    Execute scripts via Unix Shell.

  • Enumerates kernel/hardware configuration 1 TTPs 13 IoCs

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

  • Reads runtime system information 31 IoCs

    Reads data from /proc virtual filesystem.

Processes

  • /tmp/63bfb2501a4607933ba3bdbbdfeca57a80017215006877b52638fd8ad126788c.elf
    /tmp/63bfb2501a4607933ba3bdbbdfeca57a80017215006877b52638fd8ad126788c.elf
    1⤵
    • Enumerates kernel/hardware configuration
    PID:699
    • /tmp/63bfb2501a4607933ba3bdbbdfeca57a80017215006877b52638fd8ad126788c.elf
      /tmp/63bfb2501a4607933ba3bdbbdfeca57a80017215006877b52638fd8ad126788c.elf " "
      2⤵
      • Enumerates kernel/hardware configuration
      PID:705
      • /bin/sh
        /bin/sh -c "/etc/32676&"
        3⤵
        • Command and Scripting Interpreter: Unix Shell
        PID:715
      • /usr/sbin/service
        service crond start
        3⤵
          PID:717
          • /usr/bin/basename
            basename /usr/sbin/service
            4⤵
              PID:720
            • /usr/bin/basename
              basename /usr/sbin/service
              4⤵
                PID:722
              • /bin/systemctl
                systemctl --quiet is-active multi-user.target
                4⤵
                • Enumerates kernel/hardware configuration
                • Reads runtime system information
                PID:725
              • /bin/systemctl
                systemctl list-unit-files --full "--type=socket"
                4⤵
                • Enumerates kernel/hardware configuration
                • Reads runtime system information
                PID:728
              • /bin/sed
                sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                4⤵
                • Reads runtime system information
                PID:729
            • /usr/local/sbin/systemctl
              systemctl "--job-mode=ignore-dependencies" start crond.service
              3⤵
                PID:717
              • /usr/local/bin/systemctl
                systemctl "--job-mode=ignore-dependencies" start crond.service
                3⤵
                  PID:717
                • /usr/sbin/systemctl
                  systemctl "--job-mode=ignore-dependencies" start crond.service
                  3⤵
                    PID:717
                  • /usr/bin/systemctl
                    systemctl "--job-mode=ignore-dependencies" start crond.service
                    3⤵
                      PID:717
                    • /sbin/systemctl
                      systemctl "--job-mode=ignore-dependencies" start crond.service
                      3⤵
                        PID:717
                      • /bin/systemctl
                        systemctl "--job-mode=ignore-dependencies" start crond.service
                        3⤵
                        • Enumerates kernel/hardware configuration
                        • Reads runtime system information
                        PID:717
                      • /bin/sh
                        /bin/sh -c "echo \"*/1 * * * * root /.mod \" >> /etc/crontab"
                        3⤵
                        • Creates/modifies Cron job
                        • Command and Scripting Interpreter: Unix Shell
                        PID:740
                      • /usr/bin/renice
                        renice -20 705
                        3⤵
                          PID:746
                        • /bin/mount
                          mount -o bind /tmp/ /proc/705
                          3⤵
                          • Reads runtime system information
                          PID:747
                        • /usr/sbin/service
                          service cron start
                          3⤵
                            PID:748
                            • /usr/bin/basename
                              basename /usr/sbin/service
                              4⤵
                                PID:750
                              • /usr/bin/basename
                                basename /usr/sbin/service
                                4⤵
                                  PID:751
                                • /bin/systemctl
                                  systemctl --quiet is-active multi-user.target
                                  4⤵
                                  • Enumerates kernel/hardware configuration
                                  • Reads runtime system information
                                  PID:752
                                • /bin/systemctl
                                  systemctl list-unit-files --full "--type=socket"
                                  4⤵
                                  • Enumerates kernel/hardware configuration
                                  • Reads runtime system information
                                  PID:754
                                • /bin/sed
                                  sed -ne "s/\\.socket\\s*[a-z]*\\s*\$/.socket/p"
                                  4⤵
                                  • Reads runtime system information
                                  PID:755
                              • /usr/local/sbin/systemctl
                                systemctl "--job-mode=ignore-dependencies" start cron.service
                                3⤵
                                  PID:748
                                • /usr/local/bin/systemctl
                                  systemctl "--job-mode=ignore-dependencies" start cron.service
                                  3⤵
                                    PID:748
                                  • /usr/sbin/systemctl
                                    systemctl "--job-mode=ignore-dependencies" start cron.service
                                    3⤵
                                      PID:748
                                    • /usr/bin/systemctl
                                      systemctl "--job-mode=ignore-dependencies" start cron.service
                                      3⤵
                                        PID:748
                                      • /sbin/systemctl
                                        systemctl "--job-mode=ignore-dependencies" start cron.service
                                        3⤵
                                          PID:748
                                        • /bin/systemctl
                                          systemctl "--job-mode=ignore-dependencies" start cron.service
                                          3⤵
                                          • Enumerates kernel/hardware configuration
                                          • Reads runtime system information
                                          PID:748
                                        • /bin/systemctl
                                          systemctl start crond.service
                                          3⤵
                                          • Enumerates kernel/hardware configuration
                                          • Reads runtime system information
                                          PID:757
                                    • /etc/32676
                                      /etc/32676
                                      1⤵
                                      • Executes dropped EXE
                                      PID:716
                                      • /bin/sleep
                                        sleep 60
                                        2⤵
                                          PID:719
                                        • /etc/opt.services.cfg
                                          /etc/opt.services.cfg
                                          2⤵
                                          • Executes dropped EXE
                                          • Enumerates kernel/hardware configuration
                                          PID:856
                                          • /etc/opt.services.cfg
                                            /etc/opt.services.cfg " "
                                            3⤵
                                            • Executes dropped EXE
                                            • Enumerates kernel/hardware configuration
                                            PID:860
                                        • /bin/sleep
                                          sleep 60
                                          2⤵
                                            PID:861
                                          • /etc/opt.services.cfg
                                            /etc/opt.services.cfg
                                            2⤵
                                            • Executes dropped EXE
                                            • Enumerates kernel/hardware configuration
                                            PID:876
                                            • /etc/opt.services.cfg
                                              /etc/opt.services.cfg " "
                                              3⤵
                                              • Executes dropped EXE
                                              • Enumerates kernel/hardware configuration
                                              PID:880
                                          • /bin/sleep
                                            sleep 60
                                            2⤵
                                              PID:881

                                          Network

                                          MITRE ATT&CK Enterprise v15

                                          Replay Monitor

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                                          Downloads

                                          • /.mod

                                            Filesize

                                            34B

                                            MD5

                                            f5a3713282e43c200f30342f5ff5e2ea

                                            SHA1

                                            2b2ce1a207e2b691a074c6f78f71c4785aae426a

                                            SHA256

                                            6ab64e727571458d4884fb2fe82c27c467db0699cb8f648b3f0217c35d2b7511

                                            SHA512

                                            5bcb8cd360409147a486755f90e0cdd97183af02ce8de5135b7c6a8a010deb9ef12dcd5ee9a2a8fd2e159347f68e72d6b7fd75e943b4fcd928d7a74b97476013

                                          • /etc/.walk

                                            Filesize

                                            41B

                                            MD5

                                            ed61e5384b767dc9387c3297f7644c7a

                                            SHA1

                                            92aea3e1516267131884bd14d589da5d05945253

                                            SHA256

                                            0bacccbfb60e622d5eb13d01254515cea82c7d025aec7130feb4dbdf4e28540d

                                            SHA512

                                            0051e0d7b7b4134967e3fa6f1b28a25ba1fc7845016471c81f19292cd16e6c655b64800483bcb093e482b7ba17f0f3260a5f4d39311a46c0ead432a1c9a3d77d

                                          • /etc/.walk

                                            Filesize

                                            90B

                                            MD5

                                            99070834e5b06f5b564e2ece9d138d33

                                            SHA1

                                            1af1c8bee403a3e15a1090b75d39b639882dbcb4

                                            SHA256

                                            3979dfee18a2af9f72dcee49649a0520551c7a7284a8b86238d531c701f27bdf

                                            SHA512

                                            a931a8bf476905519b99771dac38dbba8985266a2247890ad6c2a5d073e907f4d37696933074a54429cc46f8eaac7acc426c26a03aaff27f114487696fbb5129

                                          • /etc/32676

                                            Filesize

                                            61B

                                            MD5

                                            47684525bfdf26f49fd1cf742b17c015

                                            SHA1

                                            c4ab14ba22420ff9acadfc698a38d0cd99e9fbfa

                                            SHA256

                                            b7ce294613dd2c237a4a50548bfcd5c14d166107f2d2e965499bc78695300d5b

                                            SHA512

                                            948f9c519ae9afe1c821c5d58da2e584e50356dabef597ccd408853a9038560b9fb1c5894900e2725b48977ffd49d18a439436bb4946e2164ac9fcf2a8637621

                                          • /etc/opt.services.cfg

                                            Filesize

                                            2.2MB

                                            MD5

                                            b5a8f29c137a214ffef83b0bc5daad97

                                            SHA1

                                            90fc46188e7bc83a423a3ea8fe0392660f594eb0

                                            SHA256

                                            63bfb2501a4607933ba3bdbbdfeca57a80017215006877b52638fd8ad126788c

                                            SHA512

                                            ed372ee7f59c15b9dbf005f20d660223b23c04a0d3f660efdcfb9fc1bd9a0d5aca836befecc6a155104607883520f8da0ff911534dd330ade448f52c9d52e544

                                          • /etc/profile.d/gateway.sh

                                            Filesize

                                            969B

                                            MD5

                                            7e6e661a9a61c00a6ae1f3fdb0232e03

                                            SHA1

                                            8ba350b8b60e5b01d7f067ad7304a6917d4dbe99

                                            SHA256

                                            5c25e54fc32f41d2e0e592446698e124baf148046cbb538df75b53434f05ddb2

                                            SHA512

                                            92828955cbb5f4020467479e27cd9a9caa8752e716c2872ec51d2bfadbf8ee4767abb6306b5b0a2cf04437911a8d8c4449287ab4a41ae30a276dbc09d19fc054

                                          • /usr/bin/include/find

                                            Filesize

                                            240KB

                                            MD5

                                            97b5c6c1b307114efc38193175a343c3

                                            SHA1

                                            24015d4f95c6878ea5027c134eddebb7126b610f

                                            SHA256

                                            b1a89f313023b476fc826d8fac689679504e61ae8e650681fb966e810ed34970

                                            SHA512

                                            e5359f3e082f54f5cfd7afa7771d8724d161d48d09372f203bdca222a47a63919fdfb76b6db7fb8ff61e92f8fd04fdec962e94331ff12705cf53ce5e23d33180