Analysis

  • max time kernel
    0s
  • max time network
    47s
  • platform
    linux_amd64
  • resource
    ubuntu1804-amd64-en-20211208
  • submitted
    01-07-2022 04:18

General

  • Target

    8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28

  • Size

    611KB

  • MD5

    28b4c1d34913014f2ea43298db493216

  • SHA1

    113cb9d7f85f8d264f5a75ede41e275478841aac

  • SHA256

    8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28

  • SHA512

    634af7f9986942d1e81fef965ea7f068051f72f2102e4dce0861a2df3c983f3d0001b7b9eec7ee98f6110eeed24761145aebaac9b7a267a84975797c00391e1b

Score
9/10

Malware Config

Signatures

  • Writes file to system bin folder 1 TTPs 3 IoCs
  • Creates/modifies Cron job 1 TTPs 2 IoCs

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

  • Modifies rc script 1 TTPs 12 IoCs

    Adding/modifying system rc scripts is a common persistence mechanism.

  • Write file to user bin folder 1 TTPs 5 IoCs
  • Reads runtime system information 7 IoCs

    Reads data from /proc virtual filesystem.

  • Writes file to tmp directory 3 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • ./8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28
    ./8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28
    1⤵
      PID:571
    • /bin/sh
      sh -c "sed -i '/\\/etc\\/cron.hourly\\/gcc.sh/d' /etc/crontab && echo '*/3 * * * * root /etc/cron.hourly/gcc.sh' >> /etc/crontab"
      1⤵
      • Creates/modifies Cron job
      PID:577
      • /bin/sed
        sed -i "/\\/etc\\/cron.hourly\\/gcc.sh/d" /etc/crontab
        2⤵
        • Creates/modifies Cron job
        • Reads runtime system information
        PID:578
    • /bin/chkconfig
      chkconfig --add 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28
      1⤵
        PID:574
      • /sbin/chkconfig
        chkconfig --add 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28
        1⤵
          PID:574
        • /usr/bin/chkconfig
          chkconfig --add 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28
          1⤵
            PID:574
          • /usr/sbin/chkconfig
            chkconfig --add 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28
            1⤵
              PID:574
            • /usr/local/bin/chkconfig
              chkconfig --add 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28
              1⤵
                PID:574
              • /usr/local/sbin/chkconfig
                chkconfig --add 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28
                1⤵
                  PID:574
                • /usr/X11R6/bin/chkconfig
                  chkconfig --add 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28
                  1⤵
                    PID:574
                  • /bin/update-rc.d
                    update-rc.d 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 defaults
                    1⤵
                      PID:576
                    • /sbin/update-rc.d
                      update-rc.d 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 defaults
                      1⤵
                        PID:576
                      • /usr/bin/update-rc.d
                        update-rc.d 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 defaults
                        1⤵
                          PID:576
                        • /usr/sbin/update-rc.d
                          update-rc.d 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 defaults
                          1⤵
                          • Modifies rc script
                          • Write file to user bin folder
                          PID:576
                          • /bin/systemctl
                            systemctl daemon-reload
                            2⤵
                            • Reads runtime system information
                            PID:582
                        • /usr/bin/dtjnbafmgr
                          /usr/bin/dtjnbafmgr "sleep 1" 572
                          1⤵
                            PID:588
                          • /usr/bin/dtjnbafmgr
                            /usr/bin/dtjnbafmgr "netstat -an" 572
                            1⤵
                              PID:603
                            • /usr/bin/dtjnbafmgr
                              /usr/bin/dtjnbafmgr "netstat -an" 572
                              1⤵
                                PID:609
                              • /usr/bin/dtjnbafmgr
                                /usr/bin/dtjnbafmgr top 572
                                1⤵
                                  PID:612
                                • /usr/bin/dtjnbafmgr
                                  /usr/bin/dtjnbafmgr "ls -la" 572
                                  1⤵
                                    PID:615
                                  • /usr/bin/yaejippwll
                                    /usr/bin/yaejippwll "netstat -an" 572
                                    1⤵
                                      PID:618
                                    • /usr/bin/yaejippwll
                                      /usr/bin/yaejippwll "cat resolv.conf" 572
                                      1⤵
                                        PID:621
                                      • /usr/bin/yaejippwll
                                        /usr/bin/yaejippwll su 572
                                        1⤵
                                          PID:624
                                        • /usr/bin/yaejippwll
                                          /usr/bin/yaejippwll id 572
                                          1⤵
                                            PID:627
                                          • /usr/bin/yaejippwll
                                            /usr/bin/yaejippwll "netstat -an" 572
                                            1⤵
                                              PID:630
                                            • /usr/bin/znmnkvbkmy
                                              /usr/bin/znmnkvbkmy bash 572
                                              1⤵
                                                PID:633
                                              • /usr/bin/znmnkvbkmy
                                                /usr/bin/znmnkvbkmy "ls -la" 572
                                                1⤵
                                                  PID:636
                                                • /usr/bin/znmnkvbkmy
                                                  /usr/bin/znmnkvbkmy who 572
                                                  1⤵
                                                    PID:639
                                                  • /usr/bin/znmnkvbkmy
                                                    /usr/bin/znmnkvbkmy "echo \"find\"" 572
                                                    1⤵
                                                      PID:642
                                                    • /usr/bin/znmnkvbkmy
                                                      /usr/bin/znmnkvbkmy sh 572
                                                      1⤵
                                                        PID:645
                                                      • /usr/bin/mjwltztskq
                                                        /usr/bin/mjwltztskq "echo \"find\"" 572
                                                        1⤵
                                                          PID:648

                                                        Network

                                                        MITRE ATT&CK Enterprise v6

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