Analysis

  • max time kernel
    11949s
  • max time network
    126s
  • platform
    linux_amd64
  • resource
    ubuntu1804-amd64-en-20211208
  • submitted
    25-04-2022 23:53

General

  • Target

    pty4

  • Size

    90KB

  • MD5

    60f50372901a3ab6be093cb9922fd75c

  • SHA1

    03fabbbc736a5c59b889e3675331c96263d4a4a6

  • SHA256

    16b4093813e2923e9ee70b888f0d50f972ac607253b00f25e4be44993d263bd2

  • SHA512

    480ce401e171d29483b5ddf2b732f8959daba11c8b25538d179cc93795594676aaec3ae078cd312743a9cecf78ba533a58ced339fa63e2b5e53b9077933d0e6b

Score
10/10

Malware Config

Signatures

  • suricata: ET MALWARE ELF/Muhstik Botnet CnC Activity

    suricata: ET MALWARE ELF/Muhstik Botnet CnC Activity

  • Reads runtime system information 4 IoCs

    Reads data from /proc virtual filesystem.

  • Writes file to tmp directory 4 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • ./pty4
    ./pty4
    1⤵
      PID:580
    • /bin/sh
      sh -c "pidof -x strace > /dev/null"
      1⤵
        PID:581
        • /bin/pidof
          pidof -x strace
          2⤵
            PID:582
        • /bin/sh
          sh -c "pidof -x tcpdump > /dev/null"
          1⤵
            PID:583
            • /bin/pidof
              pidof -x tcpdump
              2⤵
                PID:584
            • /bin/sh
              sh -c "cat /etc/inittab | grep -v \"/tmp/pty4\" > /etc/inittab2"
              1⤵
                PID:587
                • /bin/cat
                  cat /etc/inittab
                  2⤵
                    PID:590
                  • /bin/grep
                    grep -v /tmp/pty4
                    2⤵
                      PID:593
                  • /bin/sh
                    sh -c "crontab -l | grep /tmp/pty4 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /tmp/pty4 > /dev/null 2>&1 &\") | crontab -"
                    1⤵
                      PID:588
                      • /usr/bin/crontab
                        crontab -l
                        2⤵
                          PID:591
                        • /bin/grep
                          grep /tmp/pty4
                          2⤵
                            PID:594
                          • /bin/grep
                            grep -v "no cron"
                            2⤵
                              PID:595
                            • /usr/bin/crontab
                              crontab -
                              2⤵
                                PID:599
                            • /bin/sh
                              sh -c "crontab -r"
                              1⤵
                                PID:589
                                • /usr/bin/crontab
                                  crontab -r
                                  2⤵
                                    PID:592
                                • /bin/sh
                                  sh -c "echo \"0:2345:respawn:/tmp/pty4\" >> /etc/inittab2"
                                  1⤵
                                    PID:596
                                  • /bin/sh
                                    sh -c "cat /etc/inittab2 > /etc/inittab"
                                    1⤵
                                      PID:597
                                      • /bin/cat
                                        cat /etc/inittab2
                                        2⤵
                                          PID:600
                                      • /usr/bin/crontab
                                        crontab -l
                                        1⤵
                                          PID:601
                                        • /bin/sh
                                          sh -c "rm -rf /etc/inittab2"
                                          1⤵
                                            PID:602
                                            • /bin/rm
                                              rm -rf /etc/inittab2
                                              2⤵
                                                PID:603
                                            • /bin/sh
                                              sh -c "touch -acmr /bin/ls /etc/inittab"
                                              1⤵
                                                PID:604
                                                • /usr/bin/touch
                                                  touch -acmr /bin/ls /etc/inittab
                                                  2⤵
                                                    PID:605
                                                • /bin/sh
                                                  sh -c "/bin/uname -n"
                                                  1⤵
                                                    PID:609
                                                    • /bin/uname
                                                      /bin/uname -n
                                                      2⤵
                                                        PID:614
                                                    • /bin/sh
                                                      sh -c "cp -f /tmp/pty4 /dev/shm/pty4"
                                                      1⤵
                                                        PID:610
                                                        • /bin/cp
                                                          cp -f /tmp/pty4 /dev/shm/pty4
                                                          2⤵
                                                          • Reads runtime system information
                                                          • Writes file to tmp directory
                                                          PID:615
                                                      • /bin/sh
                                                        sh -c "cat /etc/inittab | grep -v \"/dev/shm/pty4\" > /etc/inittab2"
                                                        1⤵
                                                          PID:617
                                                          • /bin/cat
                                                            cat /etc/inittab
                                                            2⤵
                                                              PID:619
                                                            • /bin/grep
                                                              grep -v /dev/shm/pty4
                                                              2⤵
                                                                PID:622
                                                            • /bin/sh
                                                              sh -c "crontab -l | grep /dev/shm/pty4 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /dev/shm/pty4 > /dev/null 2>&1 &\") | crontab -"
                                                              1⤵
                                                                PID:618
                                                                • /usr/bin/crontab
                                                                  crontab -l
                                                                  2⤵
                                                                    PID:620
                                                                  • /bin/grep
                                                                    grep /dev/shm/pty4
                                                                    2⤵
                                                                      PID:621
                                                                    • /bin/grep
                                                                      grep -v "no cron"
                                                                      2⤵
                                                                        PID:623
                                                                      • /usr/bin/crontab
                                                                        crontab -
                                                                        2⤵
                                                                          PID:626
                                                                      • /bin/sh
                                                                        sh -c "echo \"0:2345:respawn:/dev/shm/pty4\" >> /etc/inittab2"
                                                                        1⤵
                                                                          PID:624
                                                                        • /bin/sh
                                                                          sh -c "cat /etc/inittab2 > /etc/inittab"
                                                                          1⤵
                                                                            PID:627
                                                                            • /bin/cat
                                                                              cat /etc/inittab2
                                                                              2⤵
                                                                                PID:629
                                                                            • /usr/bin/crontab
                                                                              crontab -l
                                                                              1⤵
                                                                                PID:628
                                                                              • /bin/sh
                                                                                sh -c "rm -rf /etc/inittab2"
                                                                                1⤵
                                                                                  PID:630
                                                                                  • /bin/rm
                                                                                    rm -rf /etc/inittab2
                                                                                    2⤵
                                                                                      PID:631
                                                                                  • /bin/sh
                                                                                    sh -c "touch -acmr /bin/ls /etc/inittab"
                                                                                    1⤵
                                                                                      PID:632
                                                                                      • /usr/bin/touch
                                                                                        touch -acmr /bin/ls /etc/inittab
                                                                                        2⤵
                                                                                          PID:633
                                                                                      • /bin/sh
                                                                                        sh -c "cp -f /tmp/pty4 /var/tmp/pty4"
                                                                                        1⤵
                                                                                          PID:634
                                                                                          • /bin/cp
                                                                                            cp -f /tmp/pty4 /var/tmp/pty4
                                                                                            2⤵
                                                                                            • Reads runtime system information
                                                                                            • Writes file to tmp directory
                                                                                            PID:635
                                                                                        • /bin/sh
                                                                                          sh -c "cat /etc/inittab | grep -v \"/var/tmp/pty4\" > /etc/inittab2"
                                                                                          1⤵
                                                                                            PID:637
                                                                                            • /bin/cat
                                                                                              cat /etc/inittab
                                                                                              2⤵
                                                                                                PID:639
                                                                                              • /bin/grep
                                                                                                grep -v /var/tmp/pty4
                                                                                                2⤵
                                                                                                  PID:640
                                                                                              • /bin/sh
                                                                                                sh -c "crontab -l | grep /var/tmp/pty4 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /var/tmp/pty4 > /dev/null 2>&1 &\") | crontab -"
                                                                                                1⤵
                                                                                                  PID:638
                                                                                                  • /usr/bin/crontab
                                                                                                    crontab -l
                                                                                                    2⤵
                                                                                                      PID:641
                                                                                                    • /bin/grep
                                                                                                      grep /var/tmp/pty4
                                                                                                      2⤵
                                                                                                        PID:642
                                                                                                      • /bin/grep
                                                                                                        grep -v "no cron"
                                                                                                        2⤵
                                                                                                          PID:643
                                                                                                        • /usr/bin/crontab
                                                                                                          crontab -
                                                                                                          2⤵
                                                                                                            PID:645
                                                                                                        • /usr/bin/crontab
                                                                                                          crontab -l
                                                                                                          1⤵
                                                                                                            PID:646
                                                                                                          • /bin/sh
                                                                                                            sh -c "echo \"0:2345:respawn:/var/tmp/pty4\" >> /etc/inittab2"
                                                                                                            1⤵
                                                                                                              PID:647
                                                                                                            • /bin/sh
                                                                                                              sh -c "cat /etc/inittab2 > /etc/inittab"
                                                                                                              1⤵
                                                                                                                PID:648
                                                                                                                • /bin/cat
                                                                                                                  cat /etc/inittab2
                                                                                                                  2⤵
                                                                                                                    PID:649
                                                                                                                • /bin/sh
                                                                                                                  sh -c "rm -rf /etc/inittab2"
                                                                                                                  1⤵
                                                                                                                    PID:650
                                                                                                                    • /bin/rm
                                                                                                                      rm -rf /etc/inittab2
                                                                                                                      2⤵
                                                                                                                        PID:651
                                                                                                                    • /bin/sh
                                                                                                                      sh -c "touch -acmr /bin/ls /etc/inittab"
                                                                                                                      1⤵
                                                                                                                        PID:652
                                                                                                                        • /usr/bin/touch
                                                                                                                          touch -acmr /bin/ls /etc/inittab
                                                                                                                          2⤵
                                                                                                                            PID:653
                                                                                                                        • /bin/sh
                                                                                                                          sh -c "cp -f /tmp/pty4 /var/lock/pty4"
                                                                                                                          1⤵
                                                                                                                            PID:654
                                                                                                                            • /bin/cp
                                                                                                                              cp -f /tmp/pty4 /var/lock/pty4
                                                                                                                              2⤵
                                                                                                                              • Reads runtime system information
                                                                                                                              • Writes file to tmp directory
                                                                                                                              PID:655
                                                                                                                          • /bin/sh
                                                                                                                            sh -c "cat /etc/inittab | grep -v \"/var/lock/pty4\" > /etc/inittab2"
                                                                                                                            1⤵
                                                                                                                              PID:657
                                                                                                                              • /bin/cat
                                                                                                                                cat /etc/inittab
                                                                                                                                2⤵
                                                                                                                                  PID:659
                                                                                                                                • /bin/grep
                                                                                                                                  grep -v /var/lock/pty4
                                                                                                                                  2⤵
                                                                                                                                    PID:661
                                                                                                                                • /bin/sh
                                                                                                                                  sh -c "crontab -l | grep /var/lock/pty4 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /var/lock/pty4 > /dev/null 2>&1 &\") | crontab -"
                                                                                                                                  1⤵
                                                                                                                                    PID:658
                                                                                                                                    • /usr/bin/crontab
                                                                                                                                      crontab -l
                                                                                                                                      2⤵
                                                                                                                                        PID:660
                                                                                                                                      • /bin/grep
                                                                                                                                        grep /var/lock/pty4
                                                                                                                                        2⤵
                                                                                                                                          PID:662
                                                                                                                                        • /bin/grep
                                                                                                                                          grep -v "no cron"
                                                                                                                                          2⤵
                                                                                                                                            PID:664
                                                                                                                                          • /usr/bin/crontab
                                                                                                                                            crontab -
                                                                                                                                            2⤵
                                                                                                                                              PID:668
                                                                                                                                          • /bin/sh
                                                                                                                                            sh -c "echo \"0:2345:respawn:/var/lock/pty4\" >> /etc/inittab2"
                                                                                                                                            1⤵
                                                                                                                                              PID:663
                                                                                                                                            • /bin/sh
                                                                                                                                              sh -c "cat /etc/inittab2 > /etc/inittab"
                                                                                                                                              1⤵
                                                                                                                                                PID:665
                                                                                                                                                • /bin/cat
                                                                                                                                                  cat /etc/inittab2
                                                                                                                                                  2⤵
                                                                                                                                                    PID:666
                                                                                                                                                • /usr/bin/crontab
                                                                                                                                                  crontab -l
                                                                                                                                                  1⤵
                                                                                                                                                    PID:669
                                                                                                                                                  • /bin/sh
                                                                                                                                                    sh -c "rm -rf /etc/inittab2"
                                                                                                                                                    1⤵
                                                                                                                                                      PID:670
                                                                                                                                                      • /bin/rm
                                                                                                                                                        rm -rf /etc/inittab2
                                                                                                                                                        2⤵
                                                                                                                                                          PID:671
                                                                                                                                                      • /bin/sh
                                                                                                                                                        sh -c "touch -acmr /bin/ls /etc/inittab"
                                                                                                                                                        1⤵
                                                                                                                                                          PID:672
                                                                                                                                                          • /usr/bin/touch
                                                                                                                                                            touch -acmr /bin/ls /etc/inittab
                                                                                                                                                            2⤵
                                                                                                                                                              PID:673
                                                                                                                                                          • /bin/sh
                                                                                                                                                            sh -c "cp -f /tmp/pty4 /var/run/pty4"
                                                                                                                                                            1⤵
                                                                                                                                                              PID:674
                                                                                                                                                              • /bin/cp
                                                                                                                                                                cp -f /tmp/pty4 /var/run/pty4
                                                                                                                                                                2⤵
                                                                                                                                                                • Reads runtime system information
                                                                                                                                                                • Writes file to tmp directory
                                                                                                                                                                PID:675
                                                                                                                                                            • /bin/sh
                                                                                                                                                              sh -c "cat /etc/inittab | grep -v \"/var/run/pty4\" > /etc/inittab2"
                                                                                                                                                              1⤵
                                                                                                                                                                PID:677
                                                                                                                                                                • /bin/cat
                                                                                                                                                                  cat /etc/inittab
                                                                                                                                                                  2⤵
                                                                                                                                                                    PID:679
                                                                                                                                                                  • /bin/grep
                                                                                                                                                                    grep -v /var/run/pty4
                                                                                                                                                                    2⤵
                                                                                                                                                                      PID:680
                                                                                                                                                                  • /bin/sh
                                                                                                                                                                    sh -c "crontab -l | grep /var/run/pty4 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /var/run/pty4 > /dev/null 2>&1 &\") | crontab -"
                                                                                                                                                                    1⤵
                                                                                                                                                                      PID:678
                                                                                                                                                                      • /usr/bin/crontab
                                                                                                                                                                        crontab -l
                                                                                                                                                                        2⤵
                                                                                                                                                                          PID:681
                                                                                                                                                                        • /bin/grep
                                                                                                                                                                          grep /var/run/pty4
                                                                                                                                                                          2⤵
                                                                                                                                                                            PID:682
                                                                                                                                                                          • /bin/grep
                                                                                                                                                                            grep -v "no cron"
                                                                                                                                                                            2⤵
                                                                                                                                                                              PID:685
                                                                                                                                                                            • /usr/bin/crontab
                                                                                                                                                                              crontab -
                                                                                                                                                                              2⤵
                                                                                                                                                                                PID:688
                                                                                                                                                                            • /bin/sh
                                                                                                                                                                              sh -c "echo \"0:2345:respawn:/var/run/pty4\" >> /etc/inittab2"
                                                                                                                                                                              1⤵
                                                                                                                                                                                PID:683
                                                                                                                                                                              • /bin/sh
                                                                                                                                                                                sh -c "cat /etc/inittab2 > /etc/inittab"
                                                                                                                                                                                1⤵
                                                                                                                                                                                  PID:684
                                                                                                                                                                                  • /bin/cat
                                                                                                                                                                                    cat /etc/inittab2
                                                                                                                                                                                    2⤵
                                                                                                                                                                                      PID:686
                                                                                                                                                                                  • /bin/sh
                                                                                                                                                                                    sh -c "rm -rf /etc/inittab2"
                                                                                                                                                                                    1⤵
                                                                                                                                                                                      PID:689
                                                                                                                                                                                      • /bin/rm
                                                                                                                                                                                        rm -rf /etc/inittab2
                                                                                                                                                                                        2⤵
                                                                                                                                                                                          PID:691
                                                                                                                                                                                      • /usr/bin/crontab
                                                                                                                                                                                        crontab -l
                                                                                                                                                                                        1⤵
                                                                                                                                                                                          PID:690
                                                                                                                                                                                        • /bin/sh
                                                                                                                                                                                          sh -c "touch -acmr /bin/ls /etc/inittab"
                                                                                                                                                                                          1⤵
                                                                                                                                                                                            PID:692
                                                                                                                                                                                            • /usr/bin/touch
                                                                                                                                                                                              touch -acmr /bin/ls /etc/inittab
                                                                                                                                                                                              2⤵
                                                                                                                                                                                                PID:693

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