Analysis
- max time kernel
46s - 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
15/08/2026, 12:23
Behavioral task
behavioral1
Sample
pty4
Resource
ubuntu1804-amd64-20260513-en
10 signatures
150 seconds
General
- Target pty4
- Size 43KB
- Sample260815-pkgvfaw1cs
- SHA256 a2d67291d87fe8f4d6e92fdb45c0190fb372cdd2c83ccc9ab8fb81bf69c74588
- MD5 e5cf6b3e6673b0634ec077677c68470b
- SHA1 2341363ac91f243d2e3e038176d90b7a07d84aaa
- SHA512 f6d41744727bf1098053f8b88ae4952e2bb013dfc59c29f87a7567fb250cb5a333ecdeb1cabcf2367e6538e5a65df65e05e6677019f89fe0bde85eee9d84396c
- SSDEEP 768:4YIPplQHTtSQ4rNtFWQphfiHnt92uSYbnM0NzS8YcjuL07MQcQ8p5wGA1HmVXOj8:MiRSQKzMQr6b2bYMqocKL2MQc3p5wGA+
- TLSH T12F130106A51F87E9DA056C7E1B932CB98354FC214C622B9F377576CA35B35740B3AC88
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Detects Kaiten/Tsunami Payload 1 IoCs
resource yara_rule behavioral1/memory/1492-1-0x0000000008048000-0x00000000080617c4-memory.dmp family_kaiten_v3 - Creates/modifies Cron job 1 TTPs 5 IoCs
Cron allows running tasks on a schedule, and is commonly used for malware persistence.
description ioc Process File opened for modification /var/spool/cron/crontabs/tmp.U1ShTd crontab File opened for modification /var/spool/cron/crontabs/tmp.wTbMFj crontab File opened for modification /var/spool/cron/crontabs/tmp.8K8fno crontab File opened for modification /var/spool/cron/crontabs/tmp.ozYfKp crontab File opened for modification /var/spool/cron/crontabs/tmp.wfb6w9 crontab - 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.
pid Process 1549 sh 1569 sh 1570 touch 1589 sh 1590 touch 1610 touch 1523 sh 1524 touch 1550 touch 1609 sh -
resource yara_rule behavioral1/files/fstream-8.dat upx - Changes its process name 1 IoCs
description pid Process Changes the process name, possibly in an attempt to hide itself 1492 pty4 -
description ioc Process File opened for reading /proc/12/stat pidof File opened for reading /proc/503/cmdline pidof File opened for reading /proc/991/cmdline pidof File opened for reading /proc/1052/stat pidof File opened for reading /proc/1497/stat pidof File opened for reading /proc/28/stat pidof File opened for reading /proc/14/stat pidof File opened for reading /proc/176/stat pidof File opened for reading /proc/1039/cmdline pidof File opened for reading /proc/1094/stat pidof File opened for reading /proc/1151/cmdline pidof File opened for reading /proc/1023/stat pidof File opened for reading /proc/1492/stat pidof File opened for reading /proc/13/cmdline pidof File opened for reading /proc/639/stat pidof File opened for reading /proc/670/stat pidof File opened for reading /proc/712/stat pidof File opened for reading /proc/723/cmdline pidof File opened for reading /proc/907/cmdline pidof File opened for reading /proc/949/cmdline pidof File opened for reading /proc/79/cmdline pidof File opened for reading /proc/503/cmdline pidof File opened for reading /proc/509/cmdline pidof File opened for reading /proc/22/cmdline pidof File opened for reading /proc/159/cmdline pidof File opened for reading /proc/6/stat pidof File opened for reading /proc/89/stat pidof File opened for reading /proc/161/stat pidof File opened for reading /proc/13/stat pidof File opened for reading /proc/458/stat pidof File opened for reading /proc/1381/stat pidof File opened for reading /proc/98/stat pidof File opened for reading /proc/1031/cmdline pidof File opened for reading /proc/910/stat pidof File opened for reading /proc/924/stat pidof File opened for reading /proc/1381/stat pidof File opened for reading /proc/35/cmdline pidof File opened for reading /proc/167/stat pidof File opened for reading /proc/18/cmdline pidof File opened for reading /proc/25/cmdline pidof File opened for reading /proc/468/cmdline pidof File opened for reading /proc/1327/stat pidof File opened for reading /proc/17/cmdline pidof File opened for reading /proc/78/stat pidof File opened for reading /proc/137/stat pidof File opened for reading /proc/1176/stat pidof File opened for reading /proc/1195/stat pidof File opened for reading /proc/15/cmdline pidof File opened for reading /proc/172/stat pidof File opened for reading /proc/160/stat pidof File opened for reading /proc/173/cmdline pidof File opened for reading /proc/1089/cmdline pidof File opened for reading /proc/1489/stat pidof File opened for reading /proc/1498/stat pidof File opened for reading /proc/filesystems cp File opened for reading /proc/13/stat pidof File opened for reading /proc/23/cmdline pidof File opened for reading /proc/24/stat pidof File opened for reading /proc/421/stat pidof File opened for reading /proc/1068/stat pidof File opened for reading /proc/1077/stat pidof File opened for reading /proc/528/cmdline pidof File opened for reading /proc/1069/cmdline pidof File opened for reading /proc/32/cmdline pidof - Writes file to shm directory 1 IoCs
Malware can drop malicious files in the shm directory which will run directly from RAM.
description ioc Process File opened for modification /dev/shm/pty4 cp - Writes file to tmp directory 1 IoCs
Malware often drops required files in the /tmp directory.
description ioc Process File opened for modification /tmp/.bawtz pty4
Processes
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/tmp/pty4/tmp/pty41⤵
- Changes its process name
- Writes file to tmp directory
PID:1492 -
/bin/shsh -c "pidof -x strace > /dev/null"2⤵PID:1493
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/bin/pidofpidof -x strace3⤵
- Reads runtime system information
PID:1494
-
-
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/bin/shsh -c "pidof -x tcpdump > /dev/null"2⤵PID:1497
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/bin/pidofpidof -x tcpdump3⤵
- Reads runtime system information
PID:1498
-
-
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/bin/shsh -c "cat /etc/inittab | grep -v \"/tmp/pty4\" > /etc/inittab2"2⤵PID:1501
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/bin/catcat /etc/inittab3⤵PID:1502
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/bin/grepgrep -v /tmp/pty43⤵PID:1505
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-
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/bin/shsh -c "crontab -l | grep /tmp/pty4 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /tmp/pty4 > /dev/null 2>&1 &\") | crontab -"2⤵PID:1503
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/bin/grepgrep -v "no cron"3⤵PID:1509
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/usr/bin/crontabcrontab -l3⤵PID:1506
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/bin/grepgrep /tmp/pty43⤵PID:1507
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1514
-
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/usr/bin/crontabcrontab -l3⤵PID:1519
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-
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/bin/shsh -c "crontab -r"2⤵PID:1504
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/usr/bin/crontabcrontab -r3⤵PID:1508
-
-
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/bin/shsh -c "echo \"0:2345:respawn:/tmp/pty4\" >> /etc/inittab2"2⤵PID:1510
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1515
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/bin/catcat /etc/inittab23⤵PID:1520
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-
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1521
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/bin/rmrm -rf /etc/inittab23⤵PID:1522
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-
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1523 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1524
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-
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/bin/shsh -c "/bin/uname -n"2⤵PID:1528
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/bin/uname/bin/uname -n3⤵PID:1530
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/bin/shsh -c "cp -f /tmp/pty4 /dev/shm/pty4"2⤵PID:1529
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/bin/cpcp -f /tmp/pty4 /dev/shm/pty43⤵
- Writes file to shm directory
PID:1531
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-
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/bin/shsh -c "cat /etc/inittab | grep -v \"/dev/shm/pty4\" > /etc/inittab2"2⤵PID:1533
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/bin/grepgrep -v /dev/shm/pty43⤵PID:1536
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/bin/catcat /etc/inittab3⤵PID:1535
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-
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/bin/shsh -c "crontab -l | grep /dev/shm/pty4 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /dev/shm/pty4 > /dev/null 2>&1 &\") | crontab -"2⤵PID:1534
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/bin/grepgrep -v "no cron"3⤵PID:1539
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/usr/bin/crontabcrontab -l3⤵PID:1537
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/bin/grepgrep /dev/shm/pty43⤵PID:1538
-
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1544
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/usr/bin/crontabcrontab -l3⤵PID:1546
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-
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/bin/shsh -c "echo \"0:2345:respawn:/dev/shm/pty4\" >> /etc/inittab2"2⤵PID:1541
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1542
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/bin/catcat /etc/inittab23⤵PID:1545
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-
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1547
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/bin/rmrm -rf /etc/inittab23⤵PID:1548
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-
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1549 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1550
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-
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/bin/shsh -c "cp -f /tmp/pty4 /var/tmp/pty4"2⤵PID:1551
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/bin/cpcp -f /tmp/pty4 /var/tmp/pty43⤵PID:1552
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/tmp/pty4\" > /etc/inittab2"2⤵PID:1554
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/bin/grepgrep -v /var/tmp/pty43⤵PID:1557
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/bin/catcat /etc/inittab3⤵PID:1556
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-
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/bin/shsh -c "crontab -l | grep /var/tmp/pty4 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /var/tmp/pty4 > /dev/null 2>&1 &\") | crontab -"2⤵PID:1555
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/usr/bin/crontabcrontab -l3⤵PID:1558
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/bin/grepgrep /var/tmp/pty43⤵PID:1559
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/bin/grepgrep -v "no cron"3⤵PID:1560
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1564
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/usr/bin/crontabcrontab -l3⤵PID:1566
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/bin/shsh -c "echo \"0:2345:respawn:/var/tmp/pty4\" >> /etc/inittab2"2⤵PID:1561
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1562
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/bin/catcat /etc/inittab23⤵PID:1565
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-
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1567
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/bin/rmrm -rf /etc/inittab23⤵PID:1568
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1569 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1570
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-
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/bin/shsh -c "cp -f /tmp/pty4 /var/lock/pty4"2⤵PID:1571
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/bin/cpcp -f /tmp/pty4 /var/lock/pty43⤵
- Reads runtime system information
PID:1572
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/lock/pty4\" > /etc/inittab2"2⤵PID:1574
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/bin/grepgrep -v /var/lock/pty43⤵PID:1577
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/bin/catcat /etc/inittab3⤵PID:1576
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/bin/shsh -c "crontab -l | grep /var/lock/pty4 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /var/lock/pty4 > /dev/null 2>&1 &\") | crontab -"2⤵PID:1575
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/bin/grepgrep -v "no cron"3⤵PID:1580
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/usr/bin/crontabcrontab -l3⤵PID:1578
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/bin/grepgrep /var/lock/pty43⤵PID:1579
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1584
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/usr/bin/crontabcrontab -l3⤵PID:1586
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/bin/shsh -c "echo \"0:2345:respawn:/var/lock/pty4\" >> /etc/inittab2"2⤵PID:1581
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1582
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/bin/catcat /etc/inittab23⤵PID:1585
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1587
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/bin/rmrm -rf /etc/inittab23⤵PID:1588
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-
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1589 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1590
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/bin/shsh -c "cp -f /tmp/pty4 /var/run/pty4"2⤵PID:1591
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/bin/cpcp -f /tmp/pty4 /var/run/pty43⤵PID:1592
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/run/pty4\" > /etc/inittab2"2⤵PID:1594
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/bin/grepgrep -v /var/run/pty43⤵PID:1596
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/bin/catcat /etc/inittab3⤵PID:1595
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/bin/shsh -c "crontab -l | grep /var/run/pty4 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /var/run/pty4 > /dev/null 2>&1 &\") | crontab -"2⤵PID:1597
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/bin/grepgrep /var/run/pty43⤵PID:1599
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/usr/bin/crontabcrontab -l3⤵PID:1598
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/bin/grepgrep -v "no cron"3⤵PID:1600
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1604
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/usr/bin/crontabcrontab -l3⤵PID:1606
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/bin/shsh -c "echo \"0:2345:respawn:/var/run/pty4\" >> /etc/inittab2"2⤵PID:1601
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1602
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/bin/catcat /etc/inittab23⤵PID:1605
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1607
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/bin/rmrm -rf /etc/inittab23⤵PID:1608
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1609 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1610
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path /dev/shm/pty4
- Size 43KB
- SHA256 a2d67291d87fe8f4d6e92fdb45c0190fb372cdd2c83ccc9ab8fb81bf69c74588
- MD5 e5cf6b3e6673b0634ec077677c68470b
- SHA1 2341363ac91f243d2e3e038176d90b7a07d84aaa
- SHA512 f6d41744727bf1098053f8b88ae4952e2bb013dfc59c29f87a7567fb250cb5a333ecdeb1cabcf2367e6538e5a65df65e05e6677019f89fe0bde85eee9d84396c
- SSDEEP 768:4YIPplQHTtSQ4rNtFWQphfiHnt92uSYbnM0NzS8YcjuL07MQcQ8p5wGA1HmVXOj8:MiRSQKzMQr6b2bYMqocKL2MQc3p5wGA+
- TLSH T12F130106A51F87E9DA056C7E1B932CB98354FC214C622B9F377576CA35B35740B3AC88
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path /etc/inittab
- Size 83B
- SHA256 7fbf43311d4796b4039c1b4336eee7ca6552be98203d1858d14cb6e37ea877e5
- MD5 c3df7eba718ab5494124e12efd721afb
- SHA1 1b42fd91a51a3a6a2a3e2baec1cd8abadd2c631f
- SHA512 f424c4d2d6f53c5c2ef64db057b52803146a17cf5492728709ecb7f2b07b8349890d8be3a689aeb68cd64333c1b527a8a39943b119a57e07c4ea97af76f1787f
- TLSH T103A00103F0712D9EA1F0A1A81B140202A2439700DE876B18C6433F72E20AF2AAD75026
- MD5 SHA1 SHA512 TLSH
- Path /etc/inittab
- Size 113B
- SHA256 7afb3d064700bcb2fec3b727de8e99eb2afebb919d4222ad3a92936b0ed714ae
- MD5 3eb623e3ff1934c48a37ba1dd32cebaf
- SHA1 42cad0982531e126bcf501cc46b41e590c5cc7fc
- SHA512 f3fc2e0504562090b2f9f42d8b90bfa074734dc9c2048e27e0f4e103dabca99a2abf471b2d61ec35001d03ce4b796a8cd140f20f74d35c83a52819dfececac3c
- TLSH T162B00207F4711DAEA1F4A5A81F540216A2435700DD476B18C5477F72E20AF2A6D75166
- MD5 SHA1 SHA512 TLSH
- Path /etc/inittab2
- Size 54B
- SHA256 031e3a9a99c03a49fea757df0d3ff52fc5dbcc07d37f2674efe21cae6529c370
- MD5 c61fe27473535c7ac532d70ed8182832
- SHA1 d5f3a809df3470eae8dd773da6727c33b46bf1dc
- SHA512 6d2e16886c925795851c4bde0aca83ef7618530756f83efda7f3102970b80d5ad300454ec2473b822c6cc058a57b63d2dd79d5d0a88852ecc184a1182ea6b3a8
- TLSH T160900203F0501D0DA1B0A0980B000201A2035700DD871B1881432E72E20AF2A6D74002
- MD5 SHA1 SHA512 TLSH
- Path /etc/inittab2
- Size 142B
- SHA256 53aca2a49a912146645bbb47d0abb1827520434abb907cadf77bc55b2572b099
- MD5 bd60346a01f1b4bde9993a6baa8183a2
- SHA1 ec6a317ad472790b18d0b662ac6992e226041c3e
- SHA512 c960e7d898096547cecee2376226203f2ef9ae88185b6ad52a4ecac742aa60c1ea699fc167a86201b9bc0102f029acc296c8a7bcd4e9f5793d5310cdb4faa098
- TLSH T1D6C04C03F0311CAEA4F061E80F180202A2434300DD436B08C5073F72E20AF2A6C70026
- MD5 SHA1 SHA512 TLSH
- Path /etc/inittab2
- Size 25B
- SHA256 a1a915c2d2d8b0997cea0c5885f31609e34ba6f5e9761f7a1fe5c292ae743dea
- MD5 6b150c167c13fb201746d5c31cb071c6
- SHA1 529600487af6ceb1f6686fea21eb40fd722ee626
- SHA512 4b62ff9c05083a4a7f603308e3c673b031eeb4813c26fd5dc130e377609558a8c07818657f96b38f7eaa2fc0a0915b90865620f230a056dc4ec8bb87ee4a9213
- MD5 SHA1 SHA512
- Path /var/spool/cron/crontabs/tmp.8K8fno
- Size 344B
- SHA256 5d19a4828c9d38b61e09066963b7219bef2916d85ef1124c9c46f002b24b0578
- MD5 83f77f6ee992d0d5cc64f3112a458a83
- SHA1 a154fc0990bdd21d17939eeab5fba94afc022904
- SHA512 2b94e2c8c0ab3d4777a4805df264813f45f78613264e01fbd88ec8ad361dd034d54d3a5a9a1552b94a7f7264dd3744570ec96af629cacd3e9a14fb934d26e8c8
- TLSH T1FBE08638B7711CE539894F781A9F61986BC3B939442D6E91F1DE5430914E34BE640A70
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.U1ShTd
- Size 257B
- SHA256 ad1955059e9e780d720c5046759ceb89087872368b8d4eeba9ab779451db71dc
- MD5 8a952fc3b425ff275433906e727cede9
- SHA1 916cc0a7f200dda0accc0446e82a39f04a551044
- SHA512 9ea019c74cd60be43639352ba53f06b364a56aefa38b056bbd7c8b0e33ed24839ee2a54fc83b6ac767643b62d36fc07acf0a78832b1e2c691dd330d2fcf02c9d
- TLSH T1B5D05E39BB706CB039154B38169B25596B83B97D841D6EA1F1DE0424824E74BA750961
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.ozYfKp
- Size 387B
- SHA256 75f93f16305a21c57969f6803f98ed24c480a81b3a4547fa43c5d5ff6e0e9571
- MD5 e2ce50c0d57bd326e7a2001685a7bac9
- SHA1 4f67b9e16f9917471f20df11d0d326c9cb126396
- SHA512 591c909da0379aad393745d356333ebda018b0449ee88e405355cce52b8fd5a2ef5cbb5ede11993f676510db124a170d947f32b5c89676b0cf28fab7edba697f
- TLSH T16FE0D834B7711CE53C894F7C1A9F70942BC3B939442C2E92F0CE6430914E30BE640A30
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.wTbMFj
- Size 300B
- SHA256 e5887926ae067746b060a3a2bc06a61b1389f142ed1cd419455e0b12795219e1
- MD5 7cd7c5799042c5edfd1de5e4a123a91b
- SHA1 16f5bc7d7b9c2e99de855422b4bbcbdd7d367358
- SHA512 d90d07def1ade29c00a4d2866f2431908a8899724199aefd5a899a70a4e4431d20e0652f03627863d88d2624e3673a4396f7594cd556b3fc92a102973d945aad
- TLSH T1A3E0C238B7702CE039454B38169F21986BC3B939842D6E91F1DE1430814E34BE740930
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.wfb6w9
- Size 214B
- SHA256 a920e58be08aceeabead9d08a6b8d6ea0d09c6b0c849450ee85b722e407ff092
- MD5 47b9b074ea8c9328c3004dd5aae4f725
- SHA1 b5720016bbd60d096a467c4a4eb088d1f6990754
- SHA512 44c351979bc7ab406fe8922d37a68d96b459b4b3604541b978b4d69a7e90031b87803a7d7965d2e3c6dd3017d718e8e79c82950c60ca4cac5a5c457301c5223a
- TLSH T17FD0A9397B306C702A050B2821AB1628AA82E47D800DAEA1E1EE0024424E38AAB80961
- MD5 SHA1 SHA512 TLSH