Analysis
-
max time kernel
0s -
max time network
47s -
platform
linux_amd64 -
resource
ubuntu1804-amd64-en-20211208 -
submitted
01-07-2022 04:18
Static task
static1
Behavioral task
behavioral1
Sample
8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28
Resource
ubuntu1804-amd64-en-20211208
General
-
Target
8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28
-
Size
611KB
-
MD5
28b4c1d34913014f2ea43298db493216
-
SHA1
113cb9d7f85f8d264f5a75ede41e275478841aac
-
SHA256
8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28
-
SHA512
634af7f9986942d1e81fef965ea7f068051f72f2102e4dce0861a2df3c983f3d0001b7b9eec7ee98f6110eeed24761145aebaac9b7a267a84975797c00391e1b
Malware Config
Signatures
-
Writes file to system bin folder 1 TTPs 3 IoCs
description ioc /bin/dtjnbafmgr /bin/dtjnbafmgr /bin/yaejippwll /bin/yaejippwll /bin/znmnkvbkmy /bin/znmnkvbkmy -
Creates/modifies Cron job 1 TTPs 2 IoCs
Cron allows running tasks on a schedule, and is commonly used for malware persistence.
description ioc Process /etc/crontab /etc/crontab sed /etc/crontab /etc/crontab sh -
Modifies rc script 1 TTPs 12 IoCs
Adding/modifying system rc scripts is a common persistence mechanism.
description ioc Process /etc/rc2.d/S908c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 /etc/rc2.d/S908c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 Process not Found /etc/rc0.d/ /etc/rc0.d/ update-rc.d /etc/rc6.d/ /etc/rc6.d/ update-rc.d /etc/rc1.d/ /etc/rc1.d/ update-rc.d /etc/rc1.d/S908c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 /etc/rc1.d/S908c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 Process not Found /etc/rc4.d/S908c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 /etc/rc4.d/S908c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 Process not Found /etc/rc5.d/S908c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 /etc/rc5.d/S908c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 Process not Found /etc/rc5.d/ /etc/rc5.d/ update-rc.d /etc/rc4.d/ /etc/rc4.d/ update-rc.d /etc/rc3.d/ /etc/rc3.d/ update-rc.d /etc/rc2.d/ /etc/rc2.d/ update-rc.d /etc/rc3.d/S908c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 /etc/rc3.d/S908c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 Process not Found -
Write file to user bin folder 1 TTPs 5 IoCs
description ioc Process /usr/sbin/update-rc.d /usr/sbin/update-rc.d update-rc.d /usr/bin/dtjnbafmgr /usr/bin/dtjnbafmgr Process not Found /usr/bin/yaejippwll /usr/bin/yaejippwll Process not Found /usr/bin/znmnkvbkmy /usr/bin/znmnkvbkmy Process not Found /usr/bin/mjwltztskq /usr/bin/mjwltztskq Process not Found -
Reads runtime system information 7 IoCs
Reads data from /proc virtual filesystem.
description ioc Process /proc/1/environ /proc/1/environ systemctl /proc/1/sched /proc/1/sched systemctl /proc/cmdline /proc/cmdline systemctl /proc/filesystems /proc/filesystems sed /proc/filesystems /proc/filesystems systemctl /proc/self/stat /proc/self/stat systemctl /proc/sys/kernel/osrelease /proc/sys/kernel/osrelease systemctl -
Writes file to tmp directory 3 IoCs
Malware often drops required files in the /tmp directory.
description ioc /tmp/dtjnbafmgr /tmp/dtjnbafmgr /tmp/yaejippwll /tmp/yaejippwll /tmp/znmnkvbkmy /tmp/znmnkvbkmy
Processes
-
./8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28./8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e281⤵PID:571
-
/bin/shsh -c "sed -i '/\\/etc\\/cron.hourly\\/gcc.sh/d' /etc/crontab && echo '*/3 * * * * root /etc/cron.hourly/gcc.sh' >> /etc/crontab"1⤵
- Creates/modifies Cron job
PID:577 -
/bin/sedsed -i "/\\/etc\\/cron.hourly\\/gcc.sh/d" /etc/crontab2⤵
- Creates/modifies Cron job
- Reads runtime system information
PID:578
-
-
/bin/chkconfigchkconfig --add 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e281⤵PID:574
-
/sbin/chkconfigchkconfig --add 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e281⤵PID:574
-
/usr/bin/chkconfigchkconfig --add 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e281⤵PID:574
-
/usr/sbin/chkconfigchkconfig --add 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e281⤵PID:574
-
/usr/local/bin/chkconfigchkconfig --add 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e281⤵PID:574
-
/usr/local/sbin/chkconfigchkconfig --add 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e281⤵PID:574
-
/usr/X11R6/bin/chkconfigchkconfig --add 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e281⤵PID:574
-
/bin/update-rc.dupdate-rc.d 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 defaults1⤵PID:576
-
/sbin/update-rc.dupdate-rc.d 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 defaults1⤵PID:576
-
/usr/bin/update-rc.dupdate-rc.d 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 defaults1⤵PID:576
-
/usr/sbin/update-rc.dupdate-rc.d 8c765d8fdc96e55d5d050e875b5b58108ec0754cef6b9bf76684db49890e2e28 defaults1⤵
- Modifies rc script
- Write file to user bin folder
PID:576 -
/bin/systemctlsystemctl daemon-reload2⤵
- Reads runtime system information
PID:582
-
-
/usr/bin/dtjnbafmgr/usr/bin/dtjnbafmgr "sleep 1" 5721⤵PID:588
-
/usr/bin/dtjnbafmgr/usr/bin/dtjnbafmgr "netstat -an" 5721⤵PID:603
-
/usr/bin/dtjnbafmgr/usr/bin/dtjnbafmgr "netstat -an" 5721⤵PID:609
-
/usr/bin/dtjnbafmgr/usr/bin/dtjnbafmgr top 5721⤵PID:612
-
/usr/bin/dtjnbafmgr/usr/bin/dtjnbafmgr "ls -la" 5721⤵PID:615
-
/usr/bin/yaejippwll/usr/bin/yaejippwll "netstat -an" 5721⤵PID:618
-
/usr/bin/yaejippwll/usr/bin/yaejippwll "cat resolv.conf" 5721⤵PID:621
-
/usr/bin/yaejippwll/usr/bin/yaejippwll su 5721⤵PID:624
-
/usr/bin/yaejippwll/usr/bin/yaejippwll id 5721⤵PID:627
-
/usr/bin/yaejippwll/usr/bin/yaejippwll "netstat -an" 5721⤵PID:630
-
/usr/bin/znmnkvbkmy/usr/bin/znmnkvbkmy bash 5721⤵PID:633
-
/usr/bin/znmnkvbkmy/usr/bin/znmnkvbkmy "ls -la" 5721⤵PID:636
-
/usr/bin/znmnkvbkmy/usr/bin/znmnkvbkmy who 5721⤵PID:639
-
/usr/bin/znmnkvbkmy/usr/bin/znmnkvbkmy "echo \"find\"" 5721⤵PID:642
-
/usr/bin/znmnkvbkmy/usr/bin/znmnkvbkmy sh 5721⤵PID:645
-
/usr/bin/mjwltztskq/usr/bin/mjwltztskq "echo \"find\"" 5721⤵PID:648