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Linux.Siggen.1531
Added to the Dr.Web virus database:
2019-03-24
Virus description added:
2019-03-23
Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
/etc/inittab
/var/spool/cron/crontabs/root
/etc/rc.local
Malicious functions:
Substitutes application name for:
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 \"* * * * * <SAMPLE_FULL_PATH> > /dev/null 2>&1 &\") | crontab - > /dev/null 2>&1 &
grep -v <SAMPLE_FULL_PATH>
cat /etc/inittab
crontab -l
grep <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 \"* * * * * /dev/shm/<SAMPLE> > /dev/null 2>&1 &\") | crontab - > /dev/null 2>&1 &
grep -v /dev/shm/<SAMPLE>
grep /dev/shm/<SAMPLE>
sh -c echo \"0:2345:respawn:/dev/shm/<SAMPLE>\" >> /etc/inittab2
Performs operations with the file system:
Modifies file access rights:
/var/spool/cron/crontabs/tmp.mC76zR
/var/spool/cron/crontabs/tmp.GXuzxu
Creates or modifies files:
/etc/inittab2
/var/spool/cron/crontabs/tmp.mC76zR
/dev/shm/<SAMPLE>
/var/spool/cron/crontabs/tmp.GXuzxu
Deletes files:
Network activity:
Awaits incoming connections on ports:
Establishes connection:
<LOCAL_DNS_SERVER>
18#.##.149.22:2407
Connects to the following servers over the IRC protocol:
Server: 18#.#1.149.22; Command: NICK A5|b|0|1522151|unknown\nUSER muhstik localhost localhost :muhstik-11052018\n
DNS ASK:
Curing recommendations
Linux
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