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:
- kcd7q7u613wg
Modifies router settings:
- /bin/nvram
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:
- /etc/inittab2
Network activity:
Awaits incoming connections on ports:
- 127.0.0.1:59000
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:
- ir#.##-zahlung.eu