Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
- /var/spool/cron/crontabs/root
- /etc/init.d/siejrfn
- /etc/init.d/<SAMPLE>
Malicious functions:
Launches itself as a daemon
Substitutes application name for:
- /var/Sofia
Modifies firewall settings:
- iptables -F
Launches processes:
- sh -c busybox killall /var/Sofia
- busybox killall /var/Sofia
- sh -c iptables -F >/dev/null 2>&1
- sh -c crontab -l > cAaDcdcDd
- crontab -l
- sh -c (crontab -l 2>/dev/null; echo '@reboot <SAMPLE_FULL_PATH> None.reboot') | crontab -
- crontab -
- sh -c cp <SAMPLE_FULL_PATH> /etc/init.d
- cp <SAMPLE_FULL_PATH> /etc/init.d
Performs operations with the file system:
Modifies file access rights:
- /var/spool/cron/crontabs/tmp.6ZiUCg
Creates or modifies files:
- /root/cAaDcdcDd
- /var/spool/cron/crontabs/tmp.6ZiUCg
Deletes files:
- /var/spool/cron/cAaDcdcDd
- /dev/zero
Network activity:
Awaits incoming connections on ports:
- 0.0.0.0:9105
Establishes connection:
- 8.#.8.8:53
- 37.##.226.209:28344
Attacks using a special dictionary (brute-force technique) via the Telnet protocol.
