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Linux.Packed.497

Added to the Dr.Web virus database: 2019-07-05

Virus description added:

Technical Information

Malicious functions:
Substitutes application name for:
Modifies firewall settings:
  • iptables -F
  • /sbin/iptables -F
  • /sbin/iptables -X
Manages services:
  • service iptables stop
  • systemctl list-unit-files --full --type=socket
  • systemctl -p Triggers show acpid.socket
  • systemctl -p Triggers show dbus.socket
  • systemctl -p Triggers show saned.socket
  • systemctl -p Triggers show ssh.socket
  • systemctl -p Triggers show syslog.socket
  • systemctl -p Triggers show systemd-initctl.socket
  • systemctl -p Triggers show systemd-journald-dev-log.socket
  • systemctl -p Triggers show systemd-journald.socket
  • systemctl -p Triggers show systemd-shutdownd.socket
  • systemctl -p Triggers show systemd-udevd-control.socket
  • systemctl -p Triggers show systemd-udevd-kernel.socket
  • systemctl stop iptables.service
  • service firewalld stop
  • systemctl stop firewalld.service
Launches processes:
  • rm -rf /tmp/* /var/* /var/run/* /var/tmp/*
  • fuser
  • rm -rf /bin/netstat
  • basename /usr/sbin/service
  • sed -ne s/\.socket\s*[a-z]*\s*$/.socket/p
  • rm -rf ~/.bash_history
  • mv <SAMPLE_FULL_PATH> /bin/.developer
  • sh -c mv /etc/rc.bak /etc/rc.local
  • mv /etc/rc.bak /etc/rc.local
  • sh -c mv /etc/init.d/rcS.bak /etc/init.d/rcS
  • mv /etc/init.d/rcS.bak /etc/init.d/rcS
Performs operations with the file system:
Creates or modifies files:
  • /var/lock/emptiness.lock
  • <SAMPLE_FULL_PATH>
Deletes files:
  • /tmp/*
  • /var/*
  • /var/run/*
  • /var/tmp/*
  • /bin/netstat
  • /root/.bash_history
Network activity:
Establishes connection:
  • <LOCAL_DNS_SERVER>
  • 35.###.244.105:8080
DNS ASK:
  • em#.#eb2tor.cf
Receives data from the following servers:
  • <LOCAL_DNS_SERVER>

Curing recommendations


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