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Linux.Packed.568

Added to the Dr.Web virus database: 2019-08-16

Virus description added:

Technical Information

Malicious functions:
Substitutes application name for:
  • sshd
Modifies firewall settings:
  • iptables -I INPUT -p tcp --dport 22 -j DROP
  • iptables -I INPUT -p tcp --dport 23 -j DROP
  • iptables -I INPUT -p tcp --dport 2323 -j DROP
  • iptables -I OUTPUT -p tcp --sport 22 -j DROP
  • iptables -I OUTPUT -p tcp --sport 23 -j DROP
  • iptables -I OUTPUT -p tcp --sport 2323 -j DROP
  • iptables -I INPUT -p udp --dport 6881 -j ACCEPT
  • iptables -I OUTPUT -p udp --sport 6881 -j ACCEPT
  • iptables -I PREROUTING -t nat -p udp --dport 6881 -j ACCEPT
  • iptables -I INPUT -p udp --dport 47587 -j ACCEPT
  • iptables -I OUTPUT -p udp --sport 47587 -j ACCEPT
Launches processes:
  • sh -c echo 3 > /proc/sys/vm/drop_caches
  • sh -c iptables -I INPUT -p tcp --dport 22 -j DROP
  • sh -c iptables -I INPUT -p tcp --dport 23 -j DROP
  • sh -c iptables -I INPUT -p tcp --dport 2323 -j DROP
  • sh -c iptables -I OUTPUT -p tcp --sport 22 -j DROP
  • sh -c iptables -I OUTPUT -p tcp --sport 23 -j DROP
  • sh -c iptables -I OUTPUT -p tcp --sport 2323 -j DROP
  • sh -c iptables -I INPUT -p udp --dport 6881 -j ACCEPT
  • sh -c iptables -I OUTPUT -p udp --sport 6881 -j ACCEPT
  • sh -c iptables -I PREROUTING -t nat -p udp --dport 6881 -j ACCEPT
  • sh -c iptables -I INPUT -p udp --dport 47587 -j ACCEPT
  • sh -c iptables -I OUTPUT -p udp --sport 47587 -j ACCEPT
Performs operations with the file system:
Creates or modifies files:
  • /proc/sys/vm/drop_caches
Network activity:
Awaits incoming connections on ports:
  • 127.0.0.1:14737
  • 0.0.0.0:6881
  • 0.0.0.0:47587
Establishes connection:
  • [:##]:6881
  • 127.0.0.1:6881
  • [:##]:47587
  • 127.0.0.1:47587

Curing recommendations


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