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Linux.Siggen.2171

Added to the Dr.Web virus database: 2019-09-25

Virus description added:

Technical Information

Malicious functions:
Launches itself as a daemon
Modifies firewall settings:
  • iptables -I INPUT -p tcp --dport 443 -j DROP
  • iptables -I INPUT -p tcp --dport 8080 -j DROP
  • iptables -I INPUT -p tcp --dport 80 -j DROP
  • iptables -I INPUT -s 91.215.158.0/24 -j ACCEPT
  • iptables -I INPUT -s 195.3.144.0/24 -j ACCEPT
  • iptables -I INPUT -s 185.246.128.0/24 -j ACCEPT
  • iptables -D INPUT -p tcp --dport 443 -j DROP
  • iptables -D INPUT -p tcp --dport 8080 -j DROP
  • iptables -D INPUT -p tcp --dport 80 -j DROP
  • iptables -D INPUT -s 91.215.158.0/24 -j ACCEPT
  • iptables -D INPUT -s 195.3.144.0/24 -j ACCEPT
  • iptables -D INPUT -s 185.246.128.0/24 -j ACCEPT
Launches processes:
  • bash -c ./.nttpd
  • ./.nttpd
  • bash -c exit 77
  • bash -c ps | grep .nttpd > .nttpd.ps
  • ps
  • grep .nttpd
  • bash -c exit 66
  • bash -c iptables -I INPUT -p tcp --dport 443 -j DROP
  • bash -c iptables -I INPUT -p tcp --dport 8080 -j DROP
  • bash -c iptables -I INPUT -p tcp --dport 80 -j DROP
  • bash -c iptables -I INPUT -s 91.215.158.0/24 -j ACCEPT
  • bash -c iptables -I INPUT -s 195.3.144.0/24 -j ACCEPT
  • bash -c iptables -I INPUT -s 185.246.128.0/24 -j ACCEPT
  • bash -c iptables -D INPUT -p tcp --dport 443 -j DROP
  • bash -c iptables -D INPUT -p tcp --dport 8080 -j DROP
  • bash -c iptables -D INPUT -p tcp --dport 80 -j DROP
  • bash -c iptables -D INPUT -s 91.215.158.0/24 -j ACCEPT
  • bash -c iptables -D INPUT -s 195.3.144.0/24 -j ACCEPT
  • bash -c iptables -D INPUT -s 185.246.128.0/24 -j ACCEPT
Performs operations with the file system:
Modifies file access rights:
  • /root/.nttpd
Creates or modifies files:
  • /root/.nttpd
  • /root/.nttpd.ps
  • /root/.nttpd.pid
  • /.nttpd.pid
Deletes files:
  • /root/.nttpd
  • /root/.nttpd.ps
Network activity:
Establishes connection:
  • 18#.###.128.181:15181
  • 18#.###.128.181:16181
  • 19#.#.144.185:16181
  • 91.###.158.118:16181
Sends data to the following servers:
  • 12#.#.15.29:123
  • 18#.###.128.181:16181
Receives data from the following servers:
  • 18#.###.128.181:15181
Other:
Collects CPU information
Collects RAM information

Curing recommendations


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