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Linux.Siggen.4059

Aggiunto al database dei virus Dr.Web: 2021-07-20

La descrizione è stata aggiunta:

Technical Information

Malicious functions:
Performs process tracing:
  • <SAMPLE>
  • <SAMPLE_FULL_PATH>
Modifies firewall settings:
  • /usr/sbin/iptables -A OUTPUT -m set --match-set block src -j DROP
  • /usr/sbin/iptables -A OUTPUT -m set --match-set block dst -j DROP
  • /usr/sbin/iptables -I INPUT -m set --match-set block src -j DROP
  • /usr/sbin/iptables -I INPUT -m set --match-set block dst -j DROP
  • /usr/sbin/iptables -A INPUT -m set --match-set block src -j DROP
  • /usr/sbin/iptables -A INPUT -m set --match-set block dst -j DROP
  • /usr/sbin/iptables -I OUTPUT -m set --match-set block src -j DROP
  • /usr/sbin/iptables -I OUTPUT -m set --match-set block dst -j DROP
  • /usr/sbin/iptables -A OUTPUT -m set --match-set block src -j REJECT
  • /usr/sbin/iptables -A OUTPUT -m set --match-set block dst -j REJECT
  • /usr/sbin/iptables -I INPUT -m set --match-set block src -j REJECT
  • /usr/sbin/iptables -I INPUT -m set --match-set block dst -j REJECT
  • /usr/sbin/iptables -A INPUT -m set --match-set block src -j REJECT
  • /usr/sbin/iptables -A INPUT -m set --match-set block dst -j REJECT
  • /usr/sbin/iptables -I OUTPUT -m set --match-set block src -j REJECT
  • /usr/sbin/iptables -I OUTPUT -m set --match-set block dst -j REJECT
Launches processes:
  • /bin/bash <SAMPLE_FULL_PATH> -c exec '<SAMPLE_FULL_PATH>' \"$@\" <SAMPLE_FULL_PATH>
  • <SAMPLE_FULL_PATH>
  • /bin/bash <SAMPLE_FULL_PATH> -c
  • /usr/sbin/ipset create block hash:net
  • wget http://srv62.com/block.txt -O /tmp/block.txt
Kills the following processes:
  • <SAMPLE>
  • <SAMPLE_FULL_PATH>
Performs operations with the file system:
Creates or modifies files:
  • /tmp/block.txt
Network activity:
Establishes connection:
  • <LOCAL_DNS_SERVER>
  • 10#.##1.51.40:80
DNS ASK:
  • sr##2.com
Other:
Collects RAM information

Curing recommendations


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