""ET TROJAN Cobalt Strike C2 Profile (news_indexedimages)""

SID: 2033065

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2021_06_01, deployment Perimeter, malware_family Cobalt_Strike, performance_impact Low, signature_severity Major, updated_at 2021_06_01, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation

Reference:

  • md5

  • 8ece22e6b6e564e3cbfb190bcbd5d3b9

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "User-Agent|3a 20|Mozilla|2f|5|2e|0|20 28|compatible|3b 20|MSIE|20|8|2e|0|3b 20|Windows|20|NT|20|6|2e|1|3b 20|Trident|2f|5|2e|0|29 0d 0a|"

  • Value: "GET /news_indexedimages_autrzd/" Depth: 31

  • Value: "&usqp=CAU HTTP/1.1|0d 0a|"

  • Value: "Referer|3a 20|http://www.google.com|0d 0a|"

Within:

PCRE:

Special Options:

  • http_header

  • fast_pattern

  • http_header

source