""ET TROJAN Cobalt Strike Malleable C2 Webbug Profile""

SID: 2032748

Revision: 3

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2017_04_27, deployment Perimeter, malware_family Cobalt_Strike, signature_severity Major, updated_at 2018_06_14, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation

Reference:

  • md5

  • dc65cbf12622eb55f0fd382e0fe250c5

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: to_server,established

Contents:

  • Value: "GET"

  • Value: "_utm.gif?utmac="

  • Value: "&utmcn="

  • Value: "&utmcs="

  • Value: "&utmsr="

  • Value: "&utmsc="

  • Value: "&utmul="

  • Value: !"Referer|3a|"

  • Value: !"www.google-analytics.com"

Within:

PCRE:

Special Options:

  • http_method

  • fast_pattern

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_uri

  • http_header

  • http_header

source