""ET TROJAN Cobalt Strike Malleable C2 JQuery Custom Profile M2""

SID: 2033658

Revision: 3

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_09_22, deployment Perimeter, malware_family Cobalt_Strike, signature_severity Major, updated_at 2021_08_05, reviewed_at 2024_03_05, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation

Reference:

  • md5

  • 8c9903db02a29847d04d0fd81dd67046

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: "/jquery-" Depth: 8

  • Value: ".min.js"

  • Value: "__cfduid=" Depth: 9

  • Value: "Referer|3a 20|http|3a|//code.jquery.com/|0d 0a|Accept"

  • Value: "Accept|3a 20|text/html,application/xhtml+xml,application/xml|3b|q=0.9,/|3b|q=0.8|0d 0a|"

  • Value: "Accept-Encdoing|3a 20|gzip, deflate|0d 0a|"

Within:

PCRE: "/^__cfduid=[A-Za-z0-9_-]{171}$/Cs"

Special Options:

  • http_method

  • http_uri

  • http_uri

  • http_cookie

  • http_header

  • http_header

  • http_header

source