""ET TROJAN Cobalt Strike Malleable C2 (OneDrive)""

SID: 2029743

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_03_26, deployment Perimeter, malware_family Cobalt_Strike, signature_severity Major, updated_at 2020_03_26, reviewed_at 2024_02_29, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation

Reference:

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: "/preload?manifest=wac"

  • Value: "E=P|3a|"

  • Value: "=|3a|PFzM9cj"

  • Value: "=|3a|PFzM9cj|0d 0a|"

  • Value: !"Referer|3a|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_cookie

  • http_cookie

  • fast_pattern

  • http_header

source