""ET TROJAN [TGI] Cobalt Strike Malleable C2 Response (O365 Profile) M2""

SID: 2028589

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 2019_09_17, deployment Perimeter, malware_family Cobalt_Strike, signature_severity Major, updated_at 2024_01_25, reviewed_at 2024_03_25, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "16723708fc9|0d 0a|X-CalculatedBETarget|3a 20|BY2PR06MB549.namprd06.prod.outlook.com"

  • Value: "X-FEServer|3a 20|CY4PR02CA0010"

Within:

PCRE:

Special Options:

  • http_header

  • fast_pattern

  • http_header

source