SID: 2035546

Revision: 4

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_03_21, deployment Perimeter, malware_family Cobalt_Strike, signature_severity Major, updated_at 2023_07_13, 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: "FunWebProducts|3b|"

  • Value: "IE0006_ver1|3b|EN_GB)|0d 0a|"

  • Value: !"Referer|3a|"

Within:

PCRE: "/^Host\x3a\x20\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3}\r\n/Hm"

Special Options:

  • http_method

  • http_header

  • fast_pattern

  • http_header

source