""ET TROJAN SeaDuke CnC Beacon""

SID: 2021413

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2015_07_15, deployment Perimeter, performance_impact Moderate, signature_severity Major, tag c2, updated_at 2024_04_08, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

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: ".php"

  • Value: "Accept-Encoding|3a 20|identity|0d 0a|Host|3a 20|" Depth: 33

  • Value: !"Accept-L"

  • Value: !"Accept|3a|"

Within:

PCRE: "/^[a-zA-Z0-9_-]{2,6}=[a-zA-Z0-9_-]+(?:\x3b\x20[a-zA-Z0-9_-]{2,6}=[a-zA-Z0-9_-]+){1,6}={0,2}?$/C"

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_header

  • http_header

source