""ET TROJAN Operation Buhtrap CnC Beacon 2""

SID: 2020891

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2015_04_11, deployment Perimeter, signature_severity Major, tag c2, updated_at 2015_11_13, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

  • md5

  • 24fac66b3a6d55a83e1309bc530b032e

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "/menu.php"

  • Value: !"Referer|3a|"

  • Value: "Content-Type|3a 20|application/octet-stream|0d 0a|"

  • Value: "rv|3a|20.0"

  • Value: "Firefox/20.0"

Within:

PCRE: "/\/menu.php$/U"

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_header

  • http_header

  • http_header

source