""ET TROJAN [Fireeye] Backdoor.BEACON M1""

SID: 2031323

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2020_12_14, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_12_14, 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: "POST"

  • Value: "name=|22|"

  • Value: "|22 3b|filename=|22|"

  • Value: "|22 0a|Content-Type|3a|"

Within:

PCRE:

Special Options:

  • http_method

  • http_client_body

  • http_client_body

  • http_client_body

  • fast_pattern

source