""ET TROJAN PshellBkdr C2 Traffic Known Authorization Bearer in HTTP Request (POST)""

SID: 2054750

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_07_29, deployment Perimeter, confidence High, signature_severity Critical, tag c2, updated_at 2024_07_29, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol

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: "|0d 0a|Authorization|3a 20|Bearer|20|56e620b9e45120dfd1c534aee0b10c9eb3fc3948e7564cda3313a2ed456706e8|0d 0a|"

Within:

PCRE:

Special Options:

  • http_method

  • http_header

  • nocase

source