""ET TROJAN PoshC2 - Observed Default URI Structure M13""

SID: 2036522

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_05_06, deployment Perimeter, deployment SSLDecrypt, malware_family PoshC2, signature_severity Major, tag c2, updated_at 2022_05_06, 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: "/load/pages/index.php/" Depth: 22

  • Value: "/?"

Within: 38

PCRE: "/\/\?[A-Za-z0-9]{15}$/U"

Special Options:

  • http_uri

  • fast_pattern

  • http_uri

source