""ET TROJAN PrivateLoader CnC Activity (POST)""

SID: 2054711

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_26, deployment Perimeter, malware_family PrivateLoader, confidence High, signature_severity Critical, tag c2, updated_at 2024_07_26, 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: "|2f|api|2f|" Depth: 5

  • Value: "fish.php"

  • Value: "data=" Depth: 5

  • Value: "Connection|3a 20|Keep-Alive|0d 0a|"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/fish.php$/U"

Special Options:

  • http_method

  • http_uri

  • http_uri

  • fast_pattern

  • http_client_body

  • http_header

  • http_header

source