""ET TROJAN CHM Stealer CnC Host Profile Exfil (POST)""

SID: 2054783

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_30, deployment Perimeter, confidence High, signature_severity Critical, tag c2, updated_at 2024_07_30, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol

Reference:

  • md5

  • fee9d2b13985879ba348080a9bf4e6f1

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: "/upload"

  • Value: "User|20|accounts|20|for|20|" Depth: 18

  • Value: "|5c|n|5c|n|20|Windows|20|IP|20|Configuration|5c|n|5c|n"

  • Value: "|20|IP|20|Routing|20|Enabled"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_client_body

  • fast_pattern

  • http_client_body

  • http_client_body

source