""ET TROJAN Villain C2 Framework HTTP Server Response""

SID: 2042770

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2022_12_13, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, updated_at 2022_12_13

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "Access-Control-Allow-Origin|3a 20|*"

  • Value: "Server|3a 20|Apache/2.4.1|20 0d 0a|"

  • Value: "HTTP/1.0 200 OK"

Within:

PCRE:

Special Options:

  • http_header

  • http_header

  • fast_pattern

source