SID: 2044851

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_03_31, deployment Perimeter, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2023_03_31

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: ".php?filename="

  • Value: "User-Agent|3a 20|Mozilla/5.0|0d 0a|"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/.php\?filename=[A-F0-9]{8}-[A-F0-9]{8}-[A-F0-9]{8}-[A-F0-9]{8}$/U"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_header

  • http_header

source