""ET TROJAN W32/Echmark/MarkiRAT CnC Activity M3""

SID: 2033429

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2021_07_26, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2021_07_26

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: ".php?u="

  • Value: "User-Agent|3a 20|WinHTTP|0d 0a|"

  • Value: "p=
    Hello|3a 20|" Depth: 19

  • Value: !"Referer|3a 20|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_header

  • fast_pattern

  • http_client_body

  • http_header

source