""ET TROJAN Gamaredon APT Related CnC Activity (POST) M3""

SID: 2046701

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_06_30, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Critical, updated_at 2023_06_30

Reference:

  • md5

  • 1f5e6d502290f9ece3f0e7047facc7b6

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: ".html=?"

  • Value: "|3b 3b 2f|"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/^User-Agent\x3a\x20[^\r\n]+\x3b\x3b\x2f/Hmi"

Special Options:

  • http_method

  • http_uri

  • http_header

  • fast_pattern

  • http_header

source