""ET TROJAN Gamaredon APT Related Maldoc Activity (POST)""

SID: 2049913

Revision: 1

Class Type: misc-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2024_01_04, deployment Perimeter, confidence Medium, signature_severity Critical, tag Gamaredon, updated_at 2024_01_04

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: "|2f 5f|vti|5f|bin|2f|" Depth: 10

  • Value: ".exe/_vti_rpc"

  • Value: "User-Agent|3a 20|MSFrontPage/"

  • Value: "X-Vermeer-Content-Type|3a 20|"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/.exe\/_vti_rpc$/U"

Special Options:

  • http_method

  • http_uri

  • http_uri

  • fast_pattern

  • http_header

  • http_header

  • http_header

source