""ET TROJAN MalDoc/Gamaredon CnC Activity M3""

SID: 2044829

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_03_29, deployment Perimeter, signature_severity Major, tag Gamaredon, updated_at 2023_03_29

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "HEAD"

  • Value: "/DESKTOP-" Depth: 9

  • Value: "User-Agent|3a 20|Microsoft Office Existence Discovery|0d 0a|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_header

source