""ET TROJAN Win32/Gamaredon CnC Activity (GET)""

SID: 2044127

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_02_06, deployment Perimeter, deployment SSLDecrypt, signature_severity Major, updated_at 2023_02_08, reviewed_at 2023_11_17

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: to_server,established

Contents:

  • Value: "GET"

  • Value: "|3a 3a|"

  • Value: "?=Read"

  • Value: "|3a 3a 2f 2e|"

  • Value: "|2f 2e 0d 0a|"

  • Value: "Accept-Language|3a 20|ru|2d|RU|2c|ru|3b|q|3d|0|2e|8|2c|en|2d|US|3b|q|3d|0|2e|6|2c|en|3b|q|3d|0|2e|4|0d 0a|"

Within:

PCRE: "/cgm\?=Read$/U"

Special Options:

  • http_method

  • http_uri

  • http_uri

  • fast_pattern

  • http_header

  • http_header

source