""ET TROJAN AHK/BKDR_HTV.ZKGD-A CnC Checkin""

SID: 2027155

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 2019_04_04, deployment Perimeter, malware_family BKDR_HTV_ZKGD_A, performance_impact Low, signature_severity Major, updated_at 2019_04_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: ".php"

  • Value: "&string=" Depth: 8

  • Value: "|20|Charset=UTF-8|0d|"

  • Value: !"Referer|3a|"

Within:

PCRE: "/^&string=[A-F0-9]+$/P"

Special Options:

  • http_method

  • http_uri

  • http_client_body

  • fast_pattern

  • http_header

  • http_header

source