""ET TROJAN Win32/Blacktech Plead CnC Activity (GET)""

SID: 2036308

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 2020_12_04, deployment Perimeter, former_category MALWARE, malware_family BlackTech, signature_severity Major, updated_at 2022_04_22

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: ".aspx?m="

  • Value: "User-Agent|3a 20|Mozilla/4.0 (compatible|3b 20|MSIE 8.0|3b 20|Win32)|0d 0a|"

  • Value: !"Referer|3a|"

  • Value: !"Accept"

Within:

PCRE: "/.aspx\?m=[^&]+&[a-z]=[^&]+&[a-z]=[A-F0-9]+$/Usi"

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_header

  • http_header

source