""ET TROJAN Win32/LeftHook Stealer CnC Activity (GET) M2""

SID: 2045002

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_04_18, deployment Perimeter, signature_severity Major, updated_at 2023_04_18

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: ".php?code_request="

  • Value: "Connection|3a 20|keep-alive|0d 0a|"

Within:

PCRE: "/^Host\x3a\x20(?:[0-9]{1,3}.){3}[0-9]{1,3}$/Hm"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_header

source