""ET TROJAN Win64/FakeUnity CnC Activity (POST)""

SID: 2051697

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2024_03_19, deployment Perimeter, signature_severity Major, tag c2, updated_at 2024_03_19, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol

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: ".asp"

  • Value: "ODU0NjU2bklyeTJUSzlpaQ=="

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/.asp$/U"

Special Options:

  • http_method

  • http_uri

  • http_client_body

  • fast_pattern

  • http_header

source