""ET TROJAN VoidRay Downloader CnC Activity""

SID: 2031649

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 2021_02_23, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2021_02_23

Reference:

  • md5

  • 082b7a27b2e75bbcde189fab82b0fe72

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?UID="

  • Value: "_"

  • Value: !"Referer|3a 20|"

  • Value: !"Accept|3a 20|"

Within: 1

PCRE:

Special Options:

  • http_method

  • fast_pattern

  • http_uri

  • http_uri

  • http_header

  • http_header

source