""ET TROJAN Win32/Trojan.Valyria.6015 CnC Activity (GET)""

SID: 2035223

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 2022_02_18, deployment Perimeter, signature_severity Major, updated_at 2022_02_18, reviewed_at 2024_06_26

Reference:

  • md5

  • a118a3030807156eca8f805b8b83ce1f

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: "/eln-images/" Depth: 12

  • Value: "WindowsPowerShell/"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/^User-Agent\x3a\x20[^\r\n]+WindowsPowerShell\//Hmi"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_header

  • http_header

source