""ET TROJAN FOX-SRT ShimRat check-in (Yuok)""

SID: 2022902

Revision: 1

Class Type: trojan-activity

Metadata: created_at 2016_06_15, updated_at 2016_06_15

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: ".php"

  • Value: "User-Agent|3a 20|" Depth: 12

  • Value: !"Content-Type|3a|"

  • Value: !"Referer:"

  • Value: !"Cookie|3a|"

  • Value: "Youk$$"

Within:

PCRE: "/Yuok$/P"

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_header

  • http_header

  • http_client_body

source