SID: 2032331

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2021_03_25, deployment Perimeter, signature_severity Major, tag Ransomware, updated_at 2021_03_25, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact

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: "/vpn-service/" Depth: 13

  • Value: "crunchyroll-vpn"

Within:

PCRE: "/^\/vpn-service\/[a-z]{15}\/crunchyroll-vpn$/U"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_uri

source