""ET POLICY Suspicious CVV Parameter in HTTP POST - Possible Phishing""

SID: 2026909

Revision: 3

Class Type: trojan-activity

Metadata: affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2019_02_14, deployment Perimeter, performance_impact Moderate, signature_severity Critical, tag Phishing, updated_at 2022_09_06, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing

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: "&cvv="

Within:

PCRE: "/\x26cvv\x3d[0-9]{3,4}/P"

Special Options:

• http_method

• nocase

• http_client_body

source