""ET INFO Suspicious HTTP POST Only Containing Password - Possible Phishing""

SID: 2031523

Revision: 2

Class Type: misc-activity

Metadata: affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2021_01_14, deployment Perimeter, signature_severity Critical, tag Phishing, updated_at 2021_01_14, 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: "|0d 0a 0d 0a|password="

• Value: "POST"

• Value: !"&"

Within:

PCRE:

Special Options:

• nocase

• fast_pattern

• http_method

• http_client_body

source