""ET CURRENT_EVENTS Successful Webmail Phish M1 2016-06-22""

SID: 2032685

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2016_06_22, deployment Perimeter, signature_severity Critical, tag Phishing, updated_at 2017_10_02, 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: to_server,established

Contents:

  • Value: "POST"

  • Value: ".php"

  • Value: "username=" Depth: 9

  • Value: "&password="

  • Value: "&domain="

  • Value: "&Phone"

Within:

PCRE: "/.php$/Ui"

Special Options:

  • http_method

  • http_uri

  • nocase

  • fast_pattern

  • http_client_body

  • nocase

  • http_client_body

  • nocase

  • http_client_body

  • nocase

  • http_client_body

source