""ET CURRENT_EVENTS Successful Webmail Account Upgrade Phish 2016-07-15""

SID: 2032454

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Any, attack_target Client_Endpoint, created_at 2016_07_15, deployment Perimeter, signature_severity Critical, tag Phishing, updated_at 2016_07_15, 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: "form1=Y&aaa=" Depth: 12

• Value: "&ccc="

• Value: "&ddd="

Within:

PCRE: "/.php$/U"

Special Options:

• http_method

• http_uri

• fast_pattern

• http_client_body

• nocase

• http_client_body

• nocase

• http_client_body

source