""ET CURRENT_EVENTS Successful Paypal (DE) Phish 2016-12-19""

SID: 2032727

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2016_12_19, deployment Perimeter, signature_severity Critical, tag Phishing, updated_at 2016_12_19, 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: "t1=" Depth: 3

• Value: "|25|40"

• Value: "&t2="

Within:

PCRE: "/^POST\x20(?[^\x20]+).+Referer\x3a\x20[^\r\n]+(?P=var)[\r\n]+/si"

Special Options:

• http_method

• nocase

• http_client_body

• http_client_body

• nocase

• http_client_body

• fast_pattern

source