""ET INFO Base64 Data URI Javascript Refresh - Possible Phishing Landing""

SID: 2031955

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2016_07_15, deployment Perimeter, signature_severity Critical, tag Phishing, updated_at 2016_07_29, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: from_server,established

Contents:

• Value: "<script"

• Value: "window.location="

• Value: "data|3a|text/html|3b|base64,"

Within: 22

PCRE:

Special Options:

• file_data

• nocase

• fast_pattern

source