""ET CURRENT_EVENTS Observed Malicious SSL/TLS Certificate (PayPal Phish Landing)""

SID: 2037249

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_07_01, deployment Perimeter, signature_severity Critical, tag Phishing, updated_at 2022_07_01, 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: 443

Destination Network: $HOME_NET

Destination Port: any

Flow: from_server,established

Contents:

  • Value: "|16|"

  • Value: "|0b|"

  • Value: "|06 03 55 04 03|"

  • Value: "|1f|verify-paypal.authorizeddns.net"

Within: 32

PCRE:

Special Options:

  • fast_pattern

source