Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET PHISHING Observed Tycoon Credential Theft Form"; flow:established,to_client; http.response_body; content:"a|40|b|2e|com|3c 2f|span|3e|"; fast_pattern; classtype:social-engineering; sid:2065917; rev:2; metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_11_26, deployment Perimeter, deployment SSLDecrypt, malware_family Tycoon2FA, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2026_01_29, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing; target:dest_ip;)