alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET PHISHING Common Form POST - M&T Bank Phishing Landing 2020-06-11"; flow:established,to_client; file.data; content:"M&amp|3b|T Bank"; nocase; content:"<form action=|22|email1.php|22 20|method=|22|post|22 20|id=|22|aspnetform|22|>"; distance:0; classtype:social-engineering; sid:2030295; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2020_06_11, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2020_06_11, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)