alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET PHISHING Suspicious Dropbox Page - Possible Phishing Landing"; flow:to_client,established; http.stat_code; content:"200"; http.content_type; content:"text/html"; startswith; file.data; content:"<title>Dropbox"; fast_pattern; content:"<form"; distance:0; nocase; content:"password"; nocase; distance:0; content:!"_csp_external_script_nonce"; content:!"when_ready_configure_requirejs"; distance:0; content:!"DETERMINISTIC_MONKEY_CHECK"; distance:0; content:!"<title>Dropbox Status</title>"; classtype:social-engineering; sid:2025659; rev:5; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2016_08_29, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2021_12_09, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)