alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET PHISHING Dropbox Phishing Landing May 31 2017"; flow:from_server,established; http.stat_code; content:"200"; http.content_type; content:"text/html"; startswith; file.data; content:"<title>Dropbox"; nocase; content:"Select your email provider"; nocase; fast_pattern; distance:0; content:"Gmail"; nocase; distance:0; content:"Yahoo"; nocase; distance:0; classtype:social-engineering; sid:2025661; rev:3; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2017_05_31, deployment Perimeter, confidence Medium, signature_severity Minor, tag Phishing, updated_at 2020_08_06;)