alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET PHISHING Dropbox Phishing Landing Feb 27 2017"; flow:from_server,established; file_data; content:"<title>Dropbox"; nocase; fast_pattern; content:"app.png"; nocase; distance:0; content:"live.png"; nocase; distance:0; content:"off.png"; nocase; distance:0; classtype:social-engineering; sid:2025689; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2017_02_27, deployment Perimeter, confidence Medium, signature_severity Major, tag Phishing, updated_at 2019_07_26;)