alert http $EXTERNAL_NET any -> $HOME_NET any (
msg:"ET PHISHING Dropbox Phishing Landing 2018-02-15";
flow:established,to_client;
file_data;
content:"<title";
content:"Dropbox Verification"; within:30; nocase; fast_pattern;
content:"PhoneVerificationChallenge"; nocase; distance:0;
content:"RecoveryEmailChallenge"; nocase; distance:0;
classtype:social-engineering;
sid:2025365; rev:1;
metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2018_02_15, deployment Perimeter, confidence Medium, signature_severity Minor, tag Phishing, updated_at 2019_07_26;
)