alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Fake Virus Phone Scam Landing Mar 09 2017"; flow:from_server,established; http.stat_code; content:"200"; http.content_type; content:"text/html"; startswith; file.data; content:"<title>System Virus Alert"; nocase; fast_pattern; content:"|3a|-webkit-full-screen"; nocase; distance:0; classtype:social-engineering; sid:2024042; rev:3; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2017_03_09, deployment Perimeter, confidence High, signature_severity Major, tag Phishing, updated_at 2020_08_04;)