alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Fake AV Phone Scam Landing Jan 24"; flow:established,to_client; http.stat_code; content:"200"; http.content_type; content:"text/html"; startswith; file.data; content:"<title> Windows Official Support"; fast_pattern; nocase; content:"This Is A Critical Warning"; nocase; distance:0; classtype:social-engineering; sid:2023757; rev:3; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2017_01_24, confidence High, signature_severity Major, tag Phishing, updated_at 2024_02_28;)