alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Tech Support Phone Scam Landing Feb 09 2017"; flow:from_server,established; http.stat_code; content:"200"; http.content_type; content:"text/html"; startswith; file.data; content:"<title>Microsoft Official Support"; nocase; fast_pattern; content:"<audio"; nocase; distance:0; content:"loop="; nocase; within:50; classtype:social-engineering; sid:2023889; rev:3; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2017_02_09, deployment Perimeter, confidence High, signature_severity Major, tag Phishing, updated_at 2020_08_04;)