alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Tech Support Phone Scam Landing M4 Jun 3"; flow:established,to_client; http.stat_code; content:"200"; http.content_type; content:"text/html"; startswith; file.data; content:"<title>System Official"; nocase; fast_pattern; content:"function stopNavigate"; nocase; distance:0; content:"<audio autoplay="; nocase; content:"autoplay"; nocase; distance:1; classtype:social-engineering; sid:2022853; rev:5; metadata:created_at 2016_06_03, confidence High, signature_severity Minor, updated_at 2024_03_05;)