alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Fake AV Phone Scam Landing July 20 2015 M1"; flow:to_client,established; file_data; content:"us_win.mp3"; fast_pattern; content:"yourOS|28 29|"; distance:0; content:"myFunction|28 29|"; distance:0; content:"onload_fun|28 29|"; distance:0; classtype:social-engineering; sid:2021500; rev:3; metadata:created_at 2015_07_20, confidence High, signature_severity Minor, updated_at 2019_08_16;)