alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED SUSPICIOUS JS Multiple Debug Math.atan2 calls with CollectGarbage"; flow:established,from_server; file_data; content:"CollectGarbage"; nocase; fast_pattern; content:"Math.atan2"; nocase; content:"Math.atan2"; nocase; distance:0; content:"Math.atan2"; nocase; distance:0; reference:url,blog.exodusintel.com/2013/01/02/happy-new-year-analysis-of-cve-2012-4792/; reference:url,cyvera.com/cve-2013-3897-analysis-of-yet-another-ie-0-day/; classtype:attempted-user; sid:2017657; rev:8; metadata:affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2013_11_04, deployment Perimeter, signature_severity Major, tag Web_Client_Attacks, updated_at 2022_07_05;)