alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED Blackhole Exploit Kit Landing Page Structure"; flow:established,to_client; file_data; content:"|3c|script>try{"; fast_pattern; content:"Math."; within:15; content:"}catch("; within:20; content:"eval"; within:17; classtype:exploit-kit; sid:2015579; rev:11; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2012_08_07, deployment Perimeter, malware_family Blackhole, signature_severity Critical, tag Blackhole, tag Exploit_Kit, updated_at 2021_06_23;)