alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET DELETED Blackhole Try Prototype Catch May 14 2012"; flow:from_server,established; content:"try{"; content:"=prototype|3b|}catch("; within:30; classtype:trojan-activity; sid:2014747; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2012_05_14, deployment Perimeter, malware_family Blackhole, signature_severity Critical, tag Blackhole, tag Exploit_Kit, updated_at 2019_07_26;)