alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Potential Blackhole Exploit Pack landing"; flow:established,to_server; content:".php?f="; http_uri; content:!"Cookie|3a|"; http_header; pcre:"/\.php\?f=\d+$/U"; reference:url,krebsonsecurity.com/2010/10/java-a-gift-to-exploit-pack-makers/; classtype:bad-unknown; sid:2012688; rev:7; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2011_04_15, deployment Perimeter, malware_family Blackhole, signature_severity Critical, tag Blackhole, tag Exploit_Kit, updated_at 2019_07_26;)