alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Potential Blackhole Exploit Pack Binary Load Request 2"; flow:established,to_server; content:".php?e="; fast_pattern; nocase; http_uri; content:"&f="; nocase; http_uri; content:!"Referer|3a|"; http_header; content:"User-Agent|3a|"; http_header; content:"Host|3a|"; http_header; distance:0; pcre:"/\.php\?e=\w+&f=\w+$/U"; flowbits:set,et.exploitkitlanding; reference:url,krebsonsecurity.com/2010/10/java-a-gift-to-exploit-pack-makers/; classtype:bad-unknown; sid:2013550; rev:6; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2011_09_08, deployment Perimeter, malware_family Blackhole, signature_severity Critical, tag Blackhole, tag Exploit_Kit, updated_at 2019_07_26;)