alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED BlackHole EK Payload Download Sep 11 2013"; flow:established,to_server; urilen:>56; content:".php?"; http_uri; fast_pattern:only; pcre:"/\.php\?[^=]+=(?:[^&]?(?:3[0-2a-e8-9]|7[x-y6-7\-3]|x[b-e6-9xz]|\-[b-hy-z9]|w[wa-f6-9]|5[2-9a-e]|[47][0-2]|8[a-ez9]|2[d-j]|6[c-e])){5}&[^=]+=(?:[^&]?(?:3[0-2a-e8-9]|7[x-y6-7\-3]|x[b-e6-9xz]|\-[b-hy-z9]|w[wa-f6-9]|5[2-9a-e]|[47][0-2]|8[a-ez9]|2[d-j]|6[c-e])){10}&/U"; flowbits:set,et.exploitkitlanding; classtype:exploit-kit; sid:2017454; rev:13; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2013_09_11, deployment Perimeter, malware_family Blackhole, signature_severity Critical, tag Blackhole, tag Exploit_Kit, updated_at 2019_07_26;)