Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Possible Nuclear EK Landing Nov 17 2015"; urilen:>51; flow:to_server,established; content:"_id="; http_uri; content:"_id="; distance:0; http_uri; pcre:"/^\/(?:[a-z0-9]+\/)?[^\x2f]+\?[a-z]{1,40}_id=\d{2,5}?&[a-z]{1,40}_id=\d{2,5}&[^&\x3d]+(?<!_id)=(?=[a-zA-Z0-9]+(?:[A-Z][a-z][A-Z]|\d[a-z][A-Z]|[A-Z]\d[A-Z]|[A-Z\d]{3}[a-z]))(?=[A-Fa-f0-9]*?[G-Zg-z])(?=[a-z0-9]*?[A-Z])(?=[A-Z0-9]*?[a-z])[A-Za-z0-9]{32}\x2e{0,2}$/U"; content:!"|0d 0a|Cookie|3a|"; flowbits:set,NuclearEK; classtype:exploit-kit; sid:2022112; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2015_11_17, deployment Perimeter, malware_family Nuclear, confidence Medium, signature_severity Critical, tag Exploit_Kit, tag Nuclear, updated_at 2019_07_26;)