alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT DRIVEBY Nuclear EK Landing Sep 29 2014"; flow:from_server,established; file_data; content:"|28 2f 5b 40 5c 2a 5c 2d 5d 2f 67 2c 27 27 29|"; fast_pattern; content:"return"; pcre:"/^\s[^\r\n]*?[\x28\x5b]\s*?[\x22\x27][^\x22\x27]?s[^\x22\x27]?u[^\x22\x27]?b[^\x22\x27]?s[^\x22\x27]?t[^\x22\x27]?r[^\x22\x27]?[\x22\x27]\s*?[\x29\x5d]\s*?(?:\x5d\s*?)?\x28/R"; classtype:exploit-kit; sid:2019315; rev:8; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Any, attack_target Client_Endpoint, created_at 2014_09_30, deployment Perimeter, malware_family Nuclear, confidence High, signature_severity Critical, tag DriveBy, tag Exploit_Kit, tag Nuclear, updated_at 2019_10_08;)