alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Nuclear EK JAR URI Struct Nov 05 2013"; flow:established,to_server; content:"/14"; fast_pattern:only; http_uri; content:"Java/1."; http_user_agent; pcre:"/\/14\d{8}(?:\.jar)?$/U"; flowbits:set,et.exploitkitlanding; classtype:exploit-kit; sid:2017666; rev:11; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2013_11_05, deployment Perimeter, malware_family Nuclear, confidence High, signature_severity Critical, tag Exploit_Kit, tag Nuclear, updated_at 2019_07_26;)