alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Nuclear Exploit Kit exe.exe Payload"; flow:established,to_client; http.header; content:"Content-disposition|3a 20|attachment|3b 20|filename=exe.exe"; fast_pattern; reference:url,www.malware-traffic-analysis.net/2014/08/06/index.html; classtype:exploit-kit; sid:2018914; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2014_08_08, deployment Perimeter, malware_family Nuclear, signature_severity Critical, tag Exploit_Kit, tag Nuclear, updated_at 2020_05_01;)