alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Sundown EK Flash Exploit Apr 20 2015"; flow:established,to_server; http.uri; content:"/bad/"; fast_pattern; content:".swf"; endswith; pcre:"/\/bad\/[A-Z0-9]+\.swf$/"; classtype:exploit-kit; sid:2020951; rev:5; metadata:created_at 2015_04_21, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_17;)