alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Possible JKDDOS download 500.exe"; flow:established,to_server; content:"GET"; nocase; http_method; content:"/500.exe"; nocase; http_uri; reference:url,asert.arbornetworks.com/2011/03/jkddos-ddos-bot-with-an-interest-in-the-mining-industry; classtype:trojan-activity; sid:2012456; rev:3; metadata:created_at 2011_03_10, confidence Medium, signature_severity Major, updated_at 2019_07_26;)