alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Trojan.BlackRev Download Executable"; flow:established,to_server; content:"/gate.php?cmd=getexe"; http_uri; fast_pattern:only; pcre:"/\/gate\.php\?cmd=getexe$/U"; content:!"Referer|3a 20|"; http_header; reference:url,ddos.arbornetworks.com/2013/05/the-revolution-will-be-written-in-delphi/; classtype:trojan-activity; sid:2016901; rev:5; metadata:created_at 2013_05_21, signature_severity Unknown, updated_at 2019_07_26;)