alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"GPL EXPLOIT CodeRed v2 root.exe access"; flow:to_server,established; http.uri; content:"/root.exe"; nocase; reference:url,www.cert.org/advisories/CA-2001-19.html; classtype:web-application-attack; sid:2101256; rev:11; metadata:created_at 2010_09_23, signature_severity Major, updated_at 2020_04_22;)