alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"GPL EXPLOIT NTLM ASN.1 vulnerability scan attempt"; flow:to_server,established; http.header; content:"Authorization|3A| Negotiate YIQAAABiBoMAAAYrBgEFBQKgggBTMIFQoA4wDAYKKwYBBAGCNwICCqM"; reference:bugtraq,9633; reference:bugtraq,9635; reference:cve,2003-0818; reference:nessus,12052; reference:nessus,12055; reference:nessus,12065; reference:url,www.microsoft.com/technet/security/bulletin/MS04-007.mspx; classtype:attempted-dos; sid:2102386; rev:12; metadata:created_at 2010_09_23, cve CVE_2003_0818, signature_severity Major, updated_at 2020_04_22;)