alert tcp $EXTERNAL_NET any -> $HOME_NET 139 (msg:"GPL NETBIOS SMB NTLMSSP invalid mechlistMIC attempt"; flow:to_server,established; content:"|FF|SMBs"; depth:5; offset:4; nocase; content:"`"; depth:1; offset:63; content:"|00 00 00|b|06 83 00 00 06|+|06 01 05 05 02|"; within:15; distance:1; content:"|06 0A|+|06 01 04 01 82|7|02 02 0A|"; distance:0; content:"|A3|>0<|A0|0"; distance:0; reference:bugtraq,9633; reference:bugtraq,9635; reference:cve,2003-0818; reference:nessus,12052; reference:nessus,12054; reference:nessus,12065; classtype:attempted-dos; sid:2102384; rev:11; metadata:created_at 2010_09_23, cve CVE_2003_0818, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)