alert tcp $EXTERNAL_NET any -> $HOME_NET 135 (msg:"GPL NETBIOS DCERPC IrotIsRunning attempt"; flow:established,to_server; flowbits:isset,smb.tree.bind.irot; content:"|05|"; byte_test:1,!&,16,3,relative; content:"|00|"; within:1; distance:1; content:"|00 02|"; within:2; distance:19; byte_test:4,>,128,0,relative; reference:bugtraq,6005; reference:cve,2002-1561; reference:url,www.microsoft.com/technet/security/bulletin/MS03-010.mspx; classtype:protocol-command-decode; sid:2103238; rev:4; metadata:created_at 2010_09_23, cve CVE_2002_1561, signature_severity Informational, updated_at 2019_07_26;)