alert tcp $EXTERNAL_NET any -> $HOME_NET 135 (msg:"GPL NETBIOS DCERPC IActivation little endian bind attempt"; flow:established,to_server; content:"|05|"; byte_test:1,&,16,3,relative; content:"|0B|"; within:1; distance:1; content:"|B8|J|9F|M|1C|}|CF 11 86 1E 00| |AF|n|7C|W"; within:16; distance:29; flowbits:set,dce.isystemactivator.bind; classtype:protocol-command-decode; sid:2103276; rev:3; metadata:created_at 2010_09_23, signature_severity Informational, updated_at 2019_07_26;)