alert tcp $EXTERNAL_NET any -> $HOME_NET 139 (msg:"GPL NETBIOS SMB winreg unicode create tree attempt"; flow:established,to_server; flowbits:isset,smb.tree.connect.ipc; content:"|00|"; depth:1; content:"|FF|SMB|A2|"; within:5; distance:3; byte_test:1,&,128,6,relative; content:"|5C 00|w|00|i|00|n|00|r|00|e|00|g|00 00 00|"; within:16; distance:78; nocase; flowbits:set,smb.tree.create.winreg; classtype:protocol-command-decode; sid:2102175; rev:10; metadata:created_at 2010_09_23, signature_severity Informational, updated_at 2019_07_26;)