alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET POLICY REG files version 5 Unicode download"; flow:established; content:"W|00|i|00|n|00|d|00|o|00|w|00|s|00| |00|R|00|e|00|g|00|i|00|s|00|t|00|r|00|y|00| |00|E|00|d|00|i|00|t|00|o|00|r|00| |00|V|00|e|00|r|00|s|00|i|00|o|00|n|00| |00|5|00|.|00|0|00|0|00|"; content:"|0D 0A|"; content:"[|00|"; content:"H|00|K|00|E|00|Y|00|_|00|"; nocase; reference:url,www.ss64.com/nt/regedit.html; classtype:misc-activity; sid:2000422; rev:10; metadata:created_at 2010_07_30, confidence High, signature_severity Informational, updated_at 2019_07_26;)