Posted July 23, 200816 yr While looking into system perfomance, i found a folder with 400,000+ 384 byte files, each with a guid as filename. there is one other file alongside folder s-1-5-19 called CREDHIST the folder is c:\documents and settings\localservice\application data\microsoft\protect\s-1-5-19\ it shows as size 163MB, on disk 1.77GB creation date april 2008 it causes problems with search and virus scan although a dos scan reports it and its contents to be clean. (mcafee) i alkso have windows defender installed and it does not report any problems. the folder i found originally was c:\documents and settings\localservice\application data\microsoft\media centre\protect\s-1-5-19\ but i deleted that to see what would happen and the first named folder appeared in its place. i am concerned that this is a trojan of some sort. however, it is possible that it is a genuine microsoft system folder since s-1-5-19 is a localservice id. can anyone shed some light please?
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