|The "found" folder should be in the root of the system drive, and will also have a number, for example found.000|
It will usually contain fragments of corrupted files which are not much use to you anyway since they cannot be opened. Just delete the folder.
You are wrong in saying that they are infected files. Scandisk cannot detect infected files. It can only detect files which have become corrupted owing to Windows crashing or the hard drive starting to wear out. If scandisk finds corrupted files frequently, you should fit a new hard drive.
File corruption can also be caused by faulty RAM so you may have to fit new RAM if that is the case.