It did recently. I had a USB drive with many folders and sub-folders. One of the folders had many sub-folders and text files, Word and Excel documents, and image files.
I had a shortcut for the folder on my desktop (Windows 10). One fine morning, the folder shortcut was replaced with a file. I am not sure if it happened during a Windows Automatic Update event. This file turned out to be a binary file with many Chinese characters among many other characters.
I tried Microsoft help and it did not amount to anything. The staff who came to me was not of much help. He did say that he has had the same experience and concluded that it was some corruption of the file system. Very much like GP"s saying it is a viral infection. NOTHING CAN BE DONE.
It is also reported by others besides my experience.