I have found a file on my USB stick and my phone called "IndexerVolumeGuid" that i have no idea what is for. I have searched everywhere on the Internet via Google and have found no concrete information on it. some say it could be a virus while others say it's a System restore file. I am more inclined to be believe the latter, but it exhibits odd behavior for a regular file. According to what i read, it will copy itself to portable devices that are plugged into the computer. Then you delete it and it reloads itself the next time the drive is plugged in. It seems the only way to actually disable this is to go and disable System restore itself.
What is this file? Is it innocent, is it a virus?
I forgot to mention that it shows up in a folder called "System volume information".