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I have a bunch of random two-letters folders on my G: drive. When I remove them, nothing bad happens but they are created after some time. Their names are hexadecimal ([0-9a-f]{2}).

There are binary "*.file" files inside them, each with a name that reminds me of a md5 hash.

An example:

i@r590 /cygdrive/g
$ ls -R ??


I tried:

$ file ff480955a23f938607eee5787f3f73ae2c692a1c.file
ff480955a23f938607eee5787f3f73ae2c692a1c.file: data

And also:

$ strings (file)

But nothing meaningful comes up.

What process might have created them? Or, if you don't know, how to monitor this in Windows?

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1 Answer 1

I don't know what is creating them, however I can help you find out what is.

If you run Process Monitor you can set the filter to show whenever any file ending in the .file extension is created/accessed.

enter image description here

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