The fault in your logic, fairnooks, lies in the fact the upper case letter C normally represents the letter assigned to the partition/drive containing the OS, as it does in my computer. I can safely safe with confidence, there is no partition/drive with the lower case letter "c" assigned. I thereby concluded no such path can, or does, exist in my computer. So I would say it's still something of a mystery.
Does anyone else have anything even similar to this in their installation of Malwarebytes?
Raybro