The qxcrhf family of files (qxcrhf.dll, qxcrhf32.dll, and the qxcrhf registry entries) appear to have been a unique creation of a common viral infection on a client's computer.
After hour after fruitless hour of battle, using every tool at my disposal, I finally found the chink in its armor. And no, that is not a racial slur. Shame on you for such thoughts!
Anyway, FileASSASSIN gets my heartfelt endorsement!
Goodbye qxcrhf, you will not be missed. May you rot in the infernal regions with all of the other random character strings created by various forms of malware. I wish I could say what trojan this was exactly, but there were at least three separate ones infecting this computer and I have a feeling that qxcrhf was a different one.