I've tried to google it. All references about that dll pointed to Phyton programming.
It happened just two days after my computer crashed and I needed to do a "clean reinstall" of Windows 8.
I was always using Sandboxie as THE BEST PROTECTION while on-line, but after a fatal crash of my Windows 8, I was afraid to install ANY THIRD PARTY programs; therefore, I was left only with mediocre MSE protection and HIGHLY advertised ELAM.
Next, I downloaded XYplorer - a missing tool for advanced Windows users - and manually deleted that .dll file.
After that, no more problems with CCleaner.
To sum up.
If not for CCleaner freezing up my computer, only with Microsoft-made tools, I would have not had ANY information or chance to remove that "bad" file.
Disclaimer from Microsoft :Using Third Party Software is at your own risk.
I'd say, using ONLY software from Microsoft will put you at risk.