It is also somewhat silly to rely on an AV or scanner program to verify a known-suspicious file as clean.
I haven't used CCleaner for a couple years- It doesn't seem to do much that isn't handled beyond the built in Disk Cleanup, and that which it does usually only amount to less then a megabyte of saved space, which might have mattered on an HDD back when t hey used to be called "Winchester drives" but not so much nowadays.
