Recently I've noticed some suspicious activity on the server and removed a virus (from what I gathered it was MPK). I caught it on time and it didn't do any damage. One of the things that it did is messed up permissions and now I can't start ESET service or run malwarebytes or KAV... I understand that it somehow messed up security permissions (I think files and regs). As a result I can't use sfc or dism to fix problems.
Is there a way to restore permissions?