Malware and Group Policy

Hello.

Since I have implemented group policy rules in my PC, I have a few questions, to see if the changes are justified: Is malware capable of:

  1. bypassing group policy rules while running under a standard user account?
  2. bypass group policy rules while running in elevated mode?
  3. deactivating/activating group policy settings automatically or via a script if run with administrative privileges?

Thank you.