If your task manager also gets disabled, DO NOT RE-RUN VIRUS SCANNERS.
First you must enable it by following this simple guide
Click Start -> Run. Type in "regedit" (no quotes) and hit Enter.
Search for HKEY_CURRENT_USER -> Software \ Microsoft \ Windows \ CurrentVersion \ Policies \ System.
Look for: DisableTaskMgr. Click on REG_DWORD. Value: 1=Enable this key (disables TaskManager); Value: 0=Disable (actually enables TaskManager)
So make sure you have set it to 0
Once set to 0, close it then ctr+alt+delete
End KZH.exe and then run your virus scanners.
Once virus scanners have finished, You may reboot your PC.
If this did not solve the problem, keep enable'ing your task manager and just deleting KZH.exe
Or, rather just virus scan while KZH.exe is in your task manager, giving it more time to be detected by your virus detectors.
Thanks