running application as administrator on a limited user account

I have made this application that is automatically launched when a user

logs into Windows.
I would like the application to start as user administrator or system,
even when a non-privileged (limited) user logs in.
I want to do this so that a non-privileged user can not kill the
process of my application in task manager - process tab.

I also want to do this non-interactively (should be transparent to the
limited user), so the limited user should not be prompted for password
or something like that.

Is there any way to do this?

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