I can run processes with a specific
TrustLevel like this:
RunAs /TrustLevel:0x20000 process.exe
But, how do I find out the
TrustLevel of a process that is already running? Is there any app available which can show this info?
The trustlevel parameter is a legacy thing that is related to software restriction policies (SRP) in Group Policy. It allowed an administrator to run a otherwise blocked program.
SRP used to have three levels: restricted, unrestricted and "default user". The "default user" setting was retired with Windows Vista, so this parameter isn't useful anymore, and there's only one trustlevel available anymore.
Please note that the trustlevel does not relate to UAC integrity levels.