You need to rewire ASIO output from Cubase into an microphone input of an windows driver internally using some sort of audio loopback driver and enable “listen to this device” in the microphone preferences. I cannot provide you with any names for the loopback driver, as my audio interface has this feature built in and I have no need for use of any 3rd party software.
I did this with teamviewer and it works, though there is some latency.