some vst drum synthesizers allow you to do so... for example microtonic by Sonic charge... but I absolutely don't know how to do that with the virus... i am not a good drum sounds designer!
anyway maybe you experience that problem because the kick drum has too little low end... or the envelope has not enough decay and sustain... to set the correct pitch you should before try to hear a bassy sound from the kick...
then you could try to adjust the pitch via the pitch knob...