I would consider it a bass, though it has a plucky envelope shape. Try this:
Oscillator 1: Saw
Unison: 4 voices, a little wide, mess with the detune until you get the right amount of “smear”, turn off osc Start to prevent the overly-aggressive attack transient
Oscillator 2: Sine. Dial-in the Osc Mix so that Osc 2 is a little louder than Osc 1. You want that round Sine body to give it a bottom-heavy and solid sound.
Filter: Low Pass, bring the Cutoff down a bit to take off some highs.
Amp Envelope: Nudge the Attack up to get rid of the Sine pop. Create an attack transient by bringing the Sustain partway down, and setting a short Decay. Then nudge the Release up to create a very short tail.
Massive can do everything above (albeit their Unison implementation is a bit different so you’ll have to adjust for that). However, one key change that Massive will let you do, is not applying Unison to the Sine wave. This will make the Sine more solid and create a sturdy low end.