It sounds like the same sound you can get from logics bitcrusher or sylenths decimator. I can hear those "crushed" harmonics in the high end of the pluck although they're someone quiet in the mix.

It sounds like the synth has more than just one octave playing. Two octaves most likely so two oscillators. Not a whole lot going on in the high end.

Probably a decay routed to the filter cutoff as well to give it that "plucky" sound. Guessing it's a saw wave with some detune on it.

Of course I could be completely wrong.