God she's so talented and good looking as well. She shits all over these other girls.
Like Sick Wit It said, that synth sound, sounds like it CAN be made with pretty much any analog synth.
If your looking for a VSTi, maybe check out the "Arturia Jupiter-8V." It's an emulation of that actual hardware synth.
arturia.com/evolution/en/products/jupiter-8v/intro.html
Looks good.