The base is original from the producer (chords and melodies), but is complemented with elements that complement the song that come from samplepacks, usually, vocal chops, guitars, wobbles sections, glitch effects. It is the standard in which most of producers work, in a project you will find MIDI files made by the producer, but also melodic loops.
Drums are from Nexus and sample.
The bass and instruments are come from one shot sample and Nexus.
The track contains a melodic loop from a sample pack (Ac Guitar chord).
Except this loop, the other melodies and midi’s are fully original.
Sample pack Vengeance Essential Clubsounds Vol. 4
Loop name VEC4 Acoustic Pop Guitar 26 140BPM Emaj