It's the chord sequence.
First one is based on a chromatic decending bassline e.g. F E Eb D C# etc then finding chords that fit over that like Fm -> C ->Eb -> D dim etc
Not so sure on the second but like the first it's also got a minor root chord and a major V chord (Fm and C in the key of F minor). These chords are very common in western classical music, but less so in pop because pop and EDM because EDM writes everything using the notes from the natural minor scale, which only contains the notes for a minor V chord (Cm in F minor)