Ok here is some info for the track:

It is in C# minor throughout. The main riff goes:

C#5 C#5/A B5 B5/A#

The C# minor Aeolian can be played over the first three chords, but on the B5/A# the A# note clashes with the aeolian scale so the C# Dorian scale should be used. It's just one note different.