Music by Kevin MacLeod. Available under the Creative Commons Attribution 3.0 Unported license. Download link: https://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100714

MacLeod's description:

Genre: Horror
Length: 4:28
Instruments: Strings, Synths

High-pitched strings play above a low drone, while fuzzy noises and cymbal rolls flow throughout. The high strings crescendo and quickly cut out as if a knife sliced their throats. A somber melody plays in the final minute, and the noises crescendo and come at you from every angle, symbolic of an attack and a gruesome finale. 037
ISRC: US-UAN-11-00714
Dark, Eerie, Intense, Suspenseful, Unnerving 2010