The recent Thor: The Dark World film is about the dark elves' attempt to take over the nine realms.
If you enjoyed this film you might want to pick up the current Thor: God of Thunder series, which sees the return of Malekith (leader of the dark elves and rather prominent in the film) as he tries to take over the nine realms. This story arc started with issue 13 which, with issue 14 only just out, is still very new - so it should be easy to find hard copies of both issues. If you can't find hardcopies - or if you prefer digital copies - you can also pick up the series on Comixology.
Thor: God of Thunder has so far been a great series. The previous arc dealt with a god killer named Gorr and 3 versions of Thor: one from long ago who was still young and belligerent; one from the present day who is a member of the Avengers; and one from near the end of time, who has replaced Odin as the Allfather of the Gods. As these three Thors battle across space and time, trying again and again to defeat Gorr, we are treated not only to absolutely gorgeous art by Esad Ribic, but we also get to see the Thors quaffing lots of ale and occasionally hitting each other in the face with space sharks. And sometimes, my dear readers, that is exactly what superhero comics should be about. The series to date can be bought on Comixology.