Palm mute the first 2 notes in every set of three.

4/4

     1 + 2 + 3 + 4 + 1 + 2 + 3 + 4 +
e-------------------------------------------------------------------|
B-------------------------------------------------------------------|
G--------888-666-444-----333----------------------------------------|
D--------------------444-----444-666--------------------------------|
A-------------------------------------------------------------------|
E----444------------------------------------------------------------|

You could use a synth effect if you want. Round out your sound and switch to the lower 
It plays like this through the whole song. Nice and simple until it's stuck in your head.