Right, so this is my first tab, it works for me.

Tuning: Standard
A little bit of delay

Riff 1
e|--5-----5--5-----|
B|----5~---5--5----|
G|-----------------|
D|-----------------|
A|-----------------|
E|-----------------|

Riff 2
e|--7-----7--7-----|
B|----5~---5--5----|
G|-----------------|
D|-----------------|
A|-----------------|
E|-----------------|

The song basically consists of riff 1, with riff 2 every now and then, listen to it to get the idea.