What species of beetle is this?

Do you guys know what species this beetle is?
http://imgur.com/Qwccb.jpg

When I was a teenager, these little buggers used to fly into my room every once in a while, only to come to rest on my table. I think it’s the light that attracts them. These small beetles are about the size of one end of a cottonbud. They’re actually fine with things if I decide to use my index finger to pat or stroke them.

It’d be nice though, if I knew exactly what species they are. After a long hiatus, one of them has flown into my room and come to rest on my sleeve. The only difference is that the ones I saw during my teenage years were olive-brown in colour, and this one is dark brown instead. Do any of you guys know what sort of creature they are? It might help to know that I live in Southeast Asia, near the equator.