Kies wifi
I have/had the same problem, just didn't know it. My new mbp started getting only about 2 hrs battery life on full charge, and getting really hot; contacted Apple, and scheduled Genius Bar appt.
At Genius Bar, this app (Kies wifi) doesn't show up on activity monitor, but battery was draining really fast (about 5% in 5 minutes), with no active windows open.
Apple rep gave me new battery, and off I went. Turn on my mbp this AM to cycle once the new battery, when I check activity monitor and KiesWiFi is eating 99% of battery and I'm actually watching my battery percentage tick down from 96% to 88% in seconds.
I tried removing app (and all files) with 'AppCleaner', had to do it about three times before I actually just stopped it via Activity Monitor. Restarted my mbp, no more KiesWiFi. Don't know why it was doing what it was doing, but I got rid of it. I don't even remember downloading this app. I have the TMobile Samsung Galaxy S2, so I might have connected phone via BlueTooth to send pictures and software was downloaded.
P.S. All mentioned positive apps, from Apple app store.