The Conficker worm is finally doing something–updating via peer-to-peer between infected computers and dropping a mystery payload on infected computers, Trend Micro said on Wednesday. Researchers were analyzing the code of the software that is being dropped onto infected computers but suspect that it is a keystroke logger or some other program designed to steal sensitive data off the machine, said David Perry, global director of security education at Trend Micro. The software appeared to be a .sys component hiding behind a rootkit, which is software that is designed to hide the fact that a computer has been compromised, according to Trend Micro.