OSX/DevilRobber is malware delivered to OS X computers bundled with pirated software on the popular PirateBay [1]. Its primary purpose appears to be BitCoin mining and stealing, although it also has capabilities for general data harvesting and user spying [2].

References:

1. https://www.f-secure.com/v-descs/backdoor_osx_devilrobber_a.shtml
2. http://appleinsider.com/articles/11/10/31/new_mac_os_x_trojan_horse_spies_steals_and_requisitions_gpu_for_bitcoin_mining