A Windows Trojan has been adapted to infect Mac OS machines, according to the latest report by a security firm Sophos. The malware is being under development to set a backdoor on Macs with hackers behind the scheme seeking for potential buyers.

The author called the malware BlackHole RAT while security experts dubbed it as MusMinim. It is a version of Windows Trojan called darkComet. Net security firm Sophos describes the malware as "very basic", while even its author characterizes the malware as a work in progress.

The Trojan can shut down infected machines, running arbitrary shell commands, placing text on a desktop and otherwise messing with victims. However, its main function would appear to be the generation of fake "Administrator Password" pop-ups in an apparent attempt to trick users into handing over their login credentials.

Sophos notes that the malware makes machines to display a default message when reboot is initiated making it clear that systems are infected.

Sophos said that once fully developed the malware may be disguised as pirate software or games downloads and distributed through wares portal or torrent downloads.