Kaspersky has reported that a new previously undetected variant of the MaControl backddor is being used in the wild. The malware arrived as an email attachment, and if installed connect to a C&C server. More information on the malware, its behaviour, and the attack campaign is available from Kaspersky, who discovered this variant. As more malware authors become motivated to attack OS X it is likely that we will continue to see targeted attacks such as this in the future.

http://www.kaspersky.com/about/news/virus/2012/New_Mac_OS_X_Backdoor_Being_Used_for_an_Advanced_Persistent_Threat_Campaign

http://www.securelist.com/en/blog/208193616/New_MacOS_X_backdoor_variant_used_in_APT_attacks

Cheers,
Adrien de Beaupré
Intru-shun.ca Inc.

I will be teaching SANS Sec542 in Minneapolis July, Sec560 in Montreal September, and Sec542 in Vancouver December.