Mac Security Update Leaves Users Open To Ugly Flashback

snoopy · Sep 29, 2011

Mac security update leaves users open to ugly Flashback

By Dan Goodin in San Francisco •
27th September 2011 20:16 GMT

Apple has updated the malware protection built into its Mac operating system to flag a recently discovered trojan that hijacks users' machines by masquerading as a benign document. Malware disguised as an Adobe Flash installer, meanwhile, remained unchecked.

The file quarantine, which Apple snuck into a prerelease version of Snow Leopard in 2009, was updated to include a definition for Trojan-Dropper: OSX/Revir.A, which antivirus provider F-Secure disclosed on Friday. According to an update on F-Secure's blog, the malware disguises itself as a PDF file in an attempt to trick users into clicking on it.

“The malware then proceeds to install a backdoor, Backdoor:OSX/Imuler.A, in the background,” stated the F-Secure analysis, which was posted Monday. “As of this writing, the C&C of the malware is just a bare Apache installation and is not capable of communicating with the backdoor yet.”
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Details plus screenshot - http://www.theregister.co.uk/2011/09/27/apple_updates_mac_malware_protection/

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