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More Trojan Malware Found On Macs

April 23, 2012 by  
Filed under Computing

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Following the outbreak of the Flashback Mac Trojan, security researchers have identified two more cases of Mac OS X malware. The good news is most Mac owners have little reason to worry about them.

Both cases are variants on the same Trojan, called SabPub, Kaspersky Lab Expert Costin Raiu wrote on Securelist.

The first variant is known as Backdoor.OSX.SabPub.a. Like Flashback, this new threat was likely spread through Java exploits on Websites, and allows for remote control of affected systems. It was created roughly one month ago.

Fortunately, this malware isn’t a threat to most users for a few reasons: It may have only been used in targeted attacks, Raiu wrote, with links to malicious Websites sent via e-mail, and the domain used to fetch instructions for infected Macs has since been shut down.

Furthermore, Apple’s security update for Flashback helps render future Java-based attacks harmless. In addition to removing the Flashback malware, the update automatically deactivates the Java browser plug-in and Java Web Start if they remain unused for 35 days. Users must then manually re-enable Java when they encounter applets on a Web page or a Web Start application.

The second SabPub variant is old-school compared to its sibling. Instead of attacking through malicious Websites, it uses infected Microsoft Word documents as vector, distributed by e-mail.

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