Malware on the ubiquitous Apple platform has always been scoffed at by Mac users, and it was fair enough really. There weren’t a whole lot of Mac users so the effort to develop malware for the Mac platform really wasn’t worth it.
The platform has exploded though with Macs being the weapon of choice for all the hipsters and yuppies out there, we wrote about Apple Struggling With Security & Malware back in 2009.
In 2010 we saw Sophos Launch a FREE Anti-Virus Software For Mac and in 2011 we saw a JAVA based cross platform trojan that also effected Mac machines.
Apple — and many Mac users — argue that Mac OS X has a special recipe for security that makes it less likely to be infected with malware. Many security researchers counter that the Mac’s seeming immunity stems not from its security, but from its lack of market share.
The debate may finally be settled. The emergence of a serious malware construction kit for the Mac OS X seems to mimic a 2008 prediction by a security researcher. The prediction comes from a paper written in IEEE Security & Privacy, which used game theory to predict that Macs would become a focus for attackers as soon as Apple hit 16 percent market share.
Last week, security researchers pointed to a construction kit for creating Trojans for the Mac OS X as a major issue for Mac users. Currently, three countries — Switzerland, Luxembourg and the United States — have Mac market share around that level.
“The kit is being sold under the name Weyland-Yutani Bot and it is the first of its kind to hit the Mac OS platform,” Peter Kruse, partner and security specialist at security firm CSIS, writes in a blog post. “CSIS finds this crimekit to be quite disturbing news since Mac OS previously to some degree has been spared from the increasing amount of malware which has haunted Windows-based systems for years.”
The prediction in the paper was that Mac would start being targeted when they reached a 16% market share, which has happened recently in 3 countries. There is not a trojan creation kit targeting Mac OSX – this makes threats on the platform a reality.
The original paper can be found here – j3attAO.pdf
The fact is that Mac users probably still don’t run anti-virus software because they don’t believe they need to, these threats could spread fast.
Weyland-Yutani Bot, named for the corporation in the 1979 movie Alien, is currently being sold by its developers. While it is not the first attack on the Mac OS X, crimeware has enabled criminals in the past to scale up attacks quickly.
“What is happening is that people are testing the waters,” says Adam O’Donnell, chief architect of the cloud technology group at SourceFire and the author of the 2008 paper. “It just becomes economically viable to do it, so you start seeing these attacks becoming more common.”
The 2008 paper used game theory to calculate when attackers would start seeing a payoff in focusing on the Mac OS X over Windows. It simplified the problem by assuming that all PC users ran antivirus software and that no Mac users did. The assumptions helped reduce the problem down to two factors: the effectiveness of the defenses and the marketshare of the dominant platform.
With detection rates for antivirus in the 80 percent range, the Mac OS X becomes an attractive target around 16 percent marketshare. If PC defenses are better than 80 percent, then the Mac market share at which attackers become interested drops. For example, if antivirus programs detect attack 90 percent of the time, then attackers will focus on the Mac OS X at approximately 6 percent marketshare, says O’Donnell.
“It is much more of an argument that at the low rates of penetration of the Mac in the market is why there is no malware,” he says. “You get a few points up, and like we are seeing now, you will start seeing malware.”
But even still, with AV software installed doesn’t make your computer the bastion of security. AV software still works on a reactive basis, there still is no real proactive security. AV heuristics are crap, they don’t detect anything.
Signatures still need to be updated and pushed out, and can be avoided. Especially by morphing software, the new generations of trojan and bot software are much more advanced than any AV system.
Source: Network World
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