Vulnerabilities / Threats
5/3/2011
02:53 PM
50%
50%

Apple Macs Targetted By Crimeware Toolkit

The OSX operating system now faces botnet software as well as a fake antivirus campaign launched via Google image searches on Osama Bin Laden.

Malware aimed at Macs has unexpectedly spiked in the early days of May. For starters, security experts are warning that the first-ever automated do-it-yourself crimeware kit that targets Apple OS X computers is now for sale on underground forums.

"Detailed information about this crimeware kit is not being leaked publicly and the authors of the kit are obviously trying to stay below the radar, allowing only vetted users of the forums to see most of the content," according to a Tuesday blog post from Peter Kruse, partner and security specialist at Danish information security firm CSIS Security Group. The crimeware toolkit is marketed as "Weyland-Yutani BOT" and retails for $1,000. Its creators have also promised forthcoming versions for Linux and the iPad.

Based on videos obtained by CSIS, Kruse said that the toolkit appears to be fully operational. "In the same way as several other DIY crimeware kits designed for PCs, this tool consists of a builder, an admin panel, and supports encryption," he said. "The Weyland-Yutani BOT supports Web injects and form grabbing in Firefox; however both Chrome and Safari will soon follow. The webinjects templates are identical to the ones used in Zeus and [SpyEye]."

Kruse said the emergence of an advanced crimeware toolkit that targets Macs is "quite disturbing news since MacOS previously to some degree has been spared from the increasing amount of malware which has haunted Windows-based systems for years."

Interestingly, on Tuesday, security software vendor Intego issued another Apple-related security warning, in this case for "MACDefender," which is new fake antivirus software that targets Apple users. Also known as fake AV or scareware, such software pretends to be legitimate antivirus software, but in fact is fake software designed to con users into paying for it. Like much scareware, MACDefender spreads via poisoned search engine results, including searches relating to the death of Osama bin Laden.

According to a post to the SANS Internet Storm Center from Rob VandenBrink, a senior consulting engineer at Canadian consulting company Metafore, some users are reporting that the software demands $99 upon installation, payable immediately via PayPal.

The scareware file arrives as a compressed zip file containing a JavaScript executable. VandenBrink warned that "if you have 'Open Safe files after downloading' enabled in Safari, downloading this file will auto-install this code."

According to Intego's security advisory, the risk posed by MACDefender is relatively low, and while the scareware is circulating in the wild, it's doing so in relatively small quantities.

That said, the software does a good job of disguising itself as the real deal. Furthermore, the malware can also make a major nuisance of itself. "MACDefender also opens Web pages for pornographic websites in the user's Web browser every few minutes. This is most likely to make users think that they are infected by a virus, and that paying for MACDefender will relieve them of the problem," said Intego.

While the software is relatively harmless, it's interesting because to date no scareware creators have bothered to target Apple OS X computers. "In the past, these types of sites--very common vectors of Windows malware--only delivered Windows .exe applications," said Intego. "The fact that such a site is providing a Mac rogue antivirus is new, and extremely rare. While the site itself still shows a fake Windows screen, the rogue antivirus itself is a well-designed Mac application."

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
White Papers
Cartoon
Current Issue
Flash Poll
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2013-2184
Published: 2015-03-27
Movable Type before 5.2.6 does not properly use the Storable::thaw function, which allows remote attackers to execute arbitrary code via the comment_state parameter.

CVE-2014-3619
Published: 2015-03-27
The __socket_proto_state_machine function in GlusterFS 3.5 allows remote attackers to cause a denial of service (infinite loop) via a "00000000" fragment header.

CVE-2014-8121
Published: 2015-03-27
DB_LOOKUP in nss_files/files-XXX.c in the Name Service Switch (NSS) in GNU C Library (aka glibc or libc6) 2.21 and earlier does not properly check if a file is open, which allows remote attackers to cause a denial of service (infinite loop) by performing a look-up while the database is iterated over...

CVE-2014-9712
Published: 2015-03-27
Websense TRITON V-Series appliances before 7.8.3 Hotfix 03 and 7.8.4 before Hotfix 01 allows remote administrators to read arbitrary files and obtain passwords via a crafted path.

CVE-2015-2157
Published: 2015-03-27
The (1) ssh2_load_userkey and (2) ssh2_save_userkey functions in PuTTY 0.51 through 0.63 do not properly wipe SSH-2 private keys from memory, which allows local users to obtain sensitive information by reading the memory.

Dark Reading Radio
Archived Dark Reading Radio
Good hackers--aka security researchers--are worried about the possible legal and professional ramifications of President Obama's new proposed crackdown on cyber criminals.