(Luckily, Macs running 10.7 Lion don’t have Java installed by default, and those who have installed all available Java updates in either Lion or 10.6 Snow Leopard are immune from First, it attempts to install code on your Mac silently through one of two known Java vulnerabilities. Such attacks.) Failing that, Flashback next attempts to download and run a Java applet that displays a self-signed certificate purporting to be from Apple Inc. if you were to click the Continue button, you’d be giving the applet permission to run and your Mac would be infected. It’s clear that Flashback is in active development, not just from the arrival of this new attack vector, but because it intentionally tries to avoid detection. Some variants check to see if the user is running Mac OS X in VMware Fusion and won’t execute if so. They do this because many security researchers test malware in virtual machines, rather than risk infection of full installations of Mac OS X, since it’s easier to delete a virtual machine and start over with a clean copy. The most recentįlashback.G variant won’t even attempt to install if Intego’s VirusBarrier X6 or certain other security programs are present, presumably since there’s no point in bothering with Macs that are already protected. Infection Effects - Flashback’s goal is to capture user names and passwords, which it accomplishes by inserting its code into Web browsers like Safari and Firefox and other network applications like Skype. It monitors network traffic and looks for connections to a number of domains - sites such as Google, Yahoo, CNN, PayPal, numerous banks, and many others. Presumably, the bad guys behind Flashback are looking for user names and passwords that they can exploit immediately - such as for a bank Web site - and those that may be reused across different sites. (Tip #2: Don’t use the same password for all Web sites!)īecause Flashback’s code can interfere with its host programs, it tends to cause crashes. If a network-related program starts crashing regularly, that may be a clue that your Mac has been infected.įlashback needs both a way to transmit these stolen login credentials back to the mothership and a method of updating its code. It does this via a set of command and control servers that were initially inoperable when Intego discovered Flashback in late September 2011. They were brought online at some point in October 2011 and have been sending updates to infected Macs since. In theory, Flashback can also download additional software, although Intego hasn’t yet seen such activity.Įxactly what code Flashback installs on infected Macs has changed over time. #VIRUSBARRIER EXPRESS PARA MAC INSTALL#Īt first, it installed a dynamic loader library and auto-launch code into a file at ~/Library/Preferences/Preferences.dylib.#VIRUSBARRIER EXPRESS PARA MAC MAC OS X#.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |