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Reports are out on another even more dangerous iOS malware in the wild - Masque Attack. Masque Attack shows that Apple's ban of the WireLurker infected apps have been ineffective as Masque Attack is utilizing the same provisioning loophole that WireLurker used. The vulnerability exists because iOS doesn't enforce matching certificates for apps with the same identifier. Apple unfortunately has a history of being slow to patch security flaws, so the fact that this loophole has yet to be patched is not surprising. The real question is how many more copycat infections will be out there before Apple does get the patch released... WireLurker required the user to download the infected app to their computer and then attach their iOS device via USB to infect the iOS device. Masque Attack skips that overly complicated step and infects iPhones and iPads when the user visits infected webpages and agrees to install a new app. So there is a moment where the user could say no to that new app and stay safe, but... The Masque Attack infected app can replace any app on the iPhone or iPad, excluding those pre-installed by Apple. This includes banking, email or any other third party app. Once the user inputs their credentials into the replaced app the information is sent to the malware's creators. Now here's the kicker to Masque Attack, and this one really should irritate you, Security Firm FireEye reported the discovery of this malware to Apple on July 26th. Three months plus and no patch. According to FireEye the latest iOS 8.1.1, which is in beta, is still vulnerable. One surprising "feature" FireEye discovered is that the infected replacement apps could get access to the data from the original apps. In one of their tests, FireEye "used an in-house app with a bundle identifier 'com.google.Gmail' with a title 'New Flappy Bird'. When FireEye "installed this app from a website, it replaced the original Gmail app on the phone." And just like that your iOS device is infected. See below for the image and details showing how FireEye tested this malware. Images from FireEye Masque Attack Experiment Details from FireEye - "Figure 1 illustrates this process. Figure 1(a) (b) show the genuine Gmail app installed on the device with 22 unread emails. Figure 1(c) shows that the victim was lured to install an in-house app called “New Flappy Bird” from a website. Note that “New Flappy Bird” is the title for this app and the attacker can set it to an arbitrary value when preparing this app. However, this app has a bundle identifier “com.google.Gmail”. After the victim clicks “Install”, Figure 1(d) shows the in-house app was replacing the original Gmail app during the installation. Figure 1(e) shows that the original Gmail app was replaced by the in-house app. After installation, when opening the new “Gmail” app, the user will be automatically logged in with almost the same UI except for a small text box at the top saying “yes, you are pwned” which we designed to easily illustrate the attack. Attackers won’t show such courtesy in real world attacks." You have to love the extra bit of humor FireEye showed in their test. "yes, you are pwned" :) The same preventative measures hold true from WireLurker to Masque Attack: Don't install apps from third-party app stores Don't click "Install" from any popups found on webpages If you ever have "Untrusted App Developer" appear, click "Don't Trust" and either abort the install or uninstall that app immediately

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