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June 17th, 2013

Android:Obad – malware gets smarter – so does AVAST

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If you had the privilege to meet Android:Obad, which Kaspersky earlier reported to be the “most sophisticated android malware,” you are in a real bad situation and this will probably be the moment to which you’ll be referring to in the future as “The time I learned the hard way what better-safe-than-sorry means.” A few days ago we identified a new variant of that threat. There is a chance you bumped into this bad guy before we started detecting it, because if our generic detections don’t catch the malware there is always a short delay before it gets to us. In most cases, it isn’t a problem to get rid of a malicious app – you just uninstall it after you find it. This time, that won’t work.

The problem we are facing here is called “Device administrator.” After you launch an app infected with Android:Obad, you will be asked to make the app the current device administrator, which will be only a few buttons away so it isn’t hard to do. After you do so, there is no way back because this piece of malware uses a previously unknown vulnerability which allows it to get deeper into the system and hide itself from the device administrator list – the only place you can manage device administrators. You won’t be also able to uninstall the app via Settings, because all the buttons will be grayed out and will not function.

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Lucky for you, avast! Mobile Security will save you from doing a factory reset and losing your data, which certainly is one of the solutions. But don’t worry, you are safe with us. Read more…