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Posts Tagged ‘Obfuscation’

We have been fighting the W32.Changeup family of worms for a long time and have written about it many times   Figure 1. W32.Changeup prevalence   One characteristic of W32.Changeup is that it is written in Microsoft Visual Basic 6.0 and the viral part of its program code is seen in the program file, but […]

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Yes, if your computer gets infected by Urausy Lockscreen, it will get locked. Luckily, not forever! Avast protects you against it. In this blogpost we will introduce an infamous lockscreen called Urausy. We will look at its special anti-debugging and anti-reverse engineering tricks, at its communication protocol, and determine what the conditions (if any) are […]

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As I wrote in parts one and two of this series of blogs, Java.Cogyeka uses an autorun.inf file to propagate and download an additional module. I was able to get the downloaded module, based on a Java application, even though it took over a week because of the difficulty in establishing a connection with the […]

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