The Latest in IT Security

Posts Tagged ‘executable code’

Recently I wrote a blog post about a legitimate website spreading Sirefef malware. Then I continued with a deeper analysis and noticed that it uses an interesting cryptor.Malware authors spread many new variants of malware every day. These variants often look completely different at the first glance. That’s why regular updates of your antivirus is […]

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We have seen variants of Worm:Win32/Gamarue spread via removable drives in the past, but recent variants have adopted a more convoluted method of spreading involving several components. Let’s take a look at one. For this variant of Worm:Win32/Gamarue, we start with an infected removable drive, for example a USB flash drive. Our infected example drive […]

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Nowadays it’s very common for threats to use rootkit techniques to hide malicious files on computer hard drive, but it’s not so common to hide actual payload in the Windows Registry and use malicious file as only a loader. The following sample has evolved a bit since we first saw this kind of thing but […]

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