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06.07.2015

New MJS Article: Why Anti-Virus Software Fails

by Daniel Sauder

Based on my work about antivirus evasion techniques, I started using antivirus evasion techniques for testing the effectivity of antivirus engines. I researched the internal functionality of antivirus products, especially the
implementation of heuristics by sandboxing and emulation and succeeded in evasion of these.
A result of my research are tests, if a shellcode runs within a x86 emulation engine. One test works by encrypting the payload, which is recognized as malicious normally. When the payload is recognized by the antivirus software, chances are high, that x86 emulation was performed.
This article appears in the special edition „In Depth Security – Proceedings of the DeepSec Conferences“. Edited by Stefan Schumacher and René Pfeiffer

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