Welcome to the resource topic for 2022/1699
Title:
SoK: Use of Cryptography in Malware Obfuscation
Authors: Hassan Asghar, Benjamin Zi Hao Zhao, Muhammad Ikram, Giang Nguyen, Dali Kaafar, Sean Lamont, Daniel Coscia
Abstract:We look at the use of cryptography to obfuscate malware. Most surveys on malware obfuscation only discuss simple encryption techniques (e.g., XOR encryption), which are easy to defeat (in principle), since the decryption algorithm and the key is shipped within the program. This SoK proposes a principled definition of malware obfuscation, and categorises instances of malware obfuscation that use cryptographic tools into those which evade detection and those which are detectable. The SoK first examines easily detectable schemes such as string encryption, class encryption and XOR encoding, found in most obfuscated malware. It then details schemes that can be shown to be hard to break, such as the use of environmental keying. We also analyse formal cryptographic obfuscation, i.e., the notions of indistinguishability and virtual black box obfuscation, from the lens of our proposed model on malware obfuscation.
ePrint: https://eprint.iacr.org/2022/1699
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