AbstractAbstract: This paper investigates how ransomware is continuing to evolve and adapt as time progresses to become more damaging, resilient and sophisticated from one ransomware variant to another. This involves investigating how each ransomware sample including; Petya, WannaCry and CrySiS/Dharma interacts with the underlying system to implicate on both the systems functionality and its underlying data, by utilising several static and dynamic analysis tools. Our analysis shows, whilst ransomware is undoubtedly becoming more sophisticated, fundamental problems exist with its underlying encryption processes which has shown data recovery to be possible across all three samples studied whilst varying aspects of system functionality can be preserved or restored in their entirety.
CitationWood, A. & Eze, T. (2020 - forthcoming). "The Evolution of Ransomware Variants," 19th European Conference on Cyber Warfare and Security, Chester, England.
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