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Forensic Journey: Breaking Down the Userassist Artifact Structure
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2 Articles
This paper deeply analyzes the UserAssist registry key and its data structure in Windows system, explores its mechanism of recording program execution information, the reasons for data inconsistency and its relationship with Shell32 component. The study reveals the update process of UserAssist, the role of UEME_CTLSESSION value and its relationship with program usage percentage, and proposes a new parsing method to improve the forensic value.
What is UserAssist and how to use it in IR activities?
Introduction As members of the Global Emergency Response Team (GERT), we work with forensic artifacts on a daily basis to conduct investigations, and one of the most valuable artifacts is UserAssist. It contains useful execution information that helps us determine and track adversarial activities, and reveal malware samples. However, UserAssist has not been extensively examined, leaving knowledge gaps regarding its data interpretation, logging c…
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