Abstract
Malicious programs, or malware, often use code obfuscation techniques to make static analysis difficult. To deal with this problem, various behavioral detection techniques have been proposed that focus on runtime behavior to distinguish between benign and malicious programs. The majority of them are based on the analysis and modeling of system call traces, which are a common type of audit data often used to describe the interaction between programs and the operating system. However, the techniques are not widely used in practice because of high performance overheads. An alternative approach is to perform behavioral detection at the hardware level. The basic idea is to use information that is accessible through hardware performance counters, which are a set of special purpose registers built into modern processors providing detailed information about hardware and software events. In this paper, we pursue this line of research by presenting HLMD, a novel approach that uses behavioral signatures generated from hardware performance counter traces to instantly detect and disable malicious programs at the beginning of their execution. HLMD is especially suitable for independent malicious programs that can be run standalone without having to be attached to a host program. Each behavioral signature is composed of some number of singular values and singular vectors, obtained by applying the singular value decomposition to the hardware performance counter traces of a known malware family. HLMD follows a two-stage heuristic matching strategy to increase the detection performance to an acceptable level while reducing the detection complexity to linear time. The results of our experiments performed on a dataset of benign and malicious programs show that HLMD can achieve an average precision, recall, and F-measure of 95.19%, 89.96%, and 92.50%, respectively.
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