Semantics-Aware Malware Detection

  • Authors:
  • Mihai Christodorescu;Somesh Jha;Sanjit A. Seshia;Dawn Song;Randal E. Bryant

  • Affiliations:
  • University of Wisconsin, Madison;University of Wisconsin, Madison;Carnegie Mellon University;Carnegie Mellon University;Carnegie Mellon University

  • Venue:
  • SP '05 Proceedings of the 2005 IEEE Symposium on Security and Privacy
  • Year:
  • 2005

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Abstract

A malware detector is a system that attempts to determine whether a program has malicious intent. In order to evade detection, malware writers (hackers) frequently use obfuscation to morph malware. Malware detectors that use a pattern-matching approach (such as commercial virus scanners) are susceptible to obfuscations used by hackers. The fundamental deficiency in the pattern-matching approach to malware detection is that it is purely syntactic and ignores the semantics of instructions. In this paper, we present a malware-detection algorithm that addresses this deficiency by incorporating instruction semantics to detect malicious program traits. Experimental evaluation demonstrates that our malware-detection algorithm can detect variants of malware with a relatively low run-time overhead. Moreover, our semantics-aware malware detection algorithm is resilient to common obfuscations used by hackers.