Journal
JOURNAL OF COMPUTER VIROLOGY AND HACKING TECHNIQUES
Volume 2, Issue 3, Pages 211-229Publisher
SPRINGER FRANCE
DOI: 10.1007/s11416-006-0028-7
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In this paper, we analyze several metamorphic virus generators. We define a similarity index and use it to precisely quantify the degree of metamorphism that each generator produces. Then we present a detector based on hidden Markov models and we consider a simpler detection method based on our similarity index. Both of these techniques detect all of the metamorphic viruses in our test set with extremely high accuracy. In addition, we show that popular commercial virus scanners do not detect the highlymetamorphic virus variants in our test set.
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