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Histogram-based virus detection

  • US 6,971,019 B1
  • Filed: 03/14/2000
  • Issued: 11/29/2005
  • Est. Priority Date: 03/14/2000
  • Status: Expired due to Term
First Claim
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1. A virus detection system for detecting whether a computer file is infected by a computer virus, the system comprising:

  • an emulation module for emulating instructions in the computer file;

    a record generation module coupled to the emulation module for identifying emulated instructions matching specified characteristics and generating a record counting occurrences of the emulated instructions matching the specified characteristics; and

    an evaluation module coupled to the record generation module for comparing the generated record with known virus instruction occurrence records to detect the presence of the computer virus.

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