Exploiting Similarity Between Variants to Defeat Malware

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Provided by: University of Louisiana
Topic: Security
Format: PDF
Many malicious programs are just previously seen programs that have had some minor changes made to them. A slightly different variant hardly qualifies as a stealth attack: being 99% the same as a known piece of malware should be a dead give-away. This paper describes a method for searching database of programs for a match. The methods are adapted from ordinary text search and analysis; the key to making them work is in selecting the right aspects of the programs to compare. The aspects compared are features called \"N-perms\" which are constructed from abstracted, disassembled code.
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