Malware polymorphism: Difference between revisions
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In the context of computer [[malware]], '''malware polymorphism''', often phrased in the context of the malware itself such as '''polymorphic worm''' or '''polymorphic virus''', in order to hide itself from malware detection tools (e.g., [[host intrusion detection system]]). A simple example would be a worm that contains malicious instructions, but inserts null instructions into the software payload, so: | In the context of computer [[malware]], '''malware polymorphism''', often phrased in the context of the malware itself such as '''polymorphic worm''' or '''polymorphic virus''', in order to hide itself from malware detection tools (e.g., [[host intrusion detection system]]). A simple example would be a worm that contains malicious instructions, but inserts null instructions into the software payload, so: | ||
*Detection fails when looking for software of a specific length, because the number of null instructions is random in each copy | *Detection fails when looking for software of a specific length, because the number of null instructions is random in each copy | ||
*Detection fails when looking for a specific sequence of instructions that simply matches a pattern, and will not ignore null operations that change the content, but not the execution behavior, of the malware | *Detection fails when looking for a specific sequence of instructions that simply matches a pattern, and will not ignore null operations that change the content, but not the execution behavior, of the malware | ||
Revision as of 04:48, 8 April 2024
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 In the context of computer malware, malware polymorphism, often phrased in the context of the malware itself such as polymorphic worm or polymorphic virus, in order to hide itself from malware detection tools (e.g., host intrusion detection system). A simple example would be a worm that contains malicious instructions, but inserts null instructions into the software payload, so:
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