polymorphic virus

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polymorphic virus

A virus that changes its binary signature each time it infects a new file. Using a random number generator, a unique key can be created to encrypt each virus download that self extracts and executes when opened. Without an identifiable pattern to match, the only way to discover a polymorphic virus is by its actions (see behavior detection). See self-extracting file.

Also called a "stealth virus," hundreds of thousands of polymorphic Windows viruses are discovered every day. The actual number of antivirus families that generate that many files is perhaps a few thousand. See virus and antivirus program.
References in periodicals archive ?
Other researchers, have predicted machine learning could ultimately be used to "modify code on the fly based on how and what has been detected in the lab," an extension on polymorphic malware.
Patent 9,665,713) that accurately identifies zero-day and polymorphic malware in files.
New-age attacks, like polymorphic malware, constantly evolve to evade traditional securities and human eyes at the border.
Most of these are polymorphic malware and are cryptic to bypass latest detection tools in the market [Gallagher, 2014; Weimer, 2014]
The incorporation of a behavioral analytics threat detection engine makes z9 immune to evasion techniques, such as polymorphic malware that constantly changes codes.
Malwise-An Effective and Efficient Classification System for Packed and Polymorphic Malware, Deakin University, Victoria, June 2013
Built upon Symantec Insight, these solutions will provide fast and effective endpoint security for VMware environments, offering unique protection against modern polymorphic malware, zero-day attacks and rootkits.
Innovative architecture defeats polymorphic malware, allowing IT to safely embrace mobility and the social web
Malwarebytes' position in the market is gained on its capability to propose higher security from zero-day threats, as well as against polymorphic malware.
The last couple of months mainly consisted of polymorphic malware of which 70% were all email borne malware which signifies the nature by which criminals are targeting business industries by exploiting traditionally used security measures.
This month's analysis reveals a significant increase in activity related to what may be described as a aggressive and rapidly changing form of generic polymorphic malware.
Our industry-leading anti-malware engine provides superior detection rates and heuristic analysis to detect and block even the most sophisticated polymorphic malware.

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