312-50V13 · Question #144
312-50V13 Question #144: Real Exam Question with Answer & Explanation
The correct answer is A: Polymorphic Virus. The described virus, which changes its executable code upon each infection while maintaining the same original algorithm and function, is known as a polymorphic virus.
Question
ViruXine.W32 virus hides their presence by changing the underlying executable code. This Virus code mutates while keeping the original algorithm intact, the code changes itself each time it runs, but the function of the code (its semantics) will not change at all. Here is a section of the Virus code: What is this technique called?
Options
- APolymorphic Virus
- BMetamorphic Virus
- CDravidic Virus
- DStealth Virus
Explanation
The described virus, which changes its executable code upon each infection while maintaining the same original algorithm and function, is known as a polymorphic virus.
Common mistakes.
- B. A metamorphic virus rewrites its entire code, including its underlying algorithm, making it structurally different each time, which is distinct from a polymorphic virus that only changes its appearance.
- C. 'Dravidic Virus' is not a recognized or standard classification for a type of computer virus in cybersecurity.
- D. A stealth virus focuses on actively hiding its presence or modifications it makes to the system from detection, but it doesn't inherently change its own code as it spreads.
Concept tested. Malware types - polymorphic viruses
Reference. https://www.cisco.com/c/en/us/products/security/what-is-polymorphic-malware.html
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