answersLogoWhite

0


Best Answer

It frequently changes its code characteristics.

User Avatar

Wiki User

13y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What techniques does a polymorphic virus employ to make itself more difficult to detect?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Why is it difficult to employ probability sampling techniques overseas?

It is not!


How old do you have to be to enter Ghost Hunters Academy?

Polymorphic code was the first technique that posed a serious threat to virus scanners. Just like regular encrypted viruses, a polymorphic virus infects files with an encrypted copy of itself, which is decoded by a decryption module. In the case of polymorphic viruses, however, this decryption module is also modified on each infection. A well-written polymorphic virus therefore has no parts which remain identical between infections, making it very difficult to detect directly using signatures. Antivirus software can detect it by decrypting the viruses using an emulator, or by statistical pattern analysis of the encrypted virus body. To enable polymorphic code, the virus has to have a polymorphic engine (also called mutating engine or mutation engine) somewhere in its encrypted body. See Polymorphic code for technical detail on how such engines operate.[21] Some viruses employ polymorphic code in a way that constrains the mutation rate of the virus significantly. For example, a virus can be programmed to mutate only slightly over time, or it can be programmed to refrain from mutating when it infects a file on a computer that already contains copies of the virus. The advantage of using such slow polymorphic code is that it makes it more difficult for antivirus professionals to obtain representative samples of the virus, because bait files that are infected in one run will typically contain identical or similar samples of the virus. This will make it more likely that the detection by the virus scanner will be unreliable, and that some instances of the virus may be able to avoid detection.


What artistic techniques does Lawren Harris employ?

uses a blue paintbrush


Who will dictate a number of command and control techniques for a unit to employ?

company commander


Who will dictate a number of command and control techniques for the unit to employ?

Company Commander


What materials and techniques did Andy Warhol employ to get his ideas across?

bob the builder is cool!!


What techniques do advertisers employ in their effort to sway viewers attitudes toward a particular product?

Pavlonian conditioning


What writing techniques did Charles Dickens employ?

He utilized a mixture of fantasy, drama, melodrama and comedy to create his books.


You will employ different listening techniques for different purposes while active listening Which of the following is not one of the three purposes we discussed?

skimming


What other techniques might Dell employ in order to find out what types of laptops and desktop computer systems consumer want?

hnn


How can you make base defense easier and make unobserved enemy approach more difficult?

employ sensors


How can we make base defense easier and make an unobserved enemy approach more difficult?

employ sensors