Worm, This kind of infection exists in encrypted form in order to evade antivirus detection. It also carries a decryption algorithm. Consequently, the virus decrypts first before running.
Because it alters the coding that can be used to detect it, the virus is exceedingly evasive. As a result, virus identification is highly challenging. Emails, portable USB devices used for injection and ejection into various systems, infected websites, and these methods are the best for propagating computer viruses. Vendors that sell antivirus software do not embed viruses in their CDs and DVDs. Refer to here for more information. By adding itself to the end of a file, this kind of virus infects the system. It modifies a program's beginning so that the control jumps to its code. The control switches back to the main programme after its code has been run.
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