The targeted files after will be infected and also be able to keep spreading afterwards. Rather, it is a malware that looks for files and overwrite the contents of targeting files. Therefore, the following demo script cannot be called exactly ‘the computer virus’. Finally, at some point (or randomly), the virus will do the damage (deleting files etc). At certain conditions, the virus will mutate a little bit, in order to generate a ‘new’ virus without being detected easily. It also copies (also known as spreading).

Therefore, it can be used to create a virus demo.Ī computer virus hides itself without being noticed. The VBS uses existing opening windows object to write to files/registry etc.

The VBS virus is written in VBScript, which is a very powerful scripting languages, especially its features can be extended/expanded through third party library (via COM object invoke). Everyday, there is a ‘new’, ‘mutated’ malware/virus causing damages via internet. In recent years, the malware, virus written in scripting language are spreading rapidly worldwide.

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