What is Macro Virus

A macro virus is a virus that is written in a macro language: a programming language which is embedded inside a software application (e.g., word processors and spreadsheet applications). A macro is an instruction that carries out program commands automatically within an application. Macros are typically used in popular office applications such as Microsoft Word and Excel. A macro virus uses the internal workings of the application to perform malicious operations when a file containing the macro is opened, such as deleting files or opening other virus-executable programs. Sometimes these viruses also infect program templates that are loaded automatically by the applications. Every time the user creates a file using the default template, the macro virus is copied to the new file.


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