Wrench (also known as Virus.MSWord.Wrench) is a macro virus on Microsoft Windows. It is a Microsoft Word virus, meaning it is harder to detect, and it exploits security functions in Microsoft Word, to infect the computer.


When the file is opened, the Microsoft Word document appears to be a bunch of advertisements at first. However, if the user clicks "About Microsoft Word", a different window opens entirely, the window contains a crudely drawn photo, and the window name says: "Cyco Sushi!!!", If the user presses the Ok button, the virus will or not display a message, due to the coding. If the user attempts to look at the macros, an error message will pop up, and it will close Microsoft Word.


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