It is expected that a new virus will strike tomorrow infecting Microsoft Word 97 documents via a Visual Basic macro.
The "July Killer" is only active during July and can destroy the data on a hard drive, according to antivirus software company Trend Micro.
The virus will strike when users open an infected Word 97 document, which prompts a dialogue box entitled "A wake up call for the generation". A choice of two buttons appear. If the user clicks the "OK" button, a message appears that says "You are wise, please choose this again later".
However, if the user chooses the "Cancel" button three times, this message appears: "Stop it! You are so incurable to lose three chances! Now, god will punish you."
The virus will then open the autoexec.bat file and add the command line 'deltree/y c:\' to the file. The next time the user boots the machine, all files in the hard disk will be deleted, says Trend Micro.