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Macro.PPoint.Attac Viruses Information
| Name: |
Macro.PPoint.Attac |
| Category: |
Viruses |
| Description:
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Details
Macro.PPoint.Attach
This is the first known macro virus infecting MS PowerPoint presentation files. As well as other viruses infecting MS Office applications this is written in Visual Basic for Applications (VBA) language, and for spreading it uses Basic instructions and MS PowerPoint features.
The virus contains one macro that has event-function "UserForm_Terminate", this function is activated each time when UserForm is closed. This is the main virus function and it contains the virus infection routine.
When activated the virus infection routine searches for *.PPT files in the "C:My Documents" directory and subdirectory tree, opens files and copies its macro code to there.
Because of PowerPoint internal structure the virus is able to get control only in case any UserForm exists in target file. The virus checks files for UserForm presence and infects only such presentation. Otherwise the virus skips files and leaves them not infected.
The virus does not manifest itself in any way. It contains the comments, the first line is also used by the virus as the identification text to prevent duplicate infection:
PPT.Attach v0.1 /1nternal |
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