Threat description


Platform: W32
Aliases: Imposter


For more information of Word macro viruses, see the description of Concept.

WM/Imposter.A is a common Word macro virus, which is similar to DMV and Concept viruses.


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.


More information on scanning and removal options available in your F-Secure product can be found in the Help Center.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

Contact Support

For further assistance, F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.

Technical Details

When it first infects a system, it displays a dialog box with text 'DMV'.

Imposter.A contains a comment which reads:

just to prove another point  

Imposter.A only replicates.

Variant:Imposter.E(Wormy-1, PC-Format)


Unlike Imposter.A, this variant is not very similar to DMV or Concept viruses.

When the virus infects the system for a first time and the user exits Word, it displays the following message in the status bar:


After that Imposter.E infects every document when they are saved. It also re-infects files that have been infected already.

Virus also contains this text within its code:

    by NAENBGOURSG       SO.HT.AI.KS       231076-GREECE       Thanks to NEURO       VRD 19-4-1997       VRP A.U.A  

Otherwise the virus just spreads.

Technical Details:Mikko Hypponen and Katrin Tocheva, F-Secure Ltd


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