Niknat
Summary
Niknat is a simple Word Macro virus. It creates a hidden directory called C:\EvaHzg2 and writes a batch file into it. This batch creates a bitmap file (Evah.bmp) by using debug.exe from DOS.
Removal
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
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Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
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Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
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Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Technical Details
Niknat activates on 23rd of October. Then the virus manipulates the registry in order to change the active Wallpaper to a new one. This new Wallpaper is the previously creates Evah.bmp which contains a picture of a naked girl.
Niknat contains the 6 macros:
Evahzg AutoClose ToolsMacro FileTemplates TCloseAN DCloseAN
Any attempt to use Tools/Macro or File/Templates menu causes the computer's speaker beep while a message box with this text appears on the screen:
Windows Protection Error
The virus body contains the following text which is never displayed:
by NAENBGOURSG SO.HT.AI.KS 231076-GREECE Thanks to NEURO VRD 19-4-1997 VRP A.U.A