Threat Description

Niknat

Details

Aliases:Niknat, Evah
Category:Malware
Type:Virus
Platform:W97M

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


Automatic action

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

More

You may wish to refer to the Support Community for further assistance. You also may also refer to General Removal Instructions for a general guide on alternative disinfection actions.



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




Technical Details: Katrin Tocheva, Peter Szor and Urmas Rahu, F-Secure, 1997


SUBMIT A SAMPLE

Suspect a file or URL was wrongly detected? Submit a sample to our Labs for analysis

Submit Now

Give And Get Advice

Give advice. Get advice. Share the knowledge on our free discussion forum.

Learn More