Threat Description

Xtac

Details

Category: Malware
Type: Virus
Platform: DOS
Aliases: Xtac, Xtac

Summary


Xtac stays resident in memory and infects COM and EXE files when they are executed. COMMAND.COM is infected by overwriting an unused area.



Removal


Automatic action

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

More scanning & removal options

More information on scanning or removal options is available in the documentation for your F-Secure security product on the Downloads section of our Home - Global site.

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


Sometimes the virus deletes files with the following extensions:

  • COM
  • EXE
  • SYS
  • BAT
  • OBJ
  • OVR
  • OVL
  • INI
  • CFG
  • TPU
  • HLP
  • TPL
  • BGI
  • CHR

Xtac contains the following unencrypted internal text:

good news! you have justbeen smitten by XTAC - lyndon siao, usc-tc  

Xtac was reported to be in the wild in the USA in January 1996.





Description Created: 2006-01-01 15:22:14.0

Description Last Modified: 2006-01-01 00:00:00.0


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