Threat Description



Aliases: Kenston, Haha
Category: Malware
Type: Virus
Platform: W32


Win95/Kenston (also known as Win95/Haha) is was found in February 1999. It infects Win95/Win98 program files. The virus is encrypted with a simple XOR function.

When an infected file is executed, the virus locates clean PE EXE files and infects them. It does not do anything else.


Automatic action

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


Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.

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

Technical Details

The virus contains these texts which are never displayed:

Boles and Manning are arrogant facists. They have no computer         sk1llz and KENSTON HIGH SCHOOL's computers are 0wn3d. I AM         BACK KOONS YOU MOTHERFUCKER dowN wiTh KenSTON..... yOU tRIED         tO rID yOUrSELf oF mE BefoREbUT fAILED         HAHAHAHAHAHAHAHAHAHAHAHAHAHAHA 		 		

Win95/Kenston has been found in the wild in several parts of Europe.

It has probably been written by a studen in the Kenston High School, in Ohio, USA. The people mentioned in the above text are working for this school and have nothing to do with the virus.

Description Details: Mikko Hypponen, F-Secure


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