Home > Threat descriptions >



Category: Malware

Type: Virus

Aliases: Helloween


This virus doesn't activate, because of an mistake in code (the virus should activate on every Octomber 20th).


Automatic action

Based on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the detected program or file, or ask you for a desired action.

Knowledge Base

Find the latest advice in our Community Knowledge Base.

About the product

See the manual for your F-Secure product on the Help Center.

Contact Support

Chat with or call an expert for help.

Submit a sample

Submit a file or URL for further analysis.

Technical Details

This virus doesn't contain any destructive routine - it only tries to write the following message:

 Virus napsany specialne pro inzenyra ZAKA ze SPS*******************Nepodlehejte panice, mate nakazeno jen par souboru...(c) 1993 II.A 1988Tak a ted si vyzkousime treba: RESETKdyby kazdy nespokojeny studentnapsal virus, tak v nasich skolach byani jiny software nekoloval a McAfee by se divil...

After this the virus waits for a keypress and then resets the machine.

The 1376 bytes long variant is nearly identical to the Helloween.1839 described above, but it displays this message:

 Nesedte porad u pocitace a zkuste jednou delat neco rozumneho!
!! Poslouchejte HELLOWEEN - nejlepsi metalovou skupinu !!

This variant also has a different xor-coding constant, it activates on November 1st when it reboots the machine.