Threat Description



Category: Malware
Type: Virus
Platform: W32
Aliases: Bait


Bait-virus was found in Finland during spring 1994. When an infected file is executed, it will infect several COM files in the current directory and change the working directory to \DOS. Infected files will grow by 425 bytes.


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

The virus encrypts itself with a variable 16-bit key, but the decryption routine is constant, so this virus can be detected with a search string.

The following text is found underneath the encryption:

         Bait Virus 2.0. Finland (C) 1994 JH  

Description Details: Mikko Hypponen, F-Secure


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