Threat Description



Aliases: Ontario.1024, SBC
Category: Malware
Type: Virus
Platform: W32


Ontario is a polymorphic, semi-stealth virus. It stays resident in memory and infectes all executed COM and EXE files. COMMAND.COM is infected by inserting the virus code to an unused part of the file.

Ontario will cause vague printer problems.

Two variants, 512 and 1024 bytes in size, are known.


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.


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