JH, known also as Error, was found to be in the wild in Finland at the end of August 1994. The virus might have been written in Finland.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
More scanning & removal options
More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.
JH stays resident in memory and infects EXE files. The files get infection almost every time they are accessed. Copying or renaming is will do the job. Virus avoids infecting some anti-virus programs.
The virus activates any time at September. It shows the following text in the middle of the screen written in red colour:
-= ERROR Virus Version 0.1B (C) 1994 JH =-
Description Details: Mikko Hypponen, F-Secure