This virus contains the following text:
This program was written in MSTU,1990
MSTU is an old abbreviation for the name of the Sofia Technical University.
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.
A slightly modified variant, possibly from Russia.