The name of this virus is derived from a text string found inside it:
Black Monday 2/3/90 KV KL MAL
It is rarely possible to restore infected .EXE files, as the virus may overwrite some bytes at the end of the file.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
More information on 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.
A 781 byte, possibly older variant, which is only able to infect COM files.