This virus only infects files when the DIR command is given, hence the name. The virus has not been fully analysed, but it appears not to contain any destructive code.
This virus is not directly related to the famous DIR-II virus.
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.