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.
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.