This entirely depends on what the name might be in avast as there is no reference to nopir in the virus database.
You need to check out the various aliases it may have, see
VGREP Virus Name search and information. We need VGrep because, without the correct name, it may prove very difficult to access accurate information about a virus and its effects.
There is also no reference to nopir in the above link, so it may be very new and not listed or an incorrect virus name.