I use this instructions https://docs.microsoft.com/en-us/sql/relational-databases/databases/attach-a-database

When I click extract(query) or when I use function attach database I see this:

===================================

Attach database failed for Server '.\SQL'. ...

Here I get this code: https://www.datanumen.com/sql-recovery/articles/dbcc-checkdb.htm

Yes, client never backed up the database, and yes all files was destroyed by a ransomware attack.

So it is not possible...

My client can't give me database in .bak beacouse he was attacked and have encrypted all files... He restore only this files from 02.01.2018

Marcin