then we might have suggested different routes.
Different malware often needs to be handled differently.
Do you know the name of this malware?
Try a test with one of those files, eg locked-expenditure05-06.xls.jlxv
Copy the file and place the copy in some other location, eg your Desktop. Why copy? We work on the copy, not on the original for tests. Right click that copied file and select "Rename".
Rename it to expenditure05-06.xls
Press Enter. Now open that file. Does it work?