How i can whit list or change defender rules ,when malicious files are detected in SharePoint Online, OneDrive, or Microsoft Teams and backup failed by Veam as their is malware in file

Question

How i can whit list or change defender rules ,when malicious files are detected in SharePoint Online, OneDrive, or Microsoft Teams and backup failed by Veaam as their is malware in file
how we can make them whit list as these are legitimate files as per discussion with end user
or any procedure that we can change some settings