When a new file is uploaded in box copy to sharepoint

Hi,

I am trying to archive all the files in a box folder to a SharePoint document library. I have done an initial migration and now I am trying to figure out how to know when a new file is uploaded to box so then I can automatically copy it over to SharePoint. 

I have tried using MS Flow, but the trigger only works for a specific folder. This won't work because my root folder has several subfolders and I would have to create hundreds of new flows each week. 

Any ideas if this is possible?