Hello @vastraafusion, The data in your Dropbox account may be recoverable provided it did not happen long ago. Dropbox keeps history of your files from 30 days (free basic account) to 180 days depending on your account type.
First of all, you need to get rid of the malware from your affected computer by using some antivirus program or cleanly reinstalling your operating system. If you have important data to recover, you should consult some tech support before reinstalling or deleting the encrypted files, until then you may keep it disconnected from the internet.
For the Dropbox data, if you have access to another clean computer, you may try to log into Dropbox web. You should disconnect your affected computer from the Dropbox until you remove the ransomware from it. Go to https://www.dropbox.com/account/security In the Devices section, remove the computer that is affected.
Check the events log: https://www.dropbox.com/events There you should find when your files were altered.
Then you may go to each file > Check the version history > and Restore them before they were locked. If there are too many files, you may contact Dropbox support directly https://www.dropbox.com/support to help you with restoring your account.
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