This morning I was notified of a generic ransomware detection ("Malware.Ransom.Agent.Generic"). The file appears to have been deleted from my system but I found the JSON file with the log for the detection on my system and it contained the SHA256 hash.
The hash is 82fed84f0d5249f1320b72876df646113f7b963870fdd054ae4477b07bb54d78 and a matching file has already been uploaded to VirusTotal.
This appears to simply be part of an update to the Tresorit cloud storage application that I use. This is what I suspected since Tresorit stopped running around this time which I'd expect to see if it tried to update and was interrupted in the middle of the process.