Any tools?

[pbjnr]

Are there any tools available to decrypt files corrupted by DMA Locker 3 yet ?

[MAM]

Hello,

and welcome in our Forum.

Maybe, you can try this, https://id-ransomware.malwarehunterteam.com/index.php?lang=en_US

MAM

[exile360]

Nice resource MAM

They do list this among the types of ransomware they detect so hopefully they can decrypt those files:

DMA Locker 3.0

[Amaroq_Starwind]

Do you think by combining machine learning, Windows File History, the Windows Search Index, signature-based detections, and so on, it would be easier for Malwarebytes to repair encrypted or corrupted files? 

[exile360]

I doubt it, since most threats of this type tend to destroy/delete such content, and were Malwarebytes to attempt to store/protect it that would require a massive amount of space on disk which I'm sure most users wouldn't appreciate (this is not unlike solutions that attempt to protect files by constantly keeping everything backed up; it can be successful but at the price of large amounts of disk space, and if the infection is aware of it and able to defeat the protection, it can destroy those backups just like everything else).

The most effective means of preventing an infection or other disaster from destroying your data is to keep regular backups on a device separate from the system such as an external drive, and it's a good idea to keep at least one copy of that backup offsite somewhere in case of theft or fire or any other sort of natural disaster that might put your hardware at risk.