I have been affected over 100k files encrypted and the hackers want 0.01 BTC to give you the password.
Loots like QNAP left HARDCODED admin creds in the Hybrid Backup Sync app for the NAS devices, you know like a moron would leave in production code. Told about it over 4 months ago privately, and they ignored it. Was publicly disclosed on 31st March and guess what 3 weeks later loads of users having their files encrypted. QNAP only released a fixed update over 48 hours after attack started. More information and a thread for those affected here:
https://www.bleepingcomputer.com/for...-7z-read-metxt
Long thread but worth it.
One piece of advice if you are affected:
DO NOT REBOOT YOUR NAS
Read the info first, try and get the password for your files or it's a world of hurt - I know.