Ha! This got a good chuckle out of me. Check again; this happens more often than you would think in the web hosting business, especially the small to medium business segment. "It's just a website how hard could it be?"
If I had a nickel for every RHEL 5 (yes, 5!) box still running after we begged customers to please, please move to something actually receiving patches...
In theory ransomware shouldn't have as large of an impact, but in practice backups are not a magical wand of "restore website and lose 0 transactions" either. That's assuming the backups are actually configured to grab the correct data, and haven't been silently failing for months...