Recently I joined a COVID19 threat sharing group. It is pretty amazing watching the data analysis and community driven response to the pandemic.
One of the biggest contributions the community has made is publishing an easy to access blacklist: https://blocklist.cyberthreatcoalition.org/vetted/
At time of this writing the domain and URL categories are very fleshed out, and each contain hundreds of ioc’s that should be detected upon/known about.
I encourage anyone and everyone to check out the group, and their weekly threat advisories.