Mercenary mayhem: A technical analysis of Intellexa's PREDATOR spyware
blog.talosintelligence.com
blog.talosintelligence.com
Cloudflare's 1.1.1.2 is also blocking those domains.
And IoC raw IPs. Although that could break the web as IPV4 addresses change hands all the time, so you could overblock.
[1] - https://bgp.tools/
[2] - https://bgp.he.net/