I did not hear about such domains, and you can block it by adding yalla.live to your "Always block" list. But you may be better off with uninstalling the program or app which tries to use these domains.
"I've searched for it online but does not come up with anything."
You are just a bad searcher. In case of domains you must perform a WHOIS on it.
And here is more infomation about the domain: https://whois.domaintools.com/yalla.live
