Report is flawed - Namecoin DNS infrastructure?
From: https://www.bitsight.com/blog/joint-effort-with-microsoft-to-takedown-massive-criminal-botnet-necurs
"A second DGA-like fetches .bit domains that are not generated algorithmically but hard-coded.
The .bit TLD is an alternative DNS model, maintained by Namecoin, that uses a blockchain infrastructure and is harder to disrupt when compared with ICANN regulated TLDs."
Unless they block all Namecoin-able DNS servers, I cannot reasonably see why spend so much time, money and coordination efforts in such operation.