Made a blocker some time ago for Coin Hive and a few others, will add Coinerra to the blocker too. You can check it out on Github: https://github.com/keraf/NoCoin

Some list i have in uBlock Origin already blocks CoinHive's miner (https://github.com/uBlockOrigin/uAssets/issues/690), i guess this will follow soon.

Mining services are fighting back by registering additional "random" domains though: https://github.com/jspenguin2017/uBlockProtector/issues/636#...

It only sucks if you use it without user-consent. Sadly a lot of sites probably will, which is why a blocker sounds reasonable.

uBlock Origin now includes a default filter list called Resource abuse, for blocking cryptocoin miners and the like.