The last time I checked their Terms and Conditions did not list any company details. They are hiding behind anonymity.
But googling the site name hope there will be a legal address as viparmenian said and I find out that the exchange CEO was once arrested which implies that there could be a chance to start legal action against the site or is there something I am missing. Besides, their domain owner could also have some hints about the address.
Domain is one of the was we are going to use to identify the yobit legal address, but currently they use Protection Service of REG.RU from Russia in Moscow to hide the Address.