Well, we are a small company, like 10 IT people here, I know all of them for a pretty long time. I doubt it would be one of them. But someone from outside of IT department could do it theoretically, some other admins or whatever. Though I doubt it. Anyway, it's my mistake, and one must pay for mistakes. I will learn from it now. Time to move on only and reconcile to it :/

EDIT: Anyway, I put only like 3 BTC to MoonCoins, that's not gonna ruin me. The question is, how much could I have had from it. And even though I am pretty peaceful person and few things can disturb me, this shaked me inside a bit, as I'm not computer and Bitcoin n00b. Never thought this can happen to me