Stilo oils, what is it (see picture)

Hello! Now for the first time a problem with my beloved Stilo. The garage entrance had got small droplets. So water is not, is greasy. Now I have looked in the garage and see this also small spots. In the appendix I have an old picture, from what I go out, where the oil drips out (see red circle). What is slightly dirty black now is much crazier! Will send you a more up-to-date picture as soon as possible. What is this? Is that the gearbox and if so, what could it come from, that it loses oil or is it something else? I am grateful for every help, because he has to go to TÜV in 2 weeks and I don’t know if he sees it so well… Thank you! Greetings