The probe was automated; at least, that was the assumption, since all attempts to communicate were ignored and it didn’t react at all to the crew of Friendship trying to gain entry. Eventually it was decided that having done its job, the probe had simply shut down and was now non-functional.
Below it, Mars was infected. Black vegetation was crawling across the surface, and the atmosphere was thickening. Whatever the probe had released to burrow down into the dust must have contained powerful biotechnology.
For now all we can do is watch, and wait for the new owners to arrive.