I support neither side, as I think this is really just a fight between Russia and Ukraine and need not involve anyone else. This is their fight, and no one else's. I don't believe either of them are socialist, though. Their governments have more the character and personality of gangsterism and organized crime, not genuine statecraft or statesmanship. Something fishy is going on, but it's hard to tell what's going on behind the scenes.
I never bought into the Western narrative that Putin has some kind of "Hitler complex" and that he's maniacally hellbent on world domination. That doesn't mean I support what he's doing, as I think he's wrong for launching an aggressive invasion - which is a violation of the UN charter and various treaties. On that point, he's as guilty as a cat in a goldfish bowl, so there's no spinning that away, regardless of the pretexts used.
I tend to support socialism (or at least a mixed economy), mainly because I support a government with a coherent set of goals and principles dedicated to the betterment of the lives of the people and the overall quality and strength of the nation as a whole. When the leaders in a given state think more in terms of their own personal wealth over the well-being of the collective whole, then they have violated the social contract and can't really be considered "socialist" by any standard.