Wow. Given that Kaspersky leaders are very non-neutral, it makes these comments even fishier, because they look like a clumsy attempt to implicate Ukrainians in an attack.

(Clumsy because, firstly, source code comments is a very strange place to write “Glory to Ukraine”, and secondly, because the whole section is written in Russian, except for the word “thanks”)

A year or so ago I would say this is way too petty to the point of incompetence for them to do this.

Knowing how the country actually functions since the invasion, I wouldn't rule this out at all.