Yes, Molchat Doma is definitely a goth band because most of their albums belong to the Coldwave genre, which is a core subgenre of goth music. Albums like С Крыш Наших Домов / S krish nashih domov, Этажи / Etazhi , and Монумент / Monument are examples of their goth sound.
Some of the other goth artists that are similar to them are French Police, Lebanon Hanover, and Nürnberg.
Molchat Doma is located in Belarus, Minsk, active in 2017 — present. You can find more information about Molchat Doma on their GothDB band page.