It relates to all foreign registered aircraft operating in Russia, M reg or not.
If they think you are doing an illegal charter customs will come down on you like a ton of bricks. As DD said above if you have a Russian agent paying off the right people then all should go well.
The fine by the way is 10% of the aircrafts value in cash, so assuming your "Global-Global" name relates to the aircraft you operate then that could be a big payday for someone.