There's signs that a few state actors are using cryptocurrencies to bypass sanctions and/or move wealth otherwise frozen. North Korea, Russia, Iran, etc.
And since sanctions make it hard(er) for them to buy crypto with fiat in the large amounts they need, it makes sense for them to steal it, or buy stolen assets.
They were at this long before crypto. Look up "Bangladesh Bank robbery", for example, where NK hackers attempted to steal almost $1 billion from the Bangladesh central bank in 2016 (and were partially successful).