It will affect all market and not only the cryptocurrency market. No financial markets does well when there is war ongoing because all investors will be scared and prefer to hold fiats during this time because no one knows how long or impactful the war is going to be.
Not all, only highly speculative financial markets like stocks and cryptocurrencies are affected and at risk of being dumped. Meanwhile, assets such as gold and government bonds(US), which are considered safe havens will benefit.
There are also many other assets and investments that will benefit, and that depends on the scale of the war, the countries involved...For example, stocks of companies that produce weapons will benefit because demand for weapons will increase or oil...