Crypto market is very strange and not necessary correlated to traditional financial market, so if there will be a global crysis it's not certain that also crypto market will suffer because the biggest coins like BITCOIN and ETH could be a good alternative to $ or EUR.
I dont really know how this will impact crypto because sometime crypto will be increasing because they will be alternative currency rather than dollars or euro. But in the other side it will be bad news for cryptocurrency since when the crisis so no much money to buy crypto then no big demand.