Knowing little or nothing about Bitcoin myself, I went looking for more information and found
this Wikihow on "How to use Bitcoin". According to that article
Since there are only 21 million bitcoins that will ever be created, each bitcoin should rise in value over time
Basic economic theory then kicks in and would hold that given a limited or fixed supply of an item any increase in demand will be accompanied by a corresponding increase in the value or cost of the item.
According to the
Bitcoin Calculator the current price of a bitcoin is $1666.45 USD. That yields the total Bitcoin economy at a value of $34,995,450,000 USD. The answer to your question then becomes, will Wanacry ransom payments rise to a level sufficient to have an effect on a $35 Billion dollar economy. (That places Bitcoin as roughly the 96th largest economy in the world and larger than 115 or 116 nations.) I will leave it to you to guesstimate what if any effect Wanacry would have on the Bitcoin economy.