Research is suggesting that the number of ransomware incidents has risen in 2019. The payment method of choice for the majority of this cybercrime is cryptocurrency, predominantly bitcoin. Could BTC price fluctuations be linked to the increase in this online nefarious activity?
https://bitcoinist.com/could-ransomware-be-driving-up-bitcoin-prices/I believe this ransomware does not contribute to the price fluctuation of Bitcoin. I think that the BTC paid were automatically converted into different altcoin particularly altcoins with privacy feature, Aside from that, I do not think that the demand cost by this pepetruators have the capability to push the price of Bitcoin up.