Bitcoin virus is a term used to identify several versions of malware known as ransomware and cryptoviruses. The Bitcoin viruses will utilize a ransom payment system and ask victims to make a payment by using Bitcoin currency. There are many variants of this ransomware, including shit, zepto, odin, and others that ask victims to pay a ransom via Bitcoins.
Bitcoin ransomware is a very dangerous computer virus that encrypts files and holds them for ransom. Once the ransomware has encrypted files on a computer it will download a ransom note in each folder it encrypted files in. The ransom note typically explains what happened to the encrypted files and describes the malware authors method to pay a ransom in order to obtain a decryption key. The author will usually ask to pay via a payment system on a Tor network site or email a specific email address. The ransomware may also display a lock-screen that restricts access to the infected machine and change the background of Windows desktop to an image of the ransom note.