Ransomware is a kind of malware which is designed to Block access to the computing system or can lock your system until an amount of money is paid through Internet banking. Malware Researcher ‘Octavian Minea’from Bitdefender has been infecting PCs around the world and effectively holding the files within for ransom. After installation it immediately adds itself to the Startup folder with a random name. Then it tries to establish connection with its command and control server on remote location using the Internet and send a 192 byte encrypted packet.
Source: https://thehackernews.com/2013/10/Cryptolocker-Ransomware-Bitcoin-malware-remove-software.html