The basic information about KeyHolder
KeyHolder as ransomware encrypts the computer with AES encryption and pinches users for 1.5 bitcoins to get a decrypting file. When the malware is installed in the computer, it will scan your data automatically. Once finding data files, it will encrypt them immediately. You will not have access to visit the files. At this time, you will receive a box jumping onto your screen that suggests you to pay for the decrypting code. The picture below shows the condition.