Got infected with ransomware, i think. I have just opened the “ransom note”, which states:
all ur files was encrypted.
to decrpt the files you have to should send the following code
to e-mail address matrix9643@yahoo.com.
Maybe you know how much this virus wants? I really need my files.
If you recently run into a program that displays such information, there is no doubt that your PC is compromised by ill-disposed software known as Matrix ransomware. It is a program that encrypts files and demands a ransom in exchange for decryption solution, but we do not recommend you to obey these orders because most likely they are not going to provide you with decryption tool. The ransom price ranges from 300-1000$, and it is quite a considerable amount of money that you might want to spend on something else.
You can find more details about the virus in this article: Matrix ransomware. How to Remove? (Uninstall Guide).