I got infected with this  hairullah@inbox(dot)lv 3-4 days ago and I have been infected with a different ransomeware before, so I make a system backup of my most important files on a regular basis, now. That saved me! I like to click on ads that are interesting to me to be honest - probably how I got infected…
I have Avira Free anti-virus, but I guess it doesn’t have real-time protection – I will try these Malwarebytes and Spyhunter programs to see if I have removed the nasty Trojan completely.
My advice is to make a backup, periodically on an external hard drive or storage device! It helps a ton!