Looking for Complete image backup solution

Unfortunately, we have employees that will click on anything and we got hit with the cryptovirus four times in a week.  Thank fully we had their files backed up but to reinstall OS, drivers and all software is  a time consuming affair.  I'm looking for a solution that will backup the image when i initially complete setup and also do scheduled backups through out the month.  I have the SAN, but looking for a good cheap software package