So, I run full system scans on my family PC automatically each day. I have not checked these scans in a while, but I was on the computer today which is uncommon for me to do. I saw that there was an alert from February 5th of this year that there had been a virus detected and automatically moved to the virus chest. Upon searching the name of this virus "EQNEDT32.EXE" I saw that it had limited search results except a few dodgy ones. A dodgy one is better than no information and I saw that this virus turns out to be a severe trojan. So, since avast has automatically quarantined this and malwarebytes has so far (currently running a scan) not found anything, should there be any reason to worry about?
If you have any previous knowledge about this infection, whether or not it is a false positive or steps to cleaning my family's PC I'd greatly appreciate your help.