Getting notifications "[SID: 29714] System Infected: Trojan.Snifula Activity 9 detected"

Hi,

We have SEP 12.1.7 running in our environment and on one of computers we are constantly getting the error "[SID: 29714] System Infected: Trojan.Snifula Activity 9 detected". I have attached the screenshot for reference. Can anyone tell more about this error and how may i be able to remove it? Running a full scan is of no help evidently and as it only shows tracking cookies in Risk Log. I have attached the results of Full Scan as well.

Thanks.