While looking back through a user's older EtreCheck report, posted online
I see reference to DesktopServicesHelper in the report's context; in a Mac's
System library (path/sentence below, from 'Go To Folder' via Go, in Finder)
In your case, you may be able to force-quit the process. Or go hunting with
Console utility and/or terminal to ferret it out? (Perhaps bad idea, at that!)
A modern EtreCheck utility may help remove this item.
"..Jun 22, 2015, 10:36:21 PM
/Library/Logs/DiagnosticReports/DesktopServicesHelper_2015-06-22-223621_[redacted].cpu_resource.diag.."

Hadn't checked a more recent system, for this item in Library logs (where ~Library is usually shown as path.)
[Not sure if this gives any decisive clues!]
