Hunt or be Hunted: Every service was unique, and that was the problem
Stacking is usually the first thing we reach for on a persistence hunt. Pull every service, autorun or scheduled task across the environment, count how many endpoints have each one, and sort ascending. The entries at the bottom, the ones that show up on one or two machines, are where you start digging. In one Tanium Customer's environment, that didn't work at all. Each endpoint returned somewhere between a hundred and five hundred rows, and almost every one of them was unique to that endpoint.