One of our clients picked up some sort of infection over the weekend. The sucker was persistent, and after running the usual battery of utilities -- RootkitRevealer, SDFix, ComboFix, Stinger running inside a WinXP PE shell -- we got rid of the thing.
When I checked the post-infection System Event Viewer log, however, I got an interesting message:
The At46.job command failed to start due to the following error:
The system cannot find the file specified.