scheduler.exe is an auto-starting process that used the Windows Task Scheduler service to load when the user logs into Windows (sometimes this is required to bypass the UAC protection). This is typically installed with the program Driver Booster published by IObit. The file is digitally signed by Cheng Du VTools Information Technology which was issued by the VeriSign certificate authority (CA). This particular version is usually found on Windows 8 (6.2.9200.0).