This file is a harmful and undesirable program. Probably virus. It's recommended to delete it.
What is stisrv.exe Windows startup process
File name: stisrv.exe
Program name: stisrv
Description: RBOT.BQF WORM
Information added by: ratch at 16 July 2008
Hint: If stisrv.exe file is a virus or trojan, we recommend to use a antivirus software or registry cleaner.
We are presenting list of Windows processes, startup files.
Name of stisrv.exe is stisrv. Some of them are viruses, so you should use a antivirus program.