This file is a harmful and undesirable program. Probably virus. It's recommended to delete it.
What is aux.exe Windows startup process
File name: aux.exe
Program name: aux.exe
Description: ZINS TROJAN
Information added by: andramelch at 06 February 2009
Hint: If aux.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 aux.exe is aux.exe. Some of them are viruses, so you should use a antivirus program.