If you think that this file contains a virus or another malware, please download a virus scanner.
If RUX3EAC.tmp is using too much CPU or too much memory in your system, it is possible that your file has been infected with a virus. Try to install an antivirus to see if it helps.
If you want to remove RUX3EAC.tmp from your computer, just go to Start > Control Panel > Add/Remove programs and select 1C:Platform V8.0 from the list.
You may try contacting 1C, the developer of RUX3EAC.tmp and ask for more information.