The jrun.exe could be a JRun JAR Launcher.
This file is part of Macromedia JRun Application Server. Jrun.exe is developed by Macromedia Inc. It’s a hidden file. Jrun.exe is usually located in the %PROGRAM_FILES% sub-folder and its usual size is 53,248 bytes.
Disable and delete the jrun.exe process as soon as possible. Most likely it is a virus, a trojan, or some other malware.
Author: Macromedia IncProcess: JRun JAR LauncherPart Of: Macromedia JRun Application ServerCommon path(s): subfolder in %PROGRAM_FILES%Keywords(s): hiddenFilesize(s): 53,248 bytes, 61,440 bytes