USB Firefox Portable.exe is part of a product called known as Mozilla Firefox, Portable Edition and the developer is PortableApps.com .
If you think that this file contains a virus or another malware, please download a virus scanner.
If USB Firefox Portable.exe is using too much CPU or too much memory in your system, it is possible that your file has been infected with a virus. Installing an antivirus is recommended.
Not all processes can be uninstalled without the help of a 3rd party tool, especially malware. To see if it can be uninstalled, first go to Start > Control Panel > Add/Remove programs and select Mozilla Firefox, Portable Edition from the list to remove the process USB Firefox Portable.exe from your computer.
If you have any problems with USB Firefox Portable.exe, you may try using a registry cleaner or a speed-up software to check, analyze, and fix problems that are affecting the performance of your computer.
You may try contacting PortableApps.com, the developer of USB Firefox Portable.exe and ask for more information.