browser_broker.exe is a application which is most likely NOT a virus or malware. So, if browser_broker.exe is on your system, it is most likely ok, and will NOT be a cause for concern. Even if your PC is clean, it is still recommended to run a well-known antivirus with a good detection rate, in order to defend your PC against viruses and malware.
Usually, this application is stored in C:\WINDOWS\system32\browser_broker.exe.
The MD5 checksum for this executable is 90c80ec09679810b2eaf2045a26b197e.
This program does NOT run as a Windows service. This is normally a good sign.
browser_broker.exe seems to have something to do with Windows SFC (System File Checker) or Windows File Protection.
64-bit code has been detected. This exe can put to good use the full power of a current PC processor.
browser_broker.exe has a digital signature. Today the large majority of clean software applications are digitally signed.
The digital signature extracted from browser_broker.exe verifies as ok. This is excellent.
Digital certificate name: Microsoft Windows
Certificate's issuer name: Microsoft Windows Production PCA 2011
This application does NOT have an uninstall routine set up in registry.