Visual Studio Set Up Project (or Wix) and Add Host Entry

I want to add a host entry inside C:\Windows\System32\drivers\etc\hosts file. Is it possible with Visual Studio Set Up Project?

I have also tried with Wix with the following but not working?

    <CustomAction Id='ExecAddHostEntry' 
Directory="INSTALLDIR" 
Execute="deferred" 
ExeCommand='cmd.exe /k "@echo off &amp; SET NEWLINE=^&amp; echo. &amp; FIND /C /I """a.com""" %WINDIR%\system32\drivers\etc\hosts ^&amp; ^ IF %ERRORLEVEL% NEQ 0 ^&amp; ^ ECHO %NEWLINE%^   127.0.0.1   a.com>>%WINDIR%\System32\drivers\etc\hosts ^&amp; ^ exit"' Return="check" Impersonate="no">
</CustomAction>

Update: cmd.exe /Q /C "find /I """a.com""" aa > nul || echo/& echo 127.0.0.1 a.com>>aa" command helped me