Hi joaochagas, could be legitmate, some systems have a boot.exe to speed up the boot or assist it in someway.
If your system is running fine and you have no problems.
use hijackthis to see if you have any nasties remember If in doubt don't touch but check for spyware
Download from here and also post the log for ananalyses that you can do yourself.
http://www.hijackthis.de/There is also windows startup inspector /monitor
http://www.windowsstartup.com/startupinspector.phphttp://www.windowsstartup.com/Extract:
Any program that must run before the Win32 subsystem is started (around the time the logon box appears) must be a native application. The most visible example of a native application is the "autochk" program that runs chkdsk during the initialization
In this article describes how native applications are built and how they work.
for example
Autochk runs in between the time that NT's boot and system start drivers are loaded, and when paging is turned on.
At this point in the boot sequence Session Manager (smss.exe) is getting NT's user-mode environment off-the-ground and no other programs are active. The HKLM\System\CurrentControl
Set\Contro
l\Session Manager\BootExecute value
http://technet.microsoft.com/en-us/sysinternals/bb897447.aspxHope that assists you.
If you're not sure about the hijackthis log just post it back here using the code below the your comments box.
Merete
