Getting user name/password of the logged in user in Windows

var wmiService, compSystem;


wmiService = GetObject("winmgmts:{impersonationLevel=impersonate}!\\.\root\cimv2");
// the '.' denotes local system, it can be replaced with the name of the remote machine

compSystem = wmiService.ExecQuery("Select * from Win32_ComputerSystem");

var enumItems = new Enumerator(compSystem);

for (; !enumItems.atEnd(); enumItems.moveNext())
{
    var item = enumItems.item();
    WScript.echo("Logged in user: " + item.UserName);
}