I am trying to get process information for my windows machine, but one of the processes is returning a null value for the ExecutablePath. However, through Process Explorer I can see the Path, but I'm unsure if PE is getting this information another way. The code works for other processes. My code is below:

use Win32::OLE;

my $objWMIService;
unless ($objWMIService = Win32::OLE->GetObject("winmgmts:{impersonatio
+nLevel=impersonate}!\\\\.\\root\\cimv2"))
{
    print("Could not connect to WMI Service on localhost while attempt
+ing to collect a remote item.  The error returned was: " . Win32::OLE
+->LastError() . ".");
}
my $colItems;
unless($colItems= $objWMIService->ExecQuery("SELECT * FROM Win32_Proce
+ss", "WQL",0x10 | 0x20))
#unless($colItems= $objWMIService->ExecQuery("SELECT * FROM Win32_Proc
+ess"))
{
    print("Could not extract notification query from WMI Service on lo
+calhost . The error returned was: " . Win32::OLE->LastError() . ".");
}

foreach my $objItem (in $colItems) 
{
    if(defined($objItem->{CommandLine})  && ($objItem->{CommandLine} =
+~ /^.*[Ss][Mm][Ss][Ss]\.[Ee][Xx][Ee]$/))
    {
        print "#################################################\n";
        print "CommandLine: '" . $objItem->{CommandLine} . "'.\n";
        print "ExecutablePath: '" . $objItem->{ExecutablePath} . "'.\n
+";
        print "Name: '" . $objItem->{Name} . "'.\n";
        print "Caption: '" . $objItem->{Caption} . "'.\n";
        print "#################################################\n";
    }
}
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Output:

 
perl process.pl
#################################################
CommandLine: '\SystemRoot\System32\smss.exe'.
ExecutablePath: ''.
Name: 'smss.exe'.
Caption: 'smss.exe'.
#################################################
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I expect to see 'ExecutablePath: C:\Windows\System32\smss.exe'. Any help would be greatly appreciated.