I had this same problem with LeakTest[1].exe alsoon my WIN7 system. McAfee said that it could not remove it. So, now it's time to go "Old School". That means working from the command prompt...or DOS window for us older people. :) You don't need to install another fancy program to get rid of it. Just use the basic commands of the operating system.
Copy the path EXACTLY that McAfee gives stating the directory of the file. On my system the file was located in:
C:\Users\"USER NAME"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\PUHZ17CJ\LeakTest[1].exe
You will have to use the old command line approach to delete it. Open up a command prompt window and get to the root directory of the drive on which the file resides. This is normally C: unless you installed Windows on an alternate drive.
CD\
You should see something similar to the prompt below.
C:\>
Enter the directory path where LeakTest[1].exe resides on YOUR SYSTEM.
The command below is the directory path for MY SYSTEM and is being shown as an example.
C:\ CD Users\"USER NAME"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\PUHZ17CJ\
If you entered the path correctly you should be in that directory.
C:\Users\"USER NAME"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\PUHZ17CJ
If you're having a problem with the entire path, try changing just one or two directories at a time then do the DIR command to verify that the next directory exists and that you are spelling it correctly with and needed spaces in the directory name.
Notice that there is a DOT in the directory \Content.IE5 on my example. Don't overlook that if it exists on yours also.
Look for the file with the DIR command.
C:\Users\"USER NAME"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\PUHZ17CJ> dir
Once you see the file and verify that it's there, use the DEL command to DELETE it.
C:\Users\"USER NAME"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\PUHZ17CJ>del LeakTest[1].exe
If you get an error saying that the file can't be deleted then more than likely it has the READ ONLY attribute set on the file. We can remove that attribute with the ATTRIB command and the -R switch.
C:\Users\"USER NAME"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\PUHZ17CJ>ATTRIB -R LeakTest[1].exe
Now try to delete the file again.
C:\Users\"USER NAME"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\PUHZ17CJ>del LeakTest[1].exe
That should do it - at least it worked for me.