This script is Copyright (C) 2009-2013 Tenable Network Security, Inc.
The remote host may be compromised.
Regardless of the request that's made, the remote web server returns a
Microsoft executable. This is highly suspicious and may be indication
of a worm. For example, the Conficker.A / Downadup worm is known to
propagate in this fashion.
Check the host and disinfect / reinstall it if necessary.
Risk factor :
Critical / CVSS Base Score : 10.0