On Fri, Apr 03, 2020 at 14:56:05 -0400, Nathan Stratton Treadway wrote:
> However, when I search under c:\windwos\, the tap0901.sys files found
> are different:
> 
> =====
> C:\Windows>dir /s tap0901.*
>  Volume in drive C is Windows
>  Volume Serial Number is 0687-5D0C
> 
>  Directory of C:\Windows\System32\drivers
> 10/31/2019  02:09 AM            30,720 tap0901.sys
>                1 File(s)         30,720 bytes
> 
>  Directory of 
> C:\Windows\System32\DriverStore\FileRepository\oemvista.inf_amd64_6d4bec28a2ef0cdf
> 10/31/2019  02:11 AM            10,042 tap0901.cat
> 10/31/2019  02:09 AM            30,720 tap0901.sys
>                2 File(s)         40,762 bytes
> 
>      Total Files Listed:
>                3 File(s)         71,482 bytes
>                0 Dir(s)  79,828,119,552 bytes free
> =====
> 

Just to wrap up some a few loose ends: the 10,042-byte tap0901.cat file
from the DriverStore... directory _does_ seem to have the unwanted
"OpenVPN, Inc." signature:

=====
$ ls -l failed_DriverStore_oemvista.inf_amd64_6d4bec28a2ef0cdf_tap0901.cat 
-rw-rw-r-- 1 nathanst nathanst 10042 Apr  3 16:22 
failed_DriverStore_oemvista.inf_amd64_6d4bec28a2ef0cdf_tap0901.cat

$ sha1sum failed_DriverStore_oemvista.inf_amd64_6d4bec28a2ef0cdf_tap0901.cat 
d99e38968de1ca1850971a2b81bfdab49626aaed  
failed_DriverStore_oemvista.inf_amd64_6d4bec28a2ef0cdf_tap0901.cat

$ strings failed_DriverStore_oemvista.inf_amd64_6d4bec28a2ef0cdf_tap0901.cat | 
grep "OpenVPN\|Code Sign"
"DigiCert EV Code Signing CA (SHA2)0
OpenVPN Inc.1
OpenVPN Inc.0
"DigiCert EV Code Signing CA (SHA2)0
"DigiCert EV Code Signing CA (SHA2)

=====


As I mentioned in the previous email, the
emvista.inf_amd64_6d4bec28a2ef0cdf has a timestamp which coincides with
the moment that the OpenVPN installer was being run.

However, I noticed that the oem43.inf file does have an earlier
timestamp:

=====
Directory of c:\windows\inf
03/26/2020  04:03 PM             7,537 oem43.inf
03/27/2020  11:09 AM             8,828 oem43.PNF
=====

... though weirdly Windows on that box was reinstalled in the _morning_ of
3/26, and 16:03 doesn't correspond to any entries at all in the
setupapi.dev.log file (which jumps from 2020/03/26 12:30:18 in one entry
to 2020/03/27 07:50:45 in the next).  So it doesn't quite seem like
oem43.inf would have been created during the initial reinstall of
Windows, but I also don't know what would have created it later that
day...

The c:\windows\inf\oem43.inf file is identical to the one in C:\Program
Files\TAP-Windows\driver:

=====
$ sha1sum failed_windows-inf_oem43.inf failed_program-files_OemVista.inf 
d85f4e65fe10f13ded1780ddbd074edfc75f2d25  failed_windows-inf_oem43.inf
d85f4e65fe10f13ded1780ddbd074edfc75f2d25  failed_program-files_OemVista.inf
=====

... but I suppose that might just indicate that the Win7 and Win10
versions of that file are identical (if in fact the \windows\inf\ copy
came from the Win7 drivers somehow).


                                                Nathan


----------------------------------------------------------------------------
Nathan Stratton Treadway  -  natha...@ontko.com  -  Mid-Atlantic region
Ray Ontko & Co.  -  Software consulting services  -   http://www.ontko.com/
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