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Re: Defense in depth -- the Microsoft way (part 47): "AppLocker bypasses are not serviced via monthly security roll-ups"


From: "Stefan Kanthak" <stefan.kanthak () nexgo de>
Date: Sun, 26 Mar 2017 22:50:40 +0200

I wrote Tuesday, March 21, 2017 8:09 PM:

[ ...snip... ]

Mitigation:
~~~~~~~~~~~

Create an "AppCert.Dll" that exports CreateProcessNotify and
set the following registry entry

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\AppCertDlls]
"AppCert.Dll"="<path>\AppCert.Dll"

[ ...snip... ]

If you can't create an "AppCert.Dll" from the code I depicted or
don't know how to implement the function "forbidden()" yourself:
just visit <https://skanthak.homepage.t-online.de/appcert.html>,
read it and get the prebuilt DLLs plus their .INF setup script,
packaged in a .CAB archive.

enjoy
Stefan Kanthak

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