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api0cradle / UltimateAppLockerByPassList

The goal of this repository is to document the most common techniques to bypass AppLocker.
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RUNDLL32.EXE #16

Open amandaw33 opened 4 years ago

amandaw33 commented 4 years ago

heads up for me blocking %SYSTEM32%\RUNDLL32.EXE by publisher caused pinned items to stop working on win10 1809.

thanks for all your work on these rules.

api0cradle commented 4 years ago

Thanks for the info. Note that blocking rundll32 is not supported and it is kinda expected that it will break something.

amandaw33 commented 4 years ago

It's listed here, no? Sorry if I'm misunderstanding.

https://github.com/api0cradle/UltimateAppLockerByPassList/blob/master/AppLocker-BlockPolicies/PublisherBlockRules-EXE.xml

api0cradle commented 4 years ago

image

api0cradle commented 4 years ago

I have added it, but I do not recommend the blocking rules to be used actively in production without proper testing since it might actually break stuff. The most scary binary is the rundll32 for sure

amandaw33 commented 4 years ago

Thanks just wanted to make sure I wasn't misunderstanding the rules set. I did test, then moved it to prod and ran it for a week before anyone noticed 😁 cheers!