Since this is signed with a Microsoft certificate the following observation is probably not useful (or unexpected), but this Authenticode signature does pass kernel-mode driver signing policy checks. I still have a Windows 8.0 test system and the two images with IMAGE_DLLCHARACTERISTICS_FORCE_INTEGRITY fail there too and in the same way.ĭuring my search of the web, someone mentioned that bcrypt.dll is a (rare) example of a Windows image that has IMAGE_DLLCHARACTERISTICS_FORCE_INTEGRITY set. I think that you are probably correct that a Windows driver type signature policy must be observed. The trace shows VerificationError = 7, where 7 means "Invalid root certificate" and did a bit more research (but have not yet tried kernel debugging - it takes a long time for me to set that up at home). I traced the attempted program activation with the Microsoft-Windows-CodeIntegrity provider and enabled stack traces for the events. Set in 12,000 acres of glorious Sussex countryside, an English estate like no other - home of Festival of Speed, Qatar Goodwood Festival and much more. Many thanks for providing such safe examples! A program whose sole code consists of "xor eax,eax" and "ret" meant that I had no objections to running and testing you sample code :-) The OMEGA Speedmaster Dark Side of the Moon redefines the iconic design of the Moonwatch and its name evokes the mystery and allure of space. Hello chance, only yesterday I was playing with developing a tool that analyses and verifies Authenticode signatures and hashes (including page hashes, but completely ignoreing certificate chain policies), so I was interested to see your message. Windows-10-general windows-10-security windows-10-application-compatibility Signed files uploaded here !Auk-n3iYU349b9w1wPqWbnBwl_k?e=teN8Sc There are 3 files: signed without /INTEGRITYCHECK and without /ph, signed with /INTEGRITYCHECK and without /ph, signed with /INTEGRITYCHECK and with /ph. Maybe it's some kind of WDAC policy, but everything is default and I couldn't find any default policy that could explain this. But I couldn't find this behavior documented anywhere. I suspect that this INTEGRITYCHECK enforces not a standard signature check, but a heavy one like for drivers that require DevPortal MS signature. Besides I couldn't find anywhere that having this flag set enforces some extra/more strict checks than just a mandatory standard signature check.ĭebugging the kernel didn't show much, CiEvaluatePolicyInfo is the one failing and failing quite early. But some files in my product require this option. The only thing that helps is disabling /INTEGRITYCHECK linker option. Signing with /ph option doesn't help either. But this new Windows 10 refuses to run it.ĭisabling Windows Defender or Secure Boot doesn't help. Old versions like Windows 7, 8, the first 10 - they all start the file OK. It's a simple file, user-mode, console, does nothing, imports nothing. Signtool verify /v /pa states that everything is OK. The file could be corrupt due to unauthorized modification or the invalid hash could indicate a potential disk device error." In Event Viewer->Windows Logs->Security I can see a message "Code integrity determined that the image hash of a file is not valid. When I try to start the file the aforementioned Windows shows "Your organization used Windows Defender Application Control to block this app" screen. It's signed with GlobalSign EV SHA-256 code signature. I have a simple exe-file, it basically does nothing and just an empty stub. It's a stock Windows installed from official ISO, no other programs installed. Bitness doesn't matter either, x86 or 圆4. Microsoft Windows Įdition doesn't matter, it happens on Home, Pro N. Thanks for helping make community forums a great place.I have the latest Windows 10 with March 2021 updates. Interview project would be greatly appreciated if you have time. These drivers and firmware are not compatible with Surface RT.Īre trying to better understand customer views on social support experience, so your participation in this The Surface Pro 3 and Surface Pro 2 drivers and firmware are not compatible with Windows 8.0 (Pro and Enterprise). The Surface Pro driver pack contains drivers and firmware that are compatible with Windows 8.0 (Pro and Enterprise). These drivers and firmware are compatible with Windows 8.1 (Pro and Enterprise). To the system firmware that have been released via Windows Update. This firmware and driver package contains drivers for all of the components in the Surface Pro 3, Surface Pro 2, and Surface Pro devices, as well as updates Cumulative and current firmware and drivers for the Surface Pro 3, Surface Pro 2, and Surface Pro.
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