On Fri, Jan 29, 2021 at 6:39 AM lapin noel <sholapin...@gmail.com> wrote:
>
> I'm afraid there is the same info, but I couldn't find one in short browsing, 
> so I post here.
>
> When MS Windows Security/Defender(MSWS) validates heap integrity, the agent 
> crashes.
> And when MSWS does not validate, the agent runs without an error.
>
> The agent is run as admin.
>
> The MSWS settings are the following.
> In "App & browser control", in "Exploit protection settings", the "System 
> settings" are all set as "On by default".
> Where the "System settings" are: Control flow, Data Execution, Force 
> randomization, Radomize memory, High-entropy, Validate exception, Validate 
> heap.
> In "Program settings", one program is added to customize.
> The only customized program is C:/Program Files (x86)/ossec-agent/win32ui.exe.
> By "Edit", many settings can be selected by square checkboxes.
> Where only one check box is selected - "Validate heap integrity".
> The default system settings are "On" by the "System settings" stated above.
>
> When the slide button is left-side "Off", win32ui.exe runs without an error.
> The normal agent window appears.
>
> When the slide button is right-side "On", win32ui.exe crashes.
> MS Diagnostic Data Viewer reports as follows.
> (---
> win32ui.exe
>
> Description
> Faulting Application Path: C:\Program Files (x86)\ossec-agent\win32ui.exe
> Creation Time: 1/29/2021 5:20:39 PM
> Problem: Stopped working
> Status: Report sent
>
> Problem signature
> Problem Event Name: APPCRASH
> Application Name: win32ui.exe
> Application Version: 0.0.0.0
> Application Timestamp: 5e6e6eec
> Fault Module Name: StackHash_cee3
> Fault Module Version: 10.0.19041.662
> Fault Module Timestamp: 5f641e44
> Exception Code: c0000374
> Exception Offset: PCH_A5_FROM_ntdll+0x00071BDC
>
> Extra information about the problem
> Bucket ID: e0bfa8051f9ebad1ac54b45abee71e8d (2041454832948551309)
> ---)
>
> Windows 10 Home, version 20H2, build 19042.746
> ossec-agent-win32-3.6.0-12032.exe 1,604,775 bytes
> win32ui.exe 171,709 bytes
>


Hi!
I've seen similar crashes, but don't have a reliable windows machine
to try and debug them (and I don't know how to do that on Windows).
It's just been the gui interface that didn't work for me though, the
agent itself ran if I configured it manually.
Dan

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