View attack surface reduction events

Important

Welcome to Microsoft Defender for Endpoint, the new name for Microsoft Defender Advanced Threat Protection. Read more about this and other updates here. We'll be updating names in products and in the docs in the near future.

Applies to:

Review attack surface reduction events in Event Viewer to monitor what rules or settings are working. You can also determine if any settings are too "noisy" or impacting your day to day workflow.

Reviewing events is handy when you're evaluating the features. You can enable audit mode for features or settings, and then review what would have happened if they were fully enabled.

This article lists all the events, their associated feature or setting, and describes how to create custom views to filter to specific events.

Get detailed reporting into events and blocks as part of Windows Security if you have an E5 subscription and use Microsoft Defender for Endpoint.

Use custom views to review attack surface reduction capabilities

Create custom views in the Windows Event Viewer to only see events for specific capabilities and settings. The easiest way is to import a custom view as an XML file. You can copy the XML directly from this page.

You can also manually navigate to the event area that corresponds to the feature.

Import an existing XML custom view

  1. Create an empty .txt file and copy the XML for the custom view you want to use into the .txt file. Do this for each of the custom views you want to use. Rename the files as follows (ensure you change the type from .txt to .xml):

    • Controlled folder access events custom view: cfa-events.xml
    • Exploit protection events custom view: ep-events.xml
    • Attack surface reduction events custom view: asr-events.xml
    • Network/ protection events custom view: np-events.xml
  2. Type event viewer in the Start menu and open Event Viewer.

  3. Select Action > Import Custom View...

    Animation highlighting Import custom view on the left of the Even viewer window

  4. Navigate to where you extracted XML file for the custom view you want and select it.

  5. Select Open.

  6. It will create a custom view that filters to only show the events related to that feature.

Copy the XML directly

  1. Type event viewer in the Start menu and open the Windows Event Viewer.

  2. On the left panel, under Actions, select Create Custom View...

    Animation highlighting the create custom view option on the Event viewer window

  3. Go to the XML tab and select Edit query manually. You'll see a warning that you can't edit the query using the Filter tab if you use the XML option. Select Yes.

  4. Paste the XML code for the feature you want to filter events from into the XML section.

  5. Select OK. Specify a name for your filter.

  6. It will create a custom view that filters to only show the events related to that feature.

XML for attack surface reduction rule events

<QueryList>
  <Query Id="0" Path="Microsoft-Windows-Windows Defender/Operational">
   <Select Path="Microsoft-Windows-Windows Defender/Operational">*[System[(EventID=1121 or EventID=1122 or EventID=5007)]]</Select>
   <Select Path="Microsoft-Windows-Windows Defender/WHC">*[System[(EventID=1121 or EventID=1122 or EventID=5007)]]</Select>
  </Query>
</QueryList>

XML for controlled folder access events

<QueryList>
  <Query Id="0" Path="Microsoft-Windows-Windows Defender/Operational">
   <Select Path="Microsoft-Windows-Windows Defender/Operational">*[System[(EventID=1123 or EventID=1124 or EventID=5007)]]</Select>
   <Select Path="Microsoft-Windows-Windows Defender/WHC">*[System[(EventID=1123 or EventID=1124 or EventID=5007)]]</Select>
  </Query>
</QueryList>

XML for exploit protection events

<QueryList>
  <Query Id="0" Path="Microsoft-Windows-Security-Mitigations/KernelMode">
   <Select Path="Microsoft-Windows-Security-Mitigations/KernelMode">*[System[Provider[@Name='Microsoft-Windows-Security-Mitigations' or @Name='Microsoft-Windows-WER-Diag' or @Name='Microsoft-Windows-Win32k' or @Name='Win32k'] and ( (EventID &gt;= 1 and EventID &lt;= 24)  or EventID=5 or EventID=260)]]</Select>
   <Select Path="Microsoft-Windows-Win32k/Concurrency">*[System[Provider[@Name='Microsoft-Windows-Security-Mitigations' or @Name='Microsoft-Windows-WER-Diag' or @Name='Microsoft-Windows-Win32k' or @Name='Win32k'] and ( (EventID &gt;= 1 and EventID &lt;= 24)  or EventID=5 or EventID=260)]]</Select>
   <Select Path="Microsoft-Windows-Win32k/Contention">*[System[Provider[@Name='Microsoft-Windows-Security-Mitigations' or @Name='Microsoft-Windows-WER-Diag' or @Name='Microsoft-Windows-Win32k' or @Name='Win32k'] and ( (EventID &gt;= 1 and EventID &lt;= 24)  or EventID=5 or EventID=260)]]</Select>
   <Select Path="Microsoft-Windows-Win32k/Messages">*[System[Provider[@Name='Microsoft-Windows-Security-Mitigations' or @Name='Microsoft-Windows-WER-Diag' or @Name='Microsoft-Windows-Win32k' or @Name='Win32k'] and ( (EventID &gt;= 1 and EventID &lt;= 24)  or EventID=5 or EventID=260)]]</Select>
   <Select Path="Microsoft-Windows-Win32k/Operational">*[System[Provider[@Name='Microsoft-Windows-Security-Mitigations' or @Name='Microsoft-Windows-WER-Diag' or @Name='Microsoft-Windows-Win32k' or @Name='Win32k'] and ( (EventID &gt;= 1 and EventID &lt;= 24)  or EventID=5 or EventID=260)]]</Select>
   <Select Path="Microsoft-Windows-Win32k/Power">*[System[Provider[@Name='Microsoft-Windows-Security-Mitigations' or @Name='Microsoft-Windows-WER-Diag' or @Name='Microsoft-Windows-Win32k' or @Name='Win32k'] and ( (EventID &gt;= 1 and EventID &lt;= 24)  or EventID=5 or EventID=260)]]</Select>
   <Select Path="Microsoft-Windows-Win32k/Render">*[System[Provider[@Name='Microsoft-Windows-Security-Mitigations' or @Name='Microsoft-Windows-WER-Diag' or @Name='Microsoft-Windows-Win32k' or @Name='Win32k'] and ( (EventID &gt;= 1 and EventID &lt;= 24)  or EventID=5 or EventID=260)]]</Select>
   <Select Path="Microsoft-Windows-Win32k/Tracing">*[System[Provider[@Name='Microsoft-Windows-Security-Mitigations' or @Name='Microsoft-Windows-WER-Diag' or @Name='Microsoft-Windows-Win32k' or @Name='Win32k'] and ( (EventID &gt;= 1 and EventID &lt;= 24)  or EventID=5 or EventID=260)]]</Select>
   <Select Path="Microsoft-Windows-Win32k/UIPI">*[System[Provider[@Name='Microsoft-Windows-Security-Mitigations' or @Name='Microsoft-Windows-WER-Diag' or @Name='Microsoft-Windows-Win32k' or @Name='Win32k'] and ( (EventID &gt;= 1 and EventID &lt;= 24)  or EventID=5 or EventID=260)]]</Select>
   <Select Path="System">*[System[Provider[@Name='Microsoft-Windows-Security-Mitigations' or @Name='Microsoft-Windows-WER-Diag' or @Name='Microsoft-Windows-Win32k' or @Name='Win32k'] and ( (EventID &gt;= 1 and EventID &lt;= 24)  or EventID=5 or EventID=260)]]</Select>
   <Select Path="Microsoft-Windows-Security-Mitigations/UserMode">*[System[Provider[@Name='Microsoft-Windows-Security-Mitigations' or @Name='Microsoft-Windows-WER-Diag' or @Name='Microsoft-Windows-Win32k' or @Name='Win32k'] and ( (EventID &gt;= 1 and EventID &lt;= 24)  or EventID=5 or EventID=260)]]</Select>
  </Query>
</QueryList>

XML for network protection events

<QueryList>
 <Query Id="0" Path="Microsoft-Windows-Windows Defender/Operational">
  <Select Path="Microsoft-Windows-Windows Defender/Operational">*[System[(EventID=1125 or EventID=1126 or EventID=5007)]]</Select>
  <Select Path="Microsoft-Windows-Windows Defender/WHC">*[System[(EventID=1125 or EventID=1126 or EventID=5007)]]</Select>
 </Query>
</QueryList>

List of attack surface reduction events

All attack surface reduction events are located under Applications and Services Logs > Microsoft > Windows and then the folder or provider as listed in the following table.

You can access these events in Windows Event viewer:

  1. Open the Start menu and type event viewer, and then select the Event Viewer result.

  2. Expand Applications and Services Logs > Microsoft > Windows and then go to the folder listed under Provider/source in the table below.

  3. Double-click on the sub item to see events. Scroll through the events to find the one you're looking.

    Animation showing using Event Viewer

Feature Provider/source Event ID Description
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 1 ACG audit
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 2 ACG enforce
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 3 Do not allow child processes audit
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 4 Do not allow child processes block
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 5 Block low integrity images audit
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 6 Block low integrity images block
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 7 Block remote images audit
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 8 Block remote images block
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 9 Disable win32k system calls audit
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 10 Disable win32k system calls block
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 11 Code integrity guard audit
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 12 Code integrity guard block
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 13 EAF audit
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 14 EAF enforce
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 15 EAF+ audit
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 16 EAF+ enforce
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 17 IAF audit
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 18 IAF enforce
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 19 ROP StackPivot audit
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 20 ROP StackPivot enforce
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 21 ROP CallerCheck audit
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 22 ROP CallerCheck enforce
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 23 ROP SimExec audit
Exploit protection Security-Mitigations (Kernel Mode/User Mode) 24 ROP SimExec enforce
Exploit protection WER-Diagnostics 5 CFG Block
Exploit protection Win32K (Operational) 260 Untrusted Font
Network protection Windows Defender (Operational) 5007 Event when settings are changed
Network protection Windows Defender (Operational) 1125 Event when Network protection fires in Audit-mode
Network protection Windows Defender (Operational) 1126 Event when Network protection fires in Block-mode
Controlled folder access Windows Defender (Operational) 5007 Event when settings are changed
Controlled folder access Windows Defender (Operational) 1124 Audited Controlled folder access event
Controlled folder access Windows Defender (Operational) 1123 Blocked Controlled folder access event
Controlled folder access Windows Defender (Operational) 1127 Blocked Controlled folder access sector write block event
Controlled folder access Windows Defender (Operational) 1128 Audited Controlled folder access sector write block event
Attack surface reduction Windows Defender (Operational) 5007 Event when settings are changed
Attack surface reduction Windows Defender (Operational) 1122 Event when rule fires in Audit-mode
Attack surface reduction Windows Defender (Operational) 1121 Event when rule fires in Block-mode