Windows event log · Microsoft-Windows-AppLocker/Packaged app-Execution8020 A packaged app was allowed to run

  • Defender and policy
  • 3 fields
  • Microsoft-Windows-AppLocker%4Packaged app-Execution.evtx
  • Microsoft-Windows-AppLocker

Fields EvtxECmd extracts

3 columns in the EvtxECmd CSV

  • ExecutableInfo%Package%
    • %Package% = /Event/UserData/RuleAndFileData/Package
  • PayloadData2%Fqbn%
    • %Fqbn% = /Event/UserData/RuleAndFileData/Fqbn
  • PayloadData3TargetUser
    • %TargetUser% = /Event/UserData/RuleAndFileData/TargetUser

Sample event

Event XML from the map file

<Event>
  <System>
    <Provider Name="Microsoft-Windows-AppLocker" Guid="{cbda4dbf-8d5d-4f69-9578-be14aa540d22}"/>
    <EventID>8020</EventID>
    <Version>0</Version>
    <Level>4</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x2000000000000000</Keywords>
    <TimeCreated SystemTime="2019-12-03T00:38:37.962228500Z"/>
    <EventRecordID>52605</EventRecordID>
    <Correlation/>
    <Execution ProcessID="756" ThreadID="14288"/>
    <Channel>Microsoft-Windows-AppLocker/Packaged app-Execution</Channel>
    <Computer>Thunder.cloud.corp.com</Computer>
    <Security UserID="[SID]"/>
  </System>
  <UserData>
    <RuleAndFileData xmlns="http://schemas.microsoft.com/schemas/event/Microsoft.Windows/1.0.0.0">
      <PolicyNameLength>4</PolicyNameLength>
      <PolicyName>APPX</PolicyName>
      <RuleId>{[GUID]}</RuleId>
      <RuleNameLength>39</RuleNameLength>
      <RuleName>(Default Rule) All signed Appx packages</RuleName>
      <RuleSddlLength>81</RuleSddlLength>
      <RuleSddl>D:(XA;;FX;;;S-1-1-0;((Exists APPID://FQBN) && ((APPID://FQBN) >= ({"*\*\*",0}))))</RuleSddl>
      <TargetUser>[SID]</TargetUser>
      <TargetProcessId>20176</TargetProcessId>
      <PackageLength>26</PackageLength>
      <Package>MICROSOFT.AAD.BROKERPLUGIN</Package>
      <FqbnLength>126</FqbnLength>
      <Fqbn>CN=MICROSOFT WINDOWS, O=MICROSOFT CORPORATION, L=REDMOND, S=WASHINGTON, C=US\MICROSOFT.AAD.BROKERPLUGIN\APPX\1000.18362.449.00</Fqbn>
    </RuleAndFileData>
  </UserData>
</Event>

References

2 links

Source: evtx/Maps/Microsoft-Windows-AppLocker-PackagedApp-Execution_Microsoft-Windows-AppLocker_8020.map(opens in new tab) by Troy Larson and contributors(opens in new tab), MIT License(opens in new tab)