A WDAC audit-mode policy that will log all non-Windows-signed PE loads

Non_Microsoft_UserMode_Load_Audit.xml

<?xml version="1.0" encoding="utf-8"?>
<SiPolicy xmlns="urn:schemas-microsoft-com:sipolicy">
  <VersionEx>10.0.1.0</VersionEx>
  <PolicyID>{A244370E-44C9-4C06-B551-F6016E563076}</PolicyID>
  <BasePolicyID>{A244370E-44C9-4C06-B551-F6016E563076}</BasePolicyID>
  <PlatformID>{2E07F7E4-194C-4D20-B7C9-6F44A6C5A234}</PlatformID>
  <Rules>
    <Rule><Option>Enabled:Unsigned System Integrity Policy</Option></Rule>
    <Rule><Option>Enabled:Audit Mode</Option></Rule>
    <Rule><Option>Enabled:Advanced Boot Options Menu</Option></Rule>
    <Rule><Option>Enabled:UMCI</Option></Rule>
    <Rule><Option>Enabled:Inherit Default Policy</Option></Rule>
    <Rule><Option>Enabled:Update Policy No Reboot</Option></Rule>
    <Rule><Option>Disabled:Script Enforcement</Option></Rule>
  </Rules>
  <!--EKUS-->
  <EKUs>
    <EKU ID="ID_EKU_WINDOWS"  Value="010A2B0601040182370A0306" />
    <EKU ID="ID_EKU_WHQL"     Value="010A2B0601040182370A0305" />
    <EKU ID="ID_EKU_ELAM"     Value="010A2B0601040182373D0401" />
    <EKU ID="ID_EKU_HAL_EXT"  Value="010a2b0601040182373d0501" />
    <EKU ID="ID_EKU_RT_EXT"   Value="010a2b0601040182370a0315" />
    <EKU ID="ID_EKU_STORE"    Value="010a2b0601040182374c0301" FriendlyName="Windows Store EKU - 1.3.6.1.4.1.311.76.3.1 Windows Store" />
    <EKU ID="ID_EKU_DCODEGEN" Value="010A2B0601040182374C0501" FriendlyName="Dynamic Code Generation EKU - 1.3.6.1.4.1.311.76.5.1"     />
    <EKU ID="ID_EKU_AM"       Value="010a2b0601040182374c0b01" FriendlyName="AntiMalware EKU - 1.3.6.1.4.1.311.76.11.1"                />
  </EKUs>
  <!--Signers-->
  <Signers>
    <Signer ID="ID_SIGNER_WINDOWS_PRODUCTION_USER" Name="Microsoft Product Root 2010 Windows EKU">
      <CertRoot Type="Wellknown" Value="06" />
      <CertEKU ID="ID_EKU_WINDOWS" />
    </Signer>
    <Signer ID="ID_SIGNER_ELAM_PRODUCTION_USER" Name="Microsoft Product Root 2010 ELAM EKU">
      <CertRoot Type="Wellknown" Value="06" />
      <CertEKU ID="ID_EKU_ELAM" />
    </Signer>
    <Signer ID="ID_SIGNER_HAL_PRODUCTION_USER" Name="Microsoft Product Root 2010 HAL EKU">
      <CertRoot Type="Wellknown" Value="06" />
      <CertEKU ID="ID_EKU_HAL_EXT" />
    </Signer>
    <Signer ID="ID_SIGNER_WHQL_SHA2_USER" Name="Microsoft Product Root 2010 WHQL EKU">
      <CertRoot Type="Wellknown" Value="06" />
      <CertEKU ID="ID_EKU_WHQL" />
    </Signer>
    <Signer ID="ID_SIGNER_WHQL_SHA1_USER" Name="Microsoft Product Root WHQL EKU SHA1">
      <CertRoot Type="Wellknown" Value="05" />
      <CertEKU ID="ID_EKU_WHQL" />
    </Signer>
    <!-- Flighting related signers -->
    <Signer ID="ID_SIGNER_WINDOWS_FLIGHT_ROOT_USER" Name="Microsoft Flighting Root 2014 Windows EKU">
      <CertRoot Type="Wellknown" Value="0E" />
      <CertEKU ID="ID_EKU_WINDOWS" />
    </Signer>
    <Signer ID="ID_SIGNER_ELAM_FLIGHT_USER" Name="Microsoft Flighting Root 2014 ELAM EKU">
      <CertRoot Type="Wellknown" Value="0E" />
      <CertEKU ID="ID_EKU_ELAM" />
    </Signer>
    <Signer ID="ID_SIGNER_HAL_FLIGHT_USER" Name="Microsoft Flighting Root 2014 HAL EKU">
      <CertRoot Type="Wellknown" Value="0E" />
      <CertEKU ID="ID_EKU_HAL_EXT" />
    </Signer>
    <Signer ID="ID_SIGNER_WHQL_FLIGHT_SHA2_USER" Name="Microsoft Flighting Root 2014 WHQL EKU">
      <CertRoot Type="Wellknown" Value="0E" />
      <CertEKU ID="ID_EKU_WHQL" />
    </Signer>
    <Signer ID="ID_SIGNER_WHQL_MD5_USER" Name="Microsoft Product Root WHQL EKU MD5">
      <CertRoot Type="Wellknown" Value="04" />
      <CertEKU ID="ID_EKU_WHQL" />
    </Signer>
    <Signer ID="ID_SIGNER_STORE" Name="Microsoft MarketPlace PCA 2011">
      <CertRoot Type="TBS" Value="FC9EDE3DCCA09186B2D3BF9B738A2050CB1A554DA2DCADB55F3F72EE17721378" />
      <CertEKU ID="ID_EKU_STORE" />
    </Signer>
    <Signer ID="ID_SIGNER_RT_PRODUCTION" Name="Microsoft Product Root 2010 RT EKU">
      <CertRoot Type="Wellknown" Value="06" />
      <CertEKU ID="ID_EKU_RT_EXT" />
    </Signer>
    <Signer ID="ID_SIGNER_RT_FLIGHT" Name="Microsoft Flighting Root 2014 RT EKU">
      <CertRoot Type="Wellknown" Value="0E" />
      <CertEKU ID="ID_EKU_RT_EXT" />
    </Signer>
    <Signer ID="ID_SIGNER_RT_STANDARD" Name="Microsoft Standard Root 2001 RT EUK">
      <CertRoot Type="Wellknown" Value="07" />
      <CertEKU ID="ID_EKU_RT_EXT" />
    </Signer>
    <Signer ID="ID_SIGNER_DRM" Name="MincryptKnownRootMicrosoftDMDRoot2005">
      <CertRoot Type="Wellknown" Value="0C" />
    </Signer>
    <Signer ID="ID_SIGNER_DCODEGEN" Name="MincryptKnownRootMicrosoftProductRoot2010">
      <CertRoot Type="Wellknown" Value="06" />
      <CertEKU ID="ID_EKU_DCODEGEN" />
    </Signer>
    <Signer ID="ID_SIGNER_AM" Name="MincryptKnownRootMicrosoftStandardRoot2011">
      <CertRoot Type="Wellknown" Value="07" />
      <CertEKU ID="ID_EKU_AM" />
    </Signer>
  </Signers>
  <SigningScenarios>
    <!--Kernel Mode Signing Scenario-->
    <SigningScenario Value="131" ID="ID_SIGNINGSCENARIO_KMCI" FriendlyName="Kernel Mode Signing Scenario">
      <ProductSigners />
    </SigningScenario>

    <!--User Mode Signing Scenario-->
    <SigningScenario Value="12" ID="ID_SIGNINGSCENARIO_UMCI" FriendlyName="User Mode Signing Scenario">
      <ProductSigners>
        <AllowedSigners>
          <AllowedSigner SignerId="ID_SIGNER_WINDOWS_PRODUCTION_USER" />
          <AllowedSigner SignerId="ID_SIGNER_ELAM_PRODUCTION_USER" />
          <AllowedSigner SignerId="ID_SIGNER_HAL_PRODUCTION_USER" />
          <AllowedSigner SignerId="ID_SIGNER_WHQL_SHA2_USER" />
          <AllowedSigner SignerId="ID_SIGNER_WHQL_SHA1_USER" />
          <AllowedSigner SignerId="ID_SIGNER_WHQL_MD5_USER" />
          <AllowedSigner SignerId="ID_SIGNER_WINDOWS_FLIGHT_ROOT_USER" />
          <AllowedSigner SignerId="ID_SIGNER_ELAM_FLIGHT_USER" />
          <AllowedSigner SignerId="ID_SIGNER_HAL_FLIGHT_USER" />
          <AllowedSigner SignerId="ID_SIGNER_WHQL_FLIGHT_SHA2_USER" />
          <AllowedSigner SignerId="ID_SIGNER_STORE" />
          <AllowedSigner SignerId="ID_SIGNER_RT_PRODUCTION" />
          <AllowedSigner SignerId="ID_SIGNER_DRM" />
          <AllowedSigner SignerId="ID_SIGNER_DCODEGEN" />
          <AllowedSigner SignerId="ID_SIGNER_AM" />
          <AllowedSigner SignerId="ID_SIGNER_RT_FLIGHT" />
          <AllowedSigner SignerId="ID_SIGNER_RT_STANDARD" />
        </AllowedSigners>
      </ProductSigners>
    </SigningScenario>
  </SigningScenarios>

  <UpdatePolicySigners />

  <CiSigners>
    <CiSigner SignerId="ID_SIGNER_STORE" />
  </CiSigners>
  <HvciOptions>0</HvciOptions>
  <Settings>
    <Setting Provider="PolicyInfo" Key="Information" ValueName="Name">
      <Value>
        <String>DefaultWindowsAudit</String>
      </Value>
    </Setting>
    <Setting Provider="PolicyInfo" Key="Information" ValueName="Id">
      <Value>
        <String>031017</String>
      </Value>
    </Setting>
  </Settings>
</SiPolicy>