Month: September 2020

Where do you start with moving polcies to Intune, I don’t think there is a right or wrong answer. I decided to start with Audit Policies. For 2 reasons. I need to standardise the security event auditing on our devices and we need to update one region to help with SCCM UDA.

How to do it?

Lets look at what we have today. We have differences between the computer around the regions in what we audit. An example below.

Polciy	Europe	Americas	Asia	Pacific
Audit Logon	Success and Failure	Success and Failure	Success and Failure	Success and Failure
Audit File Share	Failure	Success and Failure	Success	Success
Audit Sensitive Privilege Use	Success and Failure	Success and Failure	Success and Failure	Success and Failure
Audit Other Policy Change Events	Success and Failure	Success and Failure	Failure	Success and Failure

We know SCCM likes us to audit Logon events to make sure you have good User Device Affinity. You also need to have a good history of the events, otherwise it can impact you UDA.

Checking the Microsoft Windows 10 1909 baseline, it likes to include these (But they do cause some noise in the event logs with impacts the SCCM UDA. Rock and a hard place anyone?)

Audit Credential Validation	Success and Failure
Audit Security Group Management	Success
Audit User Account Management	Success and Failure
Audit PNP Activity	Success
Audit Process Creation	Success
Audit Account Lockout	Failure
Audit Group Membership	Success
Audit Logon	Success and Failure
Audit Other Logon/Logoff Events	Success and Failure
Audit Special Logon	Success
Audit Detailed File Share	Failure
Audit File Share	Success and Failure
Audit Other Object Access Events	Success and Failure
Audit Removable Storage	Success and Failure
Audit Audit Policy Change	Success
Audit Authentication Policy Change	Success
Audit MPSSVC Rule-Level Policy Change	Success and Failure
Audit Other Policy Change Events	Failure
Audit Sensitive Privilege Use	Success and Failure
Audit Other System Events	Success and Failure
Audit Security State Change	Success
Audit Security System Extension	Success
Audit System Integrity	Success and Failure

Now we know what we want to audit, lets get started in Endpoint Manager. audit policies aren’t available in administrative templates (Yet). So we need to use the CSP. We can see the policies exist in ./Vendor/MSFT/Policy/Config/Audit. The CSP cover most of the audit points you will want, but we will only add the relevant ones.

https://docs.microsoft.com/en-us/windows/client-management/mdm/policy-csp-audit

Goto Devices -> Configuration Profiles. Select Add new.

Select “Windows 10 and Later” and Custom in the profile.

Select Add. Enter in the Name for the Audit Value, I add the criteria into the description.

In the OMA-URI add in ./Vendor/MSFT/Policy/Config/Audit/AccountLogon_AuditCredentialValidation

In the Data Type, Select Integer and the Value (0 Disabled, 1 Success, 2 Failure, 3 Success and Failure)

Then press Save. Repeat for the rest of the desire values.

Using the table below should get you to the 1909 Baseline.

Configuration	Set To	CSP	Data Type	Value
Audit Credential Validation	Success and Failure	./Vendor/MSFT/Policy/Config/Audit/AccountLogon_AuditCredentialValidation	Integer	3
Audit Security Group Management	Success	./Vendor/MSFT/Policy/Config/Audit/AccountManagement_AuditSecurityGroupManagement	Integer	1
Audit User Account Management	Success and Failure	./Vendor/MSFT/Policy/Config/Audit/AccountManagement_AuditUserAccountManagement	Integer	3
Audit PNP Activity	Success	./Vendor/MSFT/Policy/Config/Audit/DetailedTracking_AuditPNPActivity	Integer	1
Audit Process Creation	Success	./Vendor/MSFT/Policy/Config/Audit/DetailedTracking_AuditProcessCreation	Integer	1
Audit Account Lockout	Failure	./Vendor/MSFT/Policy/Config/Audit/AccountLogonLogoff_AuditAccountLockout	Integer	2
Audit Group Membership	Success	./Vendor/MSFT/Policy/Config/Audit/AccountLogonLogoff_AuditGroupMembership	Integer	1
Audit Logon	Success and Failure	./Vendor/MSFT/Policy/Config/Audit/AccountLogonLogoff_AuditLogon	Integer	3
Audit Other Logon/Logoff Events	Success and Failure	./Vendor/MSFT/Policy/Config/Audit/AccountLogonLogoff_AuditOtherLogonLogoffEvents	Integer	3
Audit Special Logon	Success	./Vendor/MSFT/Policy/Config/Audit/AccountLogonLogoff_AuditSpecialLogon	Integer	1
Audit Detailed File Share	Failure	./Vendor/MSFT/Policy/Config/Audit/ObjectAccess_AuditDetailedFileShare	Integer	2
Audit File Share	Success and Failure	./Vendor/MSFT/Policy/Config/Audit/ObjectAccess_AuditFileShare	Integer	3
Audit Removable Storage	Success and Failure	./Vendor/MSFT/Policy/Config/Audit/ObjectAccess_AuditRemovableStorage	Integer	3
Audit Audit Policy Change	Not configured	./Vendor/MSFT/Policy/Config/Audit/PolicyChange_AuditPolicyChange	Integer	0
Audit Authentication Policy Change	Not configured	./Vendor/MSFT/Policy/Config/Audit/PolicyChange_AuditAuthenticationPolicyChange	Integer	0
Audit MPSSVC Rule-Level Policy Change	Success and Failure	./Vendor/MSFT/Policy/Config/Audit/PolicyChange_AuditMPSSVCRuleLevelPolicyChange	Integer	3
Audit Other Policy Change Events	Not configured	./Vendor/MSFT/Policy/Config/Audit/PolicyChange_AuditOtherPolicyChangeEvents	Integer	0
Audit Sensitive Privilege Use	Success and Failure	./Vendor/MSFT/Policy/Config/Audit/PrivilegeUse_AuditSensitivePrivilegeUse	Integer	3
Audit Other System Events	Success and Failure	./Vendor/MSFT/Policy/Config/Audit/System_AuditOtherSystemEvents	Integer	3
Audit Security State Change	Success	./Vendor/MSFT/Policy/Config/Audit/System_AuditSecurityStateChange	Integer	1
Audit Security System Extension	Success	./Vendor/MSFT/Policy/Config/Audit/System_AuditSecuritySystemExtension	Integer	1
Audit System Integrity	Success and Failure	./Vendor/MSFT/Policy/Config/Audit/System_AuditSystemIntegrity	Integer	3
Audit Non Sensitive Privilege Use	Not configured	./Vendor/MSFT/Policy/Config/Audit/PrivilegeUse_AuditNonSensitivePrivilegeUse	Integer	0
Audit Other Privilege Use Events	Not configured	./Vendor/MSFT/Policy/Config/Audit/PrivilegeUse_AuditOtherPrivilegeUseEvents	Integer	0
Audit Authorization Policy Change	Not configured	./Vendor/MSFT/Policy/Config/Audit/PolicyChange_AuditAuthorizationPolicyChange	Integer	0
Audit Application Group Management	Success and Failure	./Vendor/MSFT/Policy/Config/Audit/AccountManagement_AuditApplicationGroupManagement	Integer	3
Audit IPsec Driver	Not configured	./Vendor/MSFT/Policy/Config/Audit/System_AuditIPsecDriver	Integer	0
Audit Other Object Access Events	Not configured	./Vendor/MSFT/Policy/Config/Audit/ObjectAccess_AuditOtherObjectAccessEvents

Press Save, and then assign it to your test Azure AD Group and press save.

Give it some time to apply. If you’re impatient like me, force a Sync through Settings > Accounts > Access work or school. Click your work or school account, then click Sync.

How do we know its worked? You can run the following command to see what’s change.

C:\>auditpol /get /category:* System audit policy Category/Subcategory Setting System Security System Extension Success System Integrity Success and Failure IPsec Driver Success and Failure Other System Events Success and Failure Security State Change Success Logon/Logoff Logon Success and Failure Logoff Success and Failure Account Lockout Failure IPsec Main Mode No Auditing IPsec Quick Mode No Auditing IPsec Extended Mode No Auditing Special Logon Success Other Logon/Logoff Events No Auditing Network Policy Server No Auditing User / Device Claims No Auditing Group Membership Success Object Access File System No Auditing Registry No Auditing Kernel Object No Auditing SAM No Auditing Certification Services No Auditing Application Generated No Auditing Handle Manipulation No Auditing File Share Success and Failure Filtering Platform Packet Drop No Auditing Filtering Platform Connection No Auditing Other Object Access Events Success and Failure Detailed File Share Failure Removable Storage Success and Failure Central Policy Staging No Auditing Privilege Use Non Sensitive Privilege Use No Auditing Other Privilege Use Events No Auditing Sensitive Privilege Use Success and Failure Detailed Tracking Process Creation Success Process Termination No Auditing DPAPI Activity No Auditing RPC Events No Auditing Plug and Play Events Success Token Right Adjusted Events No Auditing Policy Change Audit Policy Change Success Authentication Policy Change Success Authorization Policy Change Success MPSSVC Rule-Level Policy Change Success and Failure Filtering Platform Policy Change No Auditing Other Policy Change Events Failure Account Management Computer Account Management No Auditing Security Group Management Success Distribution Group Management No Auditing Application Group Management Success and Failure Other Account Management Events No Auditing User Account Management Success and Failure DS Access Directory Service Access No Auditing Directory Service Changes No Auditing Directory Service Replication No Auditing Detailed Directory Service Replication No Auditing Account Logon Kerberos Service Ticket Operations Success and Failure Other Account Logon Events Success and Failure Kerberos Authentication Service Success and Failure Credential Validation Success and Failure

If it hasn’t worked, check the event long. Look in the event log. Applications and Services Logs > Microsoft > Windows > DeviceManagement-Enterprise-Diagnostic-Provider. Look for any errors. Most of my errors were either missing a character or adding a space to the end of the OMA-URI.