3 Audit Directory Service Access

pcbinary June 27, 2021 0 Comments



Use Group Policy to enable the shared security intelligence feature:


1. On your Group Policy management computer, open the Group Policy Management Console, right-click the Group Policy Object you want to configure, and then click Edit. 2. In the Group Policy Management Editor go to Computer configuration. 3. Click Administrative templates. 4. Expand the tree to Windows components > Microsoft Defender Antivirus > Security Intelligence Updates. 5. Double-click Define security intelligence location for VDI clients, and then set the option to Enabled. A field automatically appears. 6. Enter `wdav-update` (for help with this value, see Download and unpackage). 7. Click OK. 8. Deploy the GPO to the VMs you want to test.

Use PowerShell to enable the shared security intelligence feature


Use the following cmdlet to enable the feature. You’ll need to then pushthis as you normally would push PowerShell-based configuration policies ontothe VMs: Set-MpPreference -SharedSignaturesPath wdav-update See the Download and unpackage section for what the will be.

Active Directory Events to Monitor


Like all forms of infrastructure, Active Directory needs to be monitored tostay protected. Monitoring the directory service is essential for preventingcyber-attacks and delivering the best end-user experience to your users.Below we’re going to list some of the most important network events that youshould look out for. If you see any of these events then you shouldinvestigate further ASAP to make sure that your service hasn’t beencompromised.Current Windows Event ID | Legacy Windows Event ID | Description —|—|— 4618 | N/A | A security event pattern has been recognized. 4649| N/A | A replay attack was detected (potentially a false positive). 4719| 612| A system audit policy was changed. 4765| N/A | SID History added to an account. 4766| N/A | The attempt failed to add SID History to account. 4794| N/A | Attempt to launch Directory Services Restore Mode. 4897| 801| Role separation enabled. 4964 | N/A | Special groups have been assigned a new logon. 5124| N/A | Security updated on OCSP Responder Service. N/A | 550| Potential DoS attack. 1102| 517| Audit log was cleared.

Group Policies applied to a remote computer and user


To get all the policies applied to a remote computer: GPResult /s computer-name /scope computer /vTo get all the polices applied to a remote user on a remote computer GPResult /s computer-name /user username /scope user /v

What is Audit Policy?


Whenever you configure audit policy in Windows server or any client. Thispolicy will allow or help you to get information about who logged into yourcomputer? When he or she logged in or from where that user logged in. And aswell as give you information about any kinds of event that happen on thatcomputer. By configuring audit policy, you can get all this information. Toget known about these events, go to the event section then take all the info.Now, we’re going to explain the following policies.

1. Audit Account Logon Events


This security setting determines whether the OS audits each time this computervalidates an account’s credentials.Account logon events are generated whenever a computer validates thecredentials of an account for which it is authoritative. Domain members andnon-domain-joined machines are authoritative for their local accounts; domaincontrollers are all authoritative for accounts in the domain. Credentialvalidation may be in support of a local login, or, in the case of an ActiveDirectory domain account on a domain controller, may be in support of a loginto another computer. Credential validation is stateless so there is nocorresponding logoff event for account login events.Audit Account Logon EventsIf this policy setting is defined, the administrator can specify whether toaudit only successes, only failures, both successes and failures or to notaudit these events at all.

2. Audit Account Management


This security setting determines whether to audit each event of accountmanagement on a computer. Examples of account management events include: * A user account or group is created, changed, or deleted. * A user account is renamed, disabled, or enabled. * A password is set or changed.If you define this policy setting, you can specify whether to audit successes,audit failures or not audit the event type at all. Success audits generate anaudit entry when any account management event succeeds. Failure auditsgenerate an audit entry when any account management event fails. To set thisvalue to No auditing, in the Properties dialog box for this policy setting,select the Define these policy settings check box and clear the Success andFailure check boxes.Audit Account Management

3. Audit Directory Service Access


This security setting determines whether the OS audits user attempts to accessActive Directory objects. The audit is only generated for objects that havesystem access control lists (SACL) specified, and only if the type of accessrequested (such as Write, Read, or Modify) and the account making the requestmatch the settings in the SACL.The administrator can specify whether to audit only successes, only failures,both successes and failures, or to not audit these events at all (i.e. neithersuccesses nor failures). If Success auditing is enabled, an audit entry isgenerated each time any account successfully accesses a Directory object thathas a matching SACL specified.Audit Directory Service AccessIf Failure auditing is enabled, an audit entry is generated each time any userunsuccessfully attempts to access a Directory object that has a matching SACLspecified.

5. Audit Object Access


This security setting determines whether the OS audits user attempts to accessnon-Active Directory objects. The audit is only generated for objects thathave system access control lists (SACL) specified, and only if the type ofaccess requested (such as Write, Read, or Modify) and the account making therequest match the settings in the SACL.The administrator can specify whether to audit only successes, only failures,both successes and failures, or to not audit these events at all.If Success auditing is enabled, an audit entry is generated each time anyaccount successfully accesses a non-Directory object that has a matching SACLspecified.Audit Object AccessIf Failure auditing is enabled, an audit entry is generated each time any userunsuccessfully attempts to access a non-Directory object that has a matchingSACL specified. Note that you can set an SACL on a file system object usingthe Security tab in that object’s Properties dialog box.

6. Audit Policy Change


This security setting determines whether the OS audits each instance ofattempts to change user rights assignment policy, audit policy, accountpolicy, or trust policy. The administrator can specify whether to audit onlysuccesses, only failures, both successes and failures, or to not audit theseevents at all (i.e. neither successes nor failures).If Success auditing is enabled, an audit entry is generated when an attemptedchange to user rights assignment policy, audit policy, or trust policy issuccessful.Audit Policy ChangeIf Failure auditing is enabled, an audit entry is generated when an attemptedchange to user rights assignment policy, audit policy, or trust policy isattempted by an account that is not authorized to make the requested policychange.

7. Audit Privilege Use


This security setting determines whether to audit each instance of a userexercising a user right. If you define this policy setting, you can specifywhether to audit successes, audit failures or not audit this type of event atall. Success audits generate an audit entry when the exercise of a user rightsucceeds. Failure audits generate an audit entry when the exercise of a userright fails.Audit Privilege UseTo set this value to No auditing, in the Properties dialog box for this policysetting, select the Define these policy settings check box and clear theSuccess and Failure check boxes.

8. Audit Process Tracking


This security setting determines whether the OS audits process-related eventssuch as process creation, process termination, handle duplication, andindirect object access. If this policy setting is defined, the administratorcan specify whether to audit only successes, only failures, both successes andfailures, or to not audit these events at all.Audit Process TrackingIf Success auditing is enabled, an audit entry is generated each time the OSperforms one of these process-related activities. If Failure auditing isenabled, an audit entry is generated each time the OS fails to perform one ofthese activities.

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