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Add AuditPolicyChange rule #59

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Merged
PrzemyslawKlys merged 1 commit into from
Jun 29, 2025
Merged

Add AuditPolicyChange rule #59

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27 changes: 27 additions & 0 deletions Sources/EventViewerX/Rules/Windows/AuditPolicyChange.cs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,27 @@
namespace EventViewerX.Rules.Windows;

/// <summary>
/// System audit policy was changed
/// 4719: System audit policy was changed
/// </summary>
public class AuditPolicyChange : EventObjectSlim {
public string Computer;
public string CategoryId;
public string SubcategoryId;
public string SubcategoryGuid;
public string AuditPolicyChanges;
public string Who;
public DateTime When;

public AuditPolicyChange(EventObject eventObject) : base(eventObject) {
_eventObject = eventObject;
Type = "AuditPolicyChange";
Computer = _eventObject.ComputerName;
CategoryId = _eventObject.GetValueFromDataDictionary("CategoryId");
SubcategoryId = _eventObject.GetValueFromDataDictionary("SubcategoryId");
SubcategoryGuid = _eventObject.GetValueFromDataDictionary("SubcategoryGuid");
AuditPolicyChanges = _eventObject.GetValueFromDataDictionary("AuditPolicyChanges");
Who = _eventObject.GetValueFromDataDictionary("SubjectUserName", "SubjectDomainName", "\\", reverseOrder: true);
When = _eventObject.TimeCreated;
}
}
8 changes: 8 additions & 0 deletions Sources/EventViewerX/SearchEvents.NamedEventsDetails.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -160,6 +160,11 @@ public enum NamedEvents {
/// </summary>
CertificateIssued,

/// <summary>
/// System audit policy was changed
/// </summary>
AuditPolicyChange,

/// <summary>
/// Unexpected system shutdown
/// </summary>
Expand Down Expand Up @@ -231,6 +236,7 @@ public partial class SearchEvents : Settings {
// network access
{ NamedEvents.NetworkAccessAuthenticationPolicy, (new List<int> { 6272, 6273 }, "Security") },
{ NamedEvents.CertificateIssued, (new List<int> { 4886, 4887 }, "Security") },
{ NamedEvents.AuditPolicyChange, (new List<int> { 4719 }, "Security") },
// windows OS
{ NamedEvents.OSCrash, (new List<int> { 6008 }, "System") },
{ NamedEvents.OSStartupShutdownCrash, (new List<int> { 12, 13, 41, 4608, 4621, 6008 }, "System") },
Expand Down Expand Up @@ -344,6 +350,8 @@ private static EventObjectSlim BuildTargetEvents(EventObject eventObject, List<N
return new LogsClearedOther(eventObject);
case NamedEvents.CertificateIssued:
return new CertificateIssued(eventObject);
case NamedEvents.AuditPolicyChange:
return new AuditPolicyChange(eventObject);
case NamedEvents.OSCrash:
return new OSCrash(eventObject);
case NamedEvents.OSStartupShutdownCrash:
Expand Down
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