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mehmetbaaran-3810 asked FeiXue-MSFT answered

How can i write windows security log using AuthzReportSecurityEvent function same format system audit log

I want to write the logs in the windows security log and add my own custom writing (audit/logon) logs to the windows secuirty logs in the correct format so my goal is that a agent that allows some operations can be read this log and process it.
When I investigated how I could do this, I saw that I could do it by using the AuthzReportSecurityEvent function after making the necessary policy settings, I use the following code snippet to generate my own logs(audit/logon log), but these logs have schemantic differences from the original logon logs, for example, I cannot add a "name" field when printing text in the data field, but in the original log have this field. You can see the differences between the two logs by looking at the logs below and the original field available.
What I want to do is that the log I produced is the same as the original log.

 #include <stdio.h>
 #include <iostream>
 #include <string>
 #include <strsafe.h>
 #include <windows.h>
 #include <Authz.h>
 #include <Ntsecapi.h>
 #pragma comment(lib,"Authz.lib")
 #pragma comment(lib,"Advapi32.lib")
 BOOL SetPrivilege(
     HANDLE hToken,          // access token handle
     LPCTSTR lpszPrivilege,  // name of privilege to enable/disable
     BOOL bEnablePrivilege   // to enable or disable privilege
     LUID luid;
     if (!LookupPrivilegeValue(
         NULL,            // lookup privilege on local system
         lpszPrivilege,   // privilege to lookup
         &luid))        // receives LUID of privilege
         printf("LookupPrivilegeValue error: %u\n", GetLastError());
         return FALSE;
     tp.PrivilegeCount = 1;
     tp.Privileges[0].Luid = luid;
     if (bEnablePrivilege)
         tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
         tp.Privileges[0].Attributes = 0;
     // Enable the privilege or disable all privileges.
     if (!AdjustTokenPrivileges(
         printf("AdjustTokenPrivileges error: %u\n", GetLastError());
         return FALSE;
     if (GetLastError() == ERROR_NOT_ALL_ASSIGNED)
         printf("The token does not have the specified privilege. \n");
         return FALSE;
     printf("Get the specified privilege! \n");
     return TRUE;
 int main(int argc, const char* argv[])
     // Declare and initialize variables.
     BOOL bResult = TRUE;
     DWORD event_id = 4624;
     std::string Source_Name = "Test security audit";
     std::wstring ws;
     std::string pbuf = "What is your purpose ?";
     std::wstring ws_buf;
     int return_code = 0;
     int i = 0;
     // Register the audit provider.
     HANDLE token;
     HANDLE hevent_source;
     ws.assign(Source_Name.begin(), Source_Name.end());
     ws_buf.assign(pbuf.begin(), pbuf.end());
     if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &token))
         return FALSE;
     SetPrivilege(token, L"SeAuditPrivilege", true);
     memset(&ar, 0, sizeof(ar));
     ar.szEventSourceName = &ws[0];
     ar.szEventMessageFile = &ws_buf[0];
     ar.szEventSourceXmlSchemaFile = NULL;
     ar.szEventAccessStringsFile = &ws_buf[0];
     ar.szExecutableImagePath = NULL;
     AuthzInstallSecurityEventSource(0, &ar);
     bResult = AuthzRegisterSecurityEventSource(0, ws.c_str(), &hEventProvider);
     int err = GetLastError();
     if (!bResult)
         printf("AuthzRegisterSecurityEventSource failed, error is %d\n", err);
         return_code = -1;
     SID id;
     if (hEventProvider)
         // Generate the audit.
         while (i < 10) {
             bResult = AuthzReportSecurityEvent(
                 APT_String, L"Jay Hamlin",
                 APT_String, L"March 21, 1960",
                 APT_Ulong, 45);
             int err1 = GetLastError();
             if (!bResult)
                 printf("AuthzReportSecurityEvent failed, error is %d\n", err1);
                 return_code = -2;
         AuthzUnregisterSecurityEventSource(0, &hEventProvider);
         AuthzUninstallSecurityEventSource(0, &ws[0]);
     std::cout << "Exit  : " << return_code << std::endl;

I'm writing this log using the code above, ım just copy from event viewer
Log Name: Security
Source: Microsoft-Windows-Security-Auditing-Mhmt
Date: 9/11/2020 12:24:57 PM
Event ID: 4624
Task Category: (3)
Level: Information
Keywords: Classic,Audit Success
User: MHMTTEST\Administrator
The description for Event ID 4624 from source Microsoft-Windows-Security-Auditing-Mhmt cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.

If the event originated on another computer, the display information had to be saved with the event.

The following information was included with the event:


Event Xml:
<Event xmlns="">;
<Provider Name="Microsoft-Windows-Security-Auditing-Mhmt" />
<EventID Qualifiers="0">4624</EventID>
<TimeCreated SystemTime="2020-09-11T19:24:57.978005800Z" />
<Security UserID="S-1-5-21-2217028777-1434293377-136569969-500" />
I want to be writing log like this format(I want to be able to log in this format by changing my code accordingly.), this log writing by system(logon windows machine in domain, generating this log)
Log Name: Security
Source: Microsoft-Windows-Security-Auditing
Date: 9/10/2020 4:40:10 PM
Event ID: 4624
Task Category: Logon
Level: Information
Keywords: Audit Success
User: N/A
An account was successfully logged on.

Security ID: NULL SID
Account Name: -
Account Domain: -
Logon ID: 0x0

Logon Type: 3

Impersonation Level: Delegation

New Logon:
Security ID: MHMTTEST\testwin
Account Name: testwin
Account Domain: MHMTTEST
Logon ID: 0x11B7DDE
Logon GUID: {5a456f07-90c3-b576-b1a0-e67abb3f2435}

Process Information:
Process ID: 0x0
Process Name: -

Network Information:
Workstation Name:
Source Network Address:
Source Port: 62499

Detailed Authentication Information:
Logon Process: Kerberos
Authentication Package: Kerberos
Transited Services: -
Package Name (NTLM only): -
Key Length: 0

This event is generated when a logon session is created. It is generated on the computer that was accessed.

The subject fields indicate the account on the local system which requested the logon. This is most commonly a service such as the Server service, or a local process such as Winlogon.exe or Services.exe.

The logon type field indicates the kind of logon that occurred. The most common types are 2 (interactive) and 3 (network).

The New Logon fields indicate the account for whom the new logon was created, i.e. the account that was logged on.

The network fields indicate where a remote logon request originated. Workstation name is not always available and may be left blank in some cases.

The impersonation level field indicates the extent to which a process in the logon session can impersonate.

The authentication information fields provide detailed information about this specific logon request.
- Logon GUID is a unique identifier that can be used to correlate this event with a KDC event.
- Transited services indicate which intermediate services have participated in this logon request.
- Package name indicates which sub-protocol was used among the NTLM protocols.
- Key length indicates the length of the generated session key. This will be 0 if no session key was requested.
Event Xml:
<Event xmlns="">;
<Provider Name="Microsoft-Windows-Security-Auditing" Guid="{54849625-5478-4994-A5BA-3E3B0328C30D}" />
<TimeCreated SystemTime="2020-09-10T23:40:10.703982200Z" />
<Correlation />
<Execution ProcessID="516" ThreadID="644" />
<Security />
<Data Name="SubjectUserSid">S-1-0-0</Data>
<Data Name="SubjectUserName">-</Data>
<Data Name="SubjectDomainName">-</Data>
<Data Name="SubjectLogonId">0x0</Data>
<Data Name="TargetUserSid">S-1-5-21-2217028777-1434293377-136569969-1607</Data>
<Data Name="TargetUserName">testwin</Data>
<Data Name="TargetDomainName">MHMTTEST</Data>
<Data Name="TargetLogonId">0x11b7dde</Data>
<Data Name="LogonType">3</Data>
<Data Name="LogonProcessName">Kerberos</Data>
<Data Name="AuthenticationPackageName">Kerberos</Data>
<Data Name="WorkstationName">
<Data Name="LogonGuid">{5A456F07-90C3-B576-B1A0-E67ABB3F2435}</Data>
<Data Name="TransmittedServices">-</Data>
<Data Name="LmPackageName">-</Data>
<Data Name="KeyLength">0</Data>
<Data Name="ProcessId">0x0</Data>
<Data Name="ProcessName">-</Data>
<Data Name="IpAddress"></Data>
<Data Name="IpPort">62499</Data>
<Data Name="ImpersonationLevel">%%1840</Data>
how can i write like system audit log using my code ?
im writing EventData field in this code part
APT_String, L"test deneme123",
APT_String, L"09.09.2020",
APT_Ulong, 45);
how can ı add "Name" attribute in here
<Data {here}>
original log data field looks like this
<Data Name="SubjectUserSid">S-1-0-0</Data>
My log EventData field looks like this, and i want to add "Name" key as in the example above
<Data>test deneme123</Data>
My goal is to convert all fields in the my custom log I created to the same format as the original audit log. Thank you for yours helping.

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@mehmetbaaran-3810, I am also able to reproduce this issue, and I am trying confirm with my college to see if this is achievable. Will keep post here if there is any update.

I am still looking into this issue, would you mind sharing the impact of this issue. And if it is urgent, a incident is recommend to resolve it as soon as possible. You can create the incident from link below and click the 'Contact us':

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FeiXue-MSFT avatar image
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FeiXue-MSFT answered

@mehmetbaaran-3810, After confirming with my collage, this behaver is by design. If you have any suggestion or feedback about this API, please submit it via Feedback Hub.

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