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Sheriff CSM™

Microsoft Sysmon through NXLog

When you configure Microsoft System Monitor (Sysmon) to send log data to Sheriff CSM, you can use the Microsoft Sysmon plugin to translate raw log data into normalized events for analysis. The table below provides some basic information for the plugin:

Plugin Information

Device	Details
Vendor	Microsoft
Device Type	Infrastructure Monitoring
Connection Type	Syslog
Data Source Name	sysmon-nxlog
Data Source ID	1904

Integrating Microsoft Sysmon and NXLog

You must have installed and configured Sysmon on the Windows systems. Use a configuration file to filter events you want to capture. Check the Microsoft website for downloads and instructions.

Before you configure Sysmon to send logs to Sheriff CSM through NXLog, you must have the IP Address of the Sheriff CSM Sensor (Deputy).

Configure NXLog on Windows

To send log data through NXLog to Sheriff CSM

1. If not done already, download nxlog.conf, and then place it in the conf directory of your NXLog installation. Depending on which version you use, the directory can be C:\Program Files (x86)\nxlog\conf for the 32-bit version or C:\Program Files\nxlog\conf for the 64-bit version.

   Note: This step overwrites the default nxlog.conf file. You may want to back up the original copy before placing the one provided by AT&T Cybersecurity.

2. Open the nxlog.conf file in a text editor.

3. Update the root path of your NXLog installation.

   1. Locate the following lines:

      #define ROOT C:\Program Files\nxlog
      #define ROOT C:\Program Files (x86)\nxlog

   2. Uncomment the path that matches the NXLog installation on your Windows machine.

4. Enter the Sheriff CSM Sensor IP address.

   1. Locate the following line:

      define OUTPUT_DESTINATION_ADDRESS <Sheriff-CSM-Sensor-IP>

   2. Replace <Sheriff-CSM-Sensor-IP> with the IP address of the Sheriff CSM All-in-One or Sheriff CSM Sensor that will receive the Windows events.

5. Uncomment the section between SYSMON-NXLOG and /SYSMON-NXLOG.

   Important: Only remove the first # symbol in each line when uncommenting the sections. The remaining # symbol indicates that the line is either a comment or optional.

6. In addition, uncomment the following lines in the NXLOG section:

   #<Extension transform_Sheriff_csv>
   # Module xm_csv
   # Fields $EventTime, $EventType, $Severity, $Channel, $Hostname, $EventID,
   $SourceName, $AccountName, $AccountType, $Domain, $Message
   # FieldTypes string, string, string, string, string, string, string, string, string,
   string, string
   # Delimiter ;
   #</Extension>

7. Save the file.

8. Start or restart the NXLog service.

Plugin Enablement

For plugin enablement information, see Enable Plugins.

If enabling the plugin on assets, you will find it listed as Microsoft : Sysmon : -.

Additional Resources and Troubleshooting

NXLog documentation on forwarding and storing logs

For troubleshooting, refer to the vendor documentation:

NXLog documentation on troubleshooting