How-To: Export your Cloud PKI Logs to Huntress

Prerequisites

• The Keytos Entra ID application is registered in your tenant
• You have an active EZCA plan

How To Export Your Cloud PKI Audit Logs To Huntress

How To Enable Log Export in EZCA Portal

1. Go to the EZCA Portal.

2. Click on Settings.

   

3. Expand your subscription’s Advanced Settings.

   

4. Enable the Send Audit Logs to SIEM option.

   

How To Configure the Huntress Exporter in the Huntress Portal

1. In another tab, go to your Huntress instance.

2. Click on the SIEM menu. Then, click Source Management.

   

3. Click Add Source. Then, click Generic HEC (HTTP Event Collector).

   

4. Click + Add to add a new HEC.

   

5. Add an Organization, Name, and optional Description. Then, click Save.

   

6. After the HEC is created, copy the HTTP Event Collector URL and the HTTP Event Collector Token.

   

How To Configure the Huntress SIEM in EZCA Portal

1. Now go back to the EZCA Portal.

2. Select Huntress as the SIEM Provider.

   

3. Input the values that you copied from the Huntress portal. Then, click Test Connection. This will create a test log in your Huntress SIEM (please allow a few minutes for the log to show up in the Huntress portal).

   

4. If the connection test is successful, click Save changes

   

5. EZCA will now send your security alerts to your SIEM. If an error occurs it will email your subscription administrators. See below to see the different events EZCA will send.

How To Create Alerts in Huntress to Monitor Your Cloud PKI Activity

We recommend setting up alerts for any high criticality event, and closely monitor medium and low events. Here are some example queries to get you started:

Certificate Request Denied (Event ID 4888)

Certificate request denied is an event that is created when a user requests a certificate that they do not have permission to request. It is important to alert on this event since it can be an attacker attempting to escalate privileges by requesting a certificate.

from logs | where generic_hec.EventID == 4888

CA Permission Changed (Event ID 4882)

CA Permission Changed is an event that is created when a user changes the security permissions for a CA. This event should be monitored since it is a low frequency high impact action that could indicate a compromise to your PKI administrator’s accounts.

from logs | where generic_hec.EventID == 4882

CA Changes Denied (Event ID 92)

CA Permission Denied is an event that is created when a user attempts to change the security permissions for a CA without having the proper security permissions. It is important to alert on this event since it can be an attacker attempting to escalate privileges by changing the security configuration of your certificate authority.

from logs | where generic_hec.EventID == 92

Deleted CA (Event ID 19)

CA Deleted is an event that is created when a user deletes a CA. This event should be monitored since it is a low frequency high impact action that could indicate a compromise to your PKI administrator’s accounts.

from logs | where generic_hec.EventID == 19

What Logs are Sent to Huntress?

EZCA sends the following log types to your SIEM:

CA Operation Events

Certificate Operation Events