Monitor correlation rules - Administrator Guide - Cortex XDR - Cortex

Monitor correlation rules - Administrator Guide - Cortex XDR - Cortex - Security Operations

Cortex XDR Pro Administrator Guide

Product

Cortex XDR

License

Pro

Creation date

2024-07-16

Last date published

2024-10-14

Note

In the dataset, the Query start time and Query end time indicate the timeframe of the data that was queried. The actual start and end times of the correlation rule execution are recorded in the _time field for the Initiated and Completed entries.

Set up a correlation rule to monitor correlation errors

The following correlation rule triggers alerts when correlations fail to run:

Field	Value to specify
Rule Name	Correlation errors
XQL	dataset = correlations_auditing \| filter status = "Error"
Time Schedule	Hourly
Query time frame	1 Hour
Action	Generate alert
Alert Name	Correlation error
Severity	Medium
Category	User Defined

After setting up the correlation rule, you can set up a new forwarding configuration to send an email or Slack message when Correlation error alerts are triggered. For more information, see Configure Notification Forwarding.Configure Notification Forwarding

Field descriptions for the correlations_auditing dataset

The following table describes the fields in the correlations_auditing dataset:

Field	Description
_time	Timestamp of the audit. For entries with an Initiated or Initiated Manually status, this is the start time of the correlation rule execution. For entries with a Completed or Error status, this is the end time of the rule execution.
_id	Unique identifier of the audit entry.
Rule ID	Unique identification number for the correlation rule.
Name	Correlation rule name.
Status	The status of the correlation rule query. Possible values are Initiated, Initiated Manually, Completed, and Error.
Query start time	The start time of the query timeframe.
Query end time	The end time of the query timeframe.
Time frame	Time frame for the query.
Failure reason	For correlation rules with errors, this field displays the error message.
Retry attempts	Number of retry attempts before the query initiated or failed to run.
Schedule	Scheduled frequency to execute the correlation rule.
Rule creation time	Date and time that the correlation rule was created.
Rule modification time	Date and time that the correlation rule was last modified.
Description	Description of the correlation rule.
Severity	Defined severity of the correlation rule.
Dataset	Target data set, as defined in the correlation rule
Suppression status	Whether alert suppression is Enabled or Disabled.
Suppression duration	Duration for which to ignore additional events that match the alert suppression criteria.
Suppression fields	Fields on which the alert suppression is based.
Timezone	Timezone on which the scheduled frequency is based.
MITRE ATT&CK Tactic	MITRE ATT&CK tactic that the correlation rule attempted to trigger.
MITRE ATT&CK Technique	MITRE ATT&CK technique that the correlation rule attempted to trigger.
Alert category	Category of alert as configured when creating the rule.
Source	Source of the correlation rule.
XQL search	XQL query for the correlation rule.
Drill-down query	XQL query configured for further investigation.
Alert name	Name of the alert that the correlation rule will trigger.