What is custom rule engine in QRadar?

The Custom Rules Engine (CRE) displays the rules and building blocks that are used by IBM® QRadar®. For more information about rules and offenses, see the IBM QRadar User Guide . Rules. A rule is a collection of tests that triggers an action when specific conditions are met.

Similarly, it is asked, what is a QRadar offense?

Offense investigations. IBM® QRadar® uses rules to monitor the events and flows in your network to detect security threats. When the events and flows meet the test criteria that is defined in the rules, an offense is created to show that a security attack or policy breach is suspected.

Beside above, what categories of rules exist in QRadar? Custom Rules: Perform tests on events, flows, and offenses to detect unusual network activity. Anomaly: Perform tests on the results of saved flow or event searches as a means to detect when unusual traffic patterns occur.

Beside this, what can a custom common rule test?

For example, you can create a common rule to detect events and flows that have a specific source IP address. It is common for common rules to create offenses as a response. Test the parameters of an offense to trigger more responses.

What is correlation in QRadar?

If you bulk load data into your QRadar deployment, you can use historical correlation to correlate the data against data that was collected in real-time. For example, to avoid performance degradation during normal business hours, you load events from multiple log sources every night at midnight.

What database does QRadar use?

SQLite database

What is reference set in QRadar?

Reference sets overview. Use reference sets in IBM® QRadar® to store data in a simple list format. A reference set contains unique values that you can use in searches, filters, rule test conditions, and rule responses.

How do you investigate Offences in QRadar?

The Offense Summary window provides the information that you need to investigate an offense in IBM® QRadar®.

Procedure

1. Click the Offenses tab and double-click the offense that you want to investigate.
2. Review the first row of data to learn about the level of importance that QRadar assigned to the offense.

What are building blocks in QRadar?

Building blocks group commonly used tests, to build complex logic, so that they can be used in rules. Building blocks use the same tests that rules use, but have no actions that are associated with them, and are often configured to test groups of IP addresses, privileged user names, or collections of event names.

What is the main difference between building blocks and rules?

C . Building Blocks are built-in to the product; Rules are customized for each deployment. D . Building Blocks are Rules which are evaluated on both Flows and Events; Rules are evaluated on Offenses of Flows or Events.

What is the purpose of the network hierarchy in QRadar?

IBM® QRadar® uses the network hierarchy objects and groups to view network activity and monitor groups or services in your network. QRadar supports any network hierarchy that can be defined by a range of IP addresses. You can base your network on many different variables, including geographical or business units.

What is the default time interval of the QRadar flow record?

If not defined, will run with default 600 seconds interval (10 minutes).

Which engine is responsible for processing events or flows and compare them against defined rules to search for anomalies?

The custom rules engine (CRE) processes events and compares them against defined rules to search for anomalies. When a rule condition is met, the Event Processor generates an action that is defined in the rule response.