YARA Rules

Deep Discovery Email Inspector uses YARA rules to identify malware. YARA rules are malware detection patterns that are fully customizable to identify targeted attacks and security threats specific to your environment.

Deep Discovery Email Inspector supports a maximum of 5,000 enabled YARA rules regardless of the number of YARA rule files. On the top-right corner of the YARA rule table, the Rules in use field indicates the number of YARA rules currently enabled in the system.


After you register Deep Discovery Email Inspector to Deep Discovery Director, Deep Discovery Email Inspector automatically synchronizes YARA rule settings from Deep Discovery Director and overwrites existing YARA rule settings that you have configured.

The following table shows information about YARA rule files.

Table 1. YARA Rules



File name

Name of the YARA rule file.

Risk level

Risk level of the YARA rules.


Number of YARA rules contained in the YARA rule file.

Files to analyze

File types to analyze using the YARA rules in the YARA rule file.

Last Updated

Date and time the YARA rule file was last updated.


Toggle to enable or disable the YARA rule file.