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Enabling custom YARA rules using the CLI

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This procedure describes how to configure YARA rules-based analysis using the CLI. This feature can be configured using CLI commands only.

Prerequisites
  • Operator or Admin access

To enable or disable the use of custom YARA rules:
  1. Go to CLI configuration mode.

    vx-hostname > enable
    vx-hostname # configure terminal
  2. Enable the compute node to use custom YARA rules in addition to Trellix-provided YARA rules:

    vx-hostname (config) # yara policy both
  3. Verify your changes. In the following example, the Intelligent Virtual Execution - Server appliance is configured to use both Trellix-provided and custom YARA rules:

    vx-hostname (config) # show static-analysis config
      
      Static Analysis enabled                : yes
        AV-suite enabled                     : yes
        AV-suite version                     : 6
        SA on AV-suite whitelist enabled     : no
        AV-check enabled                     : yes
        Dropper enabled                      : yes
        YARA enabled                         : yes
    
      Embedded object extraction enabled     : no
      Embedded URL extraction enabled        : yes
      Max URLs from files to be analyzed     : 5
      Static info policy                     : Disable
    
    Yara Configuration
      Yara policy                         : both
       Yara customer match limit             : 3
    ........
  4. Save your changes.

    vx-hostname (config) # write memory