Create a Registry Query

Create a query to investigate connections between registry activity, processes, and endpoints.
From the Query Builder you can investigate connections between registry activity, processes, and endpoints.
query-search-registry.png
Some examples of registry queries you can run include:
  • Modified registry keys on specific endpoints.
  • Registry keys related to process activity that exist on specific endpoints.
To build a registry query:
  1. From Cortex XDR, select
    INVESTIGATION
    Query Builder
    .
  2. Select
    REGISTRY
    .
  3. Enter the search criteria for the registry events query.
    • Registry action—Select the type or types of registry actions you want to search:
      Key Create
      ,
      Key Delete
      ,
      Key Rename
      ,
      Value Set
      , or
      Value Delete
      .
    • Registry attributes—Define any additional registry attributes for which you want to search. By default, Cortex XDR will return the events that match the attribute you specify. To exclude an attribute value, toggle the
      =
      option to
      =!
      . Attributes are:
      • KEY NAME
        —Registry key name.
      • DATA
        —Registry key data value.
      • REGISTRY FULL KEY
        —Full registry key path.
      • KEY PREVIOUS NAME
        —Name of the registry key before modification.
      • VALUE NAME
        —Registry value name.
      To specify an additional exception (match this value except), click the
      +
      to the right of the value and specify the exception value.
  4. (
    Optional
    ) Limit the scope to a specific acting process:
    Select query-acting-process-scope.png and specify one or more of the following attributes for the acting (parent) process.
    Use a pipe (
    |
    ) to separate multiple values. Use an asterisk (
    *
    ) to match any string of characters.
    • NAME
      —Name of the parent process.
    • PATH
      —Path to the parent process.
    • CMD
      —Command-line used to initiate the parent process including any arguments, up to 128 characters.
    • MD5
      —MD5 hash value of the parent process.
    • SHA256
      —SHA256 hash value of the process.
    • USER NAME
      —User who executed the process.
    • SIGNATURE
      —Signing status of the parent process: Signed, Unsigned, N/A, Invalid Signature, Weak Hash
    • SIGNER
      —Entity that signed the certificate of the parent process.
    • PID
      —Process ID of the parent process.
    • Run search on process, Causality and OS actors
      —The causality actor—also referred to as the causality group owner (CGO)—is the parent process in the execution chain that the Cortex XDR agent identified as being responsible for initiating the process tree. The OS actor is the parent process that creates an OS process on behalf of a different initiator. By default, this option is enabled to apply the same search criteria to initiating processes. To configure different attributes for the parent or initiating process, clear this option.
  5. (
    Optional
    ) Limit the scope to an endpoint or endpoint attributes:
    Select query-host-scope.png and specify one or more of the following attributes:
    • HOST
      HOST NAME
      ,
      HOST IP
      address,
      HOST OS
      ,
      HOST MAC ADDRESS
      , or
      INSTALLATION TYPE
      .
      INSTALLATION TYPE
      can be either Cortex XDR agent or Data Collector.
    • PROCESS
      NAME
      ,
      PATH
      ,
      CMD
      ,
      MD5
      ,
      SHA256
      ,
      USER NAME
      ,
      SIGNATURE
      , or
      PID
    Use a pipe (
    |
    ) to separate multiple values. Use an asterisk (
    *
    ) to match any string of characters.
  6. Specify the time period for which you want to search for events.
    Options are:
    Last 24H
    (hours),
    Last 7D
    (days),
    Last 1M
    (month), or select a
    Custom
    time period.
  7. Choose when to run the query.
    query-save-options.png
    Select the calendar icon to schedule a query to run on or before a specific date,
    Run in background
    to run the query as resources are available, or
    Run
    to run the query immediately and view the results in the
    Query Center
    .
  8. When you are ready, View the Results of a Query.

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