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[8.3] Document the behavior of IM rules and multi-value indicator documents (backport #4326) #4404

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[8.3] Document the behavior of IM rules and multi-value indicator documents (backport #4326) #4404

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Document the behavior of IM rules and multi-value indicator documents…
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2 changes: 1 addition & 1 deletion docs/cases/cases-ui-integrations.asciidoc
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Expand Up @@ -221,4 +221,4 @@ To learn how to connect {elastic-sec} to {jira}, check out the following tutoria
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16 changes: 13 additions & 3 deletions docs/detections/rules-ui-create.asciidoc
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Expand Up @@ -220,6 +220,12 @@ NOTE: {es-sec} provides limited support for indicator match rules. See <<support

. To create an indicator match rule that searches for events whose specified field value matches the specified indicator field value in the indicator index patterns, select *Indicator Match*, then fill in the following fields:
.. *Index patterns*: The {es-sec} event indices on which the rule runs.
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. Go to *Rules* -> *Detection rules (SIEM)* -> *Create new rule*. The *Create new rule* page displays.
. To create a rule that searches for events whose specified field value matches the specified indicator field value in the indicator index patterns, select *Indicator Match*, then fill in the following fields:

.. *Source*: The individual index patterns or data view that specifies what data to search.
>>>>>>> ed4d816 (Document the behavior of IM rules and multi-value indicator documents (#4326))
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.. *Custom query*: The query and filters used to retrieve the required results from
the {es-sec} event indices. For example, if you want to match documents that only contain a `destination.ip` address field, add `destination.ip : *`.
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Expand All @@ -231,10 +237,14 @@ IMPORTANT: Data in indicator indices must be <<ecs-compliant-reqs, ECS compatibl
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.. *Indicator index query*: The query and filters used to filter the fields from
the indicator index patterns. The default query `@timestamp > "now-30d/d"` searches specified indicator indices for indicators ingested during the past 30 days and rounds the start time down to the nearest day (resolves to UTC `00:00:00`).
.. *Indicator mapping*: Compares the values of the specified event and indicator field
values. When the field values are identical, an alert is generated. To define
.. *Indicator mapping*: Compares the values of the specified event and indicator fields, and generates an alert if the values are identical.
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NOTE: Only single-value fields are supported.
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To define
which field values are compared from the indices add the following:
** *Field*: The field used for comparing values in the {es-sec} event

** *Field*: The field used for comparing values in the {elastic-sec} event
indices.
** *Indicator index field*: The field used for comparing values in the indicator
indices.
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