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Threat Activity Drilldown for ES

Splunk Cloud
This app has been archived. Learn more about app archiving.
This app is NOT supported by Splunk. Please read about what that means for you here.
*** Deprecated as of Splunk ES 4.7, as this functionality was built into ES 4.7 ***
*** Please do not use with ES 4.7 or newer version! ***

This search add-on contains adds workflow actions to the ES Notable Event and the ES Threat Activity events so that an analyst looking at either can drill down from a threat activity indicator to look at the underlying raw events.

What it does

Adds workflow actions so that an analyst either looking at the incident review dashboard, manually searching index=notable, or manually searching index=threat_activity can use the event actions to find the underlying threat events. (See screenshots)

How it works

These events contain all the components you need to get to the raw events, including:
- Timeframe (info_min_time and info_max_time)
- Sourcetype (e.g., websense, bluecoat, or what have you)
- Triggering fields (e.g., dest, file_name, etc.)
- Scoping fields (e.g., src, host, etc.)
There are then embedded in tokens in the search so that you will get any of the raw events.

If you're a detail-oriented Splunker, you might notice that there are a few field extractions -- in the event of searching from index=notable or the incident review dashboard, we are looking at a twice-summaried event. The first is from raw event to index=threat_activity, and the second is from index=threat_activity to index=notable. These extractions allow us to make sure that we are gathering the correct field extractions to pull out our data.

What IOC Types are Supported

Currently, just src/dest based hits and filename based hits are supported. Adding any extras are really easy, I just don't have examples to make sure they work. Send me an example index=notable and/or index=threat_activity (preferably both) and I'll be happy to add support. Or add it yourself (it's not hard) by modifying the search and then send me the working version so that I can integrate it.

How to Install

Easy -- just install the app on your search head -- no other work required.

What versions of ES are supported?

It has been tested on 4.0.x, but it should also work on 6.3.x

Where Was This Tested?

Only in a 6.3 demo system, at present. That said, if it fails it should fail in a way that is totally non-impactful.

Release Notes

Version 1.1
April 14, 2016

Fixed a few bugs with drilling down from notable events (prior work was from the threat activity events).

Version 1.0
Feb. 25, 2016

Initial Release

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