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MISP42Splunk

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Admins: Please read about Splunk Enterprise 8.0 and the Python 2.7 end-of-life changes and impact on apps and upgradeshere.
Overview
Details
misp42splunk app connects MISP and Splunk.

The app is designed to be easy to install, set up and maintain using the Splunk GUI without directly editing files.
MISP instances must be version 2.4.97 or above (new REST API).

IMPORTANT

With version 3.0.0 you need FIRST to create input(s) to point to your MISP instance(s)
and SECOND adapt all saved searches to add misp_instance=one-of-the-input-name

You can use as many MISP instances as you like. Simply create inputs in the configuration panel.

The main use cases are:
1. MISP to SPLUNK:
| mispgetioc misp_instance=default_misp params | ... gets MISP event attributes into Splunk search pipeline.
| mispapireport misp_instance=default_misp params | ... gets MISP event attributes into Splunk search pipeline.
search ... |mispsearch misp_instance=default_misp field=myvalue | ... searches for matching attributes in MISP.
search ... |mispsight misp_instance=default_misp field=myvalue | ... gets sighting information for a specific value (note that if there is FP, only first hit is returned)

2. MISP for SPLUNK: 2 Splunk alert actions are available
one action to create or edit events..
one action to increment attribute sighting in a MISP instance.

see more on https://github.com/remg427/misp42splunk

Overview

misp42splunk app connects MISP and Splunk.
The app is designed to be easy to install, set up and maintain using the Splunk GUI.
MISP instances must be version 2.4.98 or above (new REST API).

misp42splunk version >=3.0.0: this is a major update;
after installation, restart splunk, launch the app and create one misp instance under inputs. It is recommended to name it default_misp. If you need several instances, create additional inputs.

Usage

  1. MISP to SPLUNK:
    | mispgetioc misp_instance=default_misp _params_ | ... gets MISP event attributes into Splunk search pipeline.
    | mispapireport misp_instance=default_misp _params_ | ... gets MISP event attributes into Splunk search pipeline.
    search ... |mispsearch misp_instance=default_misp field=myvalue | ... searches for matching attributes in MISP.
    search ... |mispsight misp_instance=default_misp field=myvalue | ... gets sighting information for a specific value (note that if there is FP, only first hit is returned)

  2. MISP for SPLUNK: 2 Splunk alert actions are available

  3. one action to create new events or edit existing ones if you provide an eventid (or UUID). This allows to contribute to misp event(s) across several alert triggers.
  4. one action to increment attribute sighting in a MISP instance.

Installation

This app is designed to run on Splunk Search Head(s) on Linux plateforms (not tested on Windows but it could work)
1. working with master Download this file which is the Splunk app
2. working with other branches Download the ZIP file and extract the folder misp42splunk which actually contains the Splunk app. You have to compress that folder as misp42splunk.tar.gz
3. Install the app on your Splunk Search Head(s): "Manage Apps" -> "Install app from file"
4. At next logon, you should be invited to configure the app (if not go to Manage Apps > misp42 > launch app)
5. create at least one input for example "default_misp"
- provide the url to your MISP instance,
- provide the authkey,
- check (or not) the certificate of the MISP server,
- use (or not) the proxy for this instance,
- provide client certificate if required (and check the box to use it)

Use Cases

Hunting in Splunk logs

Fresh IOC from MISP > saved searches in Splunk

Creating (or editing) events based on automated sandboxing

If you have output of analysis pushed to Splunk you may automate the creation of events
Log on sandboxing output > saved search to qualify, sanitize (dedup remove top Alexa, etc.) and prepare the table (misp_, fo_, eo_ and no_) > set a splunk alert to create event(s) in MISP
Only fields prefixed with misp_ (or fo_ for file objects, eo_ for email objects, no_ for network objects) are imported
Advise: for objects, verify the name of the fields to be created Object definitions
* If you provide an eventid, that event is updated with attributes and objects instead of creating a new one. WARNING apparently the API does create duplicate objects if you submit sevral time the same inputs.

Sighting in MISP based on Splunk alerts

Search for attributes values/uuids in Splunk > alert to increment sighting counters (standard,false positive,expiration) in MISP for those values/uuids

Usage

  • custom commands
  • Splunk alert actions to update MISP
    • Alert to create MISP event(s)
    • Alert for attribute sighting in MISP

Saved searches and Enterprise Security App

Several saved searches are provided to easily create KV store lookups which can be used later. THe default behaviour is to append new event attributes to the KV store but you may switch to replace it.
Based on those searches, you can easily created local CSV files and feed intel to Enterprise Security App.

todo

  • [ ] savedsearches to pull intel for domain ip and email address (for Enterprise Security)
  • [ ] dashboard to see IOC available/pulled from MISP

Credits

The creation of this app started from work done by https://github.com/xme/splunk/tree/master/getmispioc and the associated blog https://blog.rootshell.be/2017/10/31/splunk-custom-search-command-searching-misp-iocs/ for MISP interactions.

Licence

This app misp42splunk is licensed under the GNU Lesser General Public License v3.0.

Release Notes

Version 3.1.2
Nov. 7, 2019

Version 3.1.2
Nov. 6, 2019

- fix error related to default logging level (#123)

Version 3.1.1
Nov. 5, 2019

- fix error related to param threat_level in new command mispgetevent (removed param) (#122)

Version 3.1.0

- new custom command mispgetvent leveraging /events/restSearch
- modifiy mispgetioc
- to support param json_request
- replace date_from and date_to by date
- remove custom command mispapireport (use misgetioc with json_request)
- update splunk-sdk to 1.6.11
- fixed use of logging level in custom commands

Version 3.0.9
Sept. 19, 2019

- fix mispsearch issue limited to first event
- implement support for ca_full_path option

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