The Splunk Add-on for Recorded Future is designed specifically for Splunk Enterprise Security.
This Add-on integrates with the Splunk ES Threat Intelligence Framework by adding a feed containing information security threat indicators from Recorded Future. With this added feature, defenders can automate the process of finding connections between internal incidents and external sources. This can work bidirectionally: searching Recorded Future for more context around internally observed indicators, or testing trending indicators from open source reporting against internal data sets.
The Add-on also simplifies the workflow of analysts working within the ES environment by adding contextual actions to the Incident Review and event searching and reporting views. This includes information on IPs, domains, file hashes and CVEs.
For more information on Recorded Future, visit www.recordedfuture.com.
To install this Add-on, perform the following steps:
Click the button 'Add new entry' in the "Incident Review -
Event Attributes" section. Add the following Label and Field
Label Field --------------------- ---------------------- RF Risk Score rf_a_risk_score RF Risk Score Threshold rf_risk_score_threshold RF Triggered Rules rf_b_risk_string RF Evidence Details rf_evidence_details_0 RF Evidence Details 2 rf_evidence_details_1 RF Evidence Details 3 rf_evidence_details_2 RF Evidence Details 4 rf_evidence_details_3 RF Evidence Details 5 rf_evidence_details_4 RF Evidence Details (remaining) rf_evidence_details_rest
A restart of the Splunk instance will be required once the
installation has completed.
Alternatively, you can download the Add-on using the Splunk Web interface's "Find more apps online" feature. Steps 5 and onwards above must still be completed.
Upgrade from 2.x versions
The lookup file's name has changed, the old file should be removed. Please delete:
After installation, you will need to set up the Add-on for Recorded Future to communicate with the Recorded Future API. The setup page will request your API token, and the Add-on will not import threat information without this. This is described in step 4 of the installation procedure above.
The script which retrieves the lists of IP number etc will select a Risk Score Threshold which will produce a set number of entries in the list. By default this number is 25.000. This number can be
changed by editing the file recorded_future.conf in the local directory in the app directory. Ex:
max_entries = 25000
Be aware of that increasing this number will significantly increase the load on the server.
It is possible to increase the amount of logging that the app does to TA-recorded_future.log by adding the following lines to the recorded_future.conf file in the app's local directory:
log_level = debug
The app uses a script to retrieve threat information from Recorded Future. This script is run (default every 60 minutes) from a stanza in inputs.conf. This threat information contains IP numbers, Domain names and Hashes which are considered suspicious or malicious by Recorded Future. Each entity has a Risk Score and evidence of why that is assigned to it. The data contains all entities with a Risk Score of 25 or more (100 being the maximum).
During the execution one https call is made to https://api.recordedfuture.com/ to retrieve the information which is then processed and stored on the Splunk server for each type of data.
If proxy is a must, you can solve by adding a the following lines to $SPLUNK_HOME/etc/splunk-launch.conf:
http_proxy=your proxy https_proxy=your proxy
If using a large risk lists (see the Setup section above) it may be advisable to avoid transferring it across cluster nodes. This will however force the lookups to be performed locally on the search head, putting additional strain on that node.
If you want it to perform the search locally, then you can:
- add the parameter local=true to the custom search,
- you can blacklist the lookup file from the indexers:
If the Knowledge bundle is too large it may be necessary to lower the max_entries values in recorded_future.conf.
For more information and to set up your trial or paid subscription, please contact firstname.lastname@example.org (US east coast business hours).
This version utilizes CIM to improve performance.
Reduces the size of the Recorded Future IP Risk List file used to generate the notable events to improve resource utilization. The size of the list is now configurable after install. This reduces the size of the file and allows it to be downloaded to Indexers for matching against IPs.
Updated Interval of IP Risk List download. This version downloads the full Recorded Future IP Risk List and performs the correlation on the Search Head.
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