Splunk Enterprise Security

Does an IOC get removed from ip_intel if you remove it from the local lookup

cybersecrav
New Member

Hi all,

So I followed the guide here https://docs.splunk.com/Documentation/ES/4.5.1/User/Configureblocklists in order to upload a custom csv file with some IOCs in it, and created a new intelligence download referring to the lookup, with 'lookup://lookup_name'.

My assumption was that this lookup is dynamic so when you remove an IOC from the original lookup, this gets reflected in the ip_intel and other collections as well once the threat searches are run. I tried this and the IOC still exists in the collection and threat searches still run against it. When I add an IOC to the lookup, this gets added to ip_intel as well so that's working as expected.

Am I wrong in thinking that IOCs get removed from ip_intel and other collections when you remove an IOC from the original lookup? Is the only way to remove an IOC to re-write the ip_intel without the said IOC using 'outputlookup'?

Thanks for all your help!

0 Karma
Get Updates on the Splunk Community!

Holistic Visibility and Effective Alerting Across IT and OT Assets

Instead of effective and unified solutions, they’re left with tool fatigue, disjointed alerts and siloed ...

SOC Modernization: How Automation and Splunk SOAR are Shaping the Next-Gen Security ...

Security automation is no longer a luxury but a necessity. Join us to learn how Splunk ES and SOAR empower ...

Ask It, Fix It: Faster Investigations with AI Assistant in Observability Cloud

  Join us in this Tech Talk and learn about the recently launched AI Assistant in Observability Cloud. With ...