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
.conf21 CFS Extended through 5/20!

Don't miss your chance
to share your Splunk
wisdom in-person or
virtually at .conf21!

Call for Speakers has
been extended through
Thursday, 5/20!