Splunk Search

How can I combine the list of events within recent timeframe with the count of similar event in a broader timeframe (not taking into account the last 5 days)?

tomgc
Engager

Hello everyone,

I am trying to combine the following:
- The query 1 looks for recent events (earliest=-10m@m latest=-5m@m) and check field_a1 against a lookup csv file and return the field_a2 associated to it and filter it based on field_a2 value (filtering_criteria).
- The query 2 look on the same index, and I try to count how many times a similar event has happened in the past without taking into account the last 5 days (earliest=-30d@d latest=-5d@d).
- What I want as result, is the events of the query 1 augmented with the count of the query 2.

I perform the searches in the order query 1 than query 2 for performance reasons (query 1 returns usually less than 10 events whereas query 2 returns 2,5 million results if not filtered).

To give a bit more context, I want to monitor recent traffic from or to specific addresses (addresses being contained in a lookup file with a reason for being in this lookup file) and count the number of similar traffic event in a larger past period without taking into the last 5 days.
I intend to use this "combined search" in scheduled alert that will run every 5 minutes and send email if there are results.

Starting point:

The index “index_a” has the following “columns”:
- field_a1, field_a2, ,field_a3, field_a4, field_a5

The inputlookup contains pair of values “values of field_a1” / “values of field_f1”

The query 1:
index=index_a earliest=-10m@m latest=-5m@m | inputlookup reference.csv field_a1 as field_a1 OUTPUT field_f1 as field_f1 | where field_f1="filtering_criteria" | stats list(field_a2) list(field_a3) list(field_a4) list(field_a5) by field_a1

- Generate a list of grouped events by field_a1

The query 2:
index=index_a earliest=-30d@d latest=-5d@d |inputlookup reference.csv field_a1 as field_a1 OUTPUT field_f1 as field_f1|stats count as NumberOfEvents by field_a1

- Generate a count by field_a1

Expected result:
- table field_a1, field_a2, field_a3,
field_a4, field_a5, NumberOfEvents

Thanks you already for your help,

Tom

Tags (1)
0 Karma
Get Updates on the Splunk Community!

Stay Connected: Your Guide to May Tech Talks, Office Hours, and Webinars!

Take a look below to explore our upcoming Community Office Hours, Tech Talks, and Webinars this month. This ...

They're back! Join the SplunkTrust and MVP at .conf24

With our highly anticipated annual conference, .conf, comes the fez-wearers you can trust! The SplunkTrust, as ...

Enterprise Security Content Update (ESCU) | New Releases

Last month, the Splunk Threat Research Team had two releases of new security content via the Enterprise ...