Splunk Search

Find results that are not in a transaction

xtinas
Engager

The data is MFA attempts in O365. I have an alert that fires whenever someone denies an MFA push. The thing is, sometimes someone has just accidentally tapped "deny", and they use MFA successfully in the next minute or two.

Sample data:

_timemsgevent_name
2021-04-28 16:13:49SingleEVENT_CATEGORY_SSO_LOGIN
2021-04-28 16:13:46Multi-factorEVENT_CATEGORY_FACTOR_AUTH_SUCCESS
2021-04-28 16:13:43send_factor_verify_pushEVENT_CATEGORY_UNSPECIFIED
2021-04-28 16:13:38user.mfa.okta_verify.deny_pushEVENT_CATEGORY_UNSPECIFIED
2021-04-28 16:13:28send_factor_verify_pushEVENT_CATEGORY_UNSPECIFIED
2021-04-28 16:13:26LogEVENT_CATEGORY_LOGIN
2021-04-28 16:13:26policy.evaluate_sign_onEVENT_CATEGORY_UNSPECIFIED
2021-04-28 16:13:26message_sent.new_device_notificationEVENT_CATEGORY_UNSPECIFIED


What I want is to filter on messages that contain "deny_push", but that are not followed up with a successful authentication within 5 minutes after the deny_push event.

How on earth do I do that?

Labels (2)
0 Karma
Get Updates on the Splunk Community!

Enterprise Security Content Update (ESCU) | New Releases

In December, the Splunk Threat Research Team had 1 release of new security content via the Enterprise Security ...

Why am I not seeing the finding in Splunk Enterprise Security Analyst Queue?

(This is the first of a series of 2 blogs). Splunk Enterprise Security is a fantastic tool that offers robust ...

Index This | What are the 12 Days of Splunk-mas?

December 2024 Edition Hayyy Splunk Education Enthusiasts and the Eternally Curious!  We’re back with another ...