Getting Data In

capturing windows failed login

npandith
Explorer

I have been trying with the below query to capture the failed login attempts made on the windows servers.

source="WinEventLog:Security" EventCode="4625" OR EventCode="539" OR EventCode="529" OR EventCode="531" eval User_Name=coalesce(User_Name,Account_Name) | stats count,list(User_Name)by host

But the above query will give output as below-


host count list(User_Name)


dc1server01 1 john john

It says count as 1 but in the list it gives username twice(john). I used dedup but i still i am not able to fix the issue.

Can anyone please let me know the solution for this?

0 Karma

I-Man
Communicator

Hey,

Can you post what your actual logs look like? I wrote the same report but used mvindex instead of coalesce as i was having an issue where the Account name field was listed more than once and i had to specify which one i needed.

It looks like you are trying to combine two fields into one using coalesce. Try using case instead, example:

eval UserName=case(k8cname!="", k8cname, User_Name!="", User_Name)

This takes field k8cname and User_Name and combines them into one field UserName. A little roundabout but works.

I-Man

0 Karma
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Supercharging Windows Security Detection Performance: Introducing Hybrid Field ...

Windows event logs—from Security auditing and Sysmon to PowerShell script blocks—form the operational backbone ...

Ditch the Manual Grind: Building AI Agents with Splunk

Ditch the Manual Grind: Building AI Agents with Splunk Let’s be real: your team’s time is being eaten alive. ...

Cisco Data Fabric from Architecture to Investigation, Better SOC Visibility, and More ...

Splunk Lantern is Splunk’s customer success center that provides practical guidance from Splunk experts on key ...