Splunk Search

How to exclude the Windows events with Splunk process before indexing?

kiran331
Builder

Hi,

I see a lot of events in Windows logs with Process splunk-regmon, powershell etc. Is there a way to exclude the processes before indexing?

message contains:

C:\Program Files\SplunkUniversalForwarder\bin\*
0 Karma
1 Solution

gcusello
SplunkTrust
SplunkTrust

Hi
following http://docs.splunk.com/Documentation/Splunk/6.6.2/Forwarding/Routeandfilterdatad put in your indexers something like this:

in props.conf

[WinEventLog:Security]
 TRANSFORMS-set-exclude=set_exclude,set_nullqueue

in transforms.conf

[set_exclude]
 REGEX=.
 DEST_KEY = queue
 FORMAT = indexQueue

 [set_nullqueue]
 REGEX=C:\\Program Files\\SplunkUniversalForwarder\\bin\\\*
 DEST_KEY=queue
 FORMAT=nullQueue

Bye.
Giuseppe

View solution in original post

gcusello
SplunkTrust
SplunkTrust

Hi
following http://docs.splunk.com/Documentation/Splunk/6.6.2/Forwarding/Routeandfilterdatad put in your indexers something like this:

in props.conf

[WinEventLog:Security]
 TRANSFORMS-set-exclude=set_exclude,set_nullqueue

in transforms.conf

[set_exclude]
 REGEX=.
 DEST_KEY = queue
 FORMAT = indexQueue

 [set_nullqueue]
 REGEX=C:\\Program Files\\SplunkUniversalForwarder\\bin\\\*
 DEST_KEY=queue
 FORMAT=nullQueue

Bye.
Giuseppe

sbbadri
Motivator

@kiran331

[WinEventLog:Security]
blacklist3 = EventCode="4688" New_Process_Name="C:\Program Files\SplunkUniversalForwarder\bin\*"

I hope New_Process_Name as been extracted.

or

[WinEventLog:Security]
blacklist3 = EventCode="4688" Message="A new process has been created."

0 Karma

kiran331
Builder

I tried blacklist3 = EventCode="4688" New_Process_Name="C:\Program Files\SplunkUniversalForwarder\bin\*", it dint worked

0 Karma

adonio
Ultra Champion

you are missing a "\" at the end after bin\
there supposed to be 2 of them \

0 Karma

adonio
Ultra Champion

i think its better to disable the monitoring of regmon if possible
if you want to filter events, start here:
http://docs.splunk.com/Documentation/Splunk/6.6.2/Forwarding/Routeandfilterdatad
hope it helps

0 Karma

kiran331
Builder

Hi Adonio,

I tried

blacklist3 = EventCode="4688" Message="New Process Name: (?i)^(C:\Program Files\Splunk(?:UniversalForwarder)?\bin\(?:btool|splunkd|splunk|splunk-(?:MonitorNoHandle|admon|netmon|perfmon|powershell|regmon|winevtlog|winhostinfo|winprintmon|wmi)).exe)" in inputs.conf, its not working. Is there anything I have to change in it.

0 Karma
Get Updates on the Splunk Community!

Building Reliable Asset and Identity Frameworks in Splunk ES

 Accurate asset and identity resolution is the backbone of security operations. Without it, alerts are ...

Cloud Monitoring Console - Unlocking Greater Visibility in SVC Usage Reporting

For Splunk Cloud customers, understanding and optimizing Splunk Virtual Compute (SVC) usage and resource ...

Automatic Discovery Part 3: Practical Use Cases

If you’ve enabled Automatic Discovery in your install of the Splunk Distribution of the OpenTelemetry ...