Splunk Search

Field extract

keyu921
Explorer

I want to extract the client ip and user "DELTA\Kelly" from the windows event messages


Message=The following client performed a SASL (Negotiate/Kerberos/NTLM/Digest) LDAP bind without requesting signing (integrity verification), or performed a simple bind over a cleartext (non-SSL/TLS-encrypted) LDAP connection.
Client IP address:
172.4.5.6:57157
Identity the client attempted to authenticate as:
DELTA\Kelly
Binding Type:

Fixed..... Please close

Labels (2)
0 Karma
1 Solution

bowesmana
SplunkTrust
SplunkTrust
| makeresults
| eval Message="The following client performed a SASL (Negotiate/Kerberos/NTLM/Digest) LDAP bind without requesting signing (integrity verification), or performed a simple bind over a cleartext (non-SSL/TLS-encrypted) LDAP connection.
Client IP address:
172.4.5.6:57157
Identity the client attempted to authenticate as:
DELTA\Kelly
Binding Type:

Fixed..... Please close"
| rex field=Message "(?ms).*Client IP address:[^\d]+(?<ip>\d+\.\d+\.\d+.\d+).*authenticate as:[\r\n\s]+(?<domain>\w+)\\\(?<user>[\w ]+)"

This should work and will extract the fields ip, domain and user. If you want to include the user and domain as a single value, then  get rid of the (?<domain>\w+) \\\ and add change the user extraction to 

(?<user>[\w\\\ ]+)

 

View solution in original post

0 Karma

bowesmana
SplunkTrust
SplunkTrust
| makeresults
| eval Message="The following client performed a SASL (Negotiate/Kerberos/NTLM/Digest) LDAP bind without requesting signing (integrity verification), or performed a simple bind over a cleartext (non-SSL/TLS-encrypted) LDAP connection.
Client IP address:
172.4.5.6:57157
Identity the client attempted to authenticate as:
DELTA\Kelly
Binding Type:

Fixed..... Please close"
| rex field=Message "(?ms).*Client IP address:[^\d]+(?<ip>\d+\.\d+\.\d+.\d+).*authenticate as:[\r\n\s]+(?<domain>\w+)\\\(?<user>[\w ]+)"

This should work and will extract the fields ip, domain and user. If you want to include the user and domain as a single value, then  get rid of the (?<domain>\w+) \\\ and add change the user extraction to 

(?<user>[\w\\\ ]+)

 

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!

At .conf26, Don’t Just See What’s Next. Help Shape It at Innovation Labs.

Long before a new capability reaches the keynote stage, it begins as an idea waiting to be tested. At ...

Forwarder Topology Guidance: Intermediate HF vs Intermediate UF

Why Universal Forwarders Should Not Be Used as Intermediate Forwarders A practical Splunk forwarding topology ...

Data Management Digest – August 2026

Data Management Digest   Welcome to the August 2026 edition of Data Management Digest! August was a big month ...