Data Source: Linux Messages Syslog

Date: 2025-05-06

ID: c9e3bbb5-e0a2-4bac-8457-227e71841bda

Author: Ravent Tait, Splunk

Description

Logs kernel events on a Linux system, including service starts/stops, hardware events, authentication notices, and other OS-level activity.

Details

Property	Value
Source	`/var/log/kern`
Sourcetype	`linux_messages_syslog`

Name ▲▼	Technique ▲▼	Type ▲▼
Linux Binary Launched Process with Null Argv	Exploitation for Privilege Escalation	TTP
Linux PF_ALG Registration Outside of Boot Window	Exploitation for Privilege Escalation	TTP

Supported Apps

Splunk Add-on for Unix and Linux (version 10.2.0)

Event Fields

+ Fields

  <span class="pill kill-chain">_time</span>
  
  <span class="pill kill-chain">action</span>
  
  <span class="pill kill-chain">app</span>
  
  <span class="pill kill-chain">date_hour</span>
  
  <span class="pill kill-chain">date_mday</span>
  
  <span class="pill kill-chain">date_minute</span>
  
  <span class="pill kill-chain">date_month</span>
  
  <span class="pill kill-chain">date_second</span>
  
  <span class="pill kill-chain">date_wday</span>
  
  <span class="pill kill-chain">date_year</span>
  
  <span class="pill kill-chain">date_zone</span>
  
  <span class="pill kill-chain">dest</span>
  
  <span class="pill kill-chain">dvc</span>
  
  <span class="pill kill-chain">eventtype</span>
  
  <span class="pill kill-chain">host</span>
  
  <span class="pill kill-chain">index</span>
  
  <span class="pill kill-chain">linecount</span>
  
  <span class="pill kill-chain">pid</span>
  
  <span class="pill kill-chain">process</span>
  
  <span class="pill kill-chain">punct</span>
  
  <span class="pill kill-chain">source</span>
  
  <span class="pill kill-chain">sourcetype</span>
  
  <span class="pill kill-chain">splunk_server</span>
  
  <span class="pill kill-chain">src</span>
  
  <span class="pill kill-chain">src_port</span>
  
  <span class="pill kill-chain">sshd_protocol</span>
  
  <span class="pill kill-chain">tag</span>
  
  <span class="pill kill-chain">tag::action</span>
  
  <span class="pill kill-chain">tag::eventtype</span>
  
  <span class="pill kill-chain">timeendpos</span>
  
  <span class="pill kill-chain">timestartpos</span>
  
  <span class="pill kill-chain">user</span>
  
  <span class="pill kill-chain">user_name</span>
  
  <span class="pill kill-chain">vendor_action</span>
  
  <span class="pill kill-chain">vendor_product</span>
  
</div>

Example Log

1May  6 17:24:00 ubuntu kernel: [  801.664268] NET: Registered PF_ALG protocol family

Source: GitHub | Version: 1