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Downloading Splunk Add-On for Microsoft Sysmon
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Splunk Add-On for Microsoft Sysmon

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This app has been archived. Learn more about app archiving.
This app is NOT supported by Splunk. Please read about what that means for you here.
Overview
Details
IMPORTANT NOTE!

The Splunk Add-on for Sysmon is a new Splunk-supported add-on, and is different from the Splunk Add-on for Microsoft Sysmon (this add-on). The community-supported add-on will continue to exist, but because the Splunk Add-on for Sysmon contains enhancements to events field mappings and Common Information Model (CIM) changes, the best practice is to migrate your Microsoft Sysmon data ingestion from this community-supported add-on to the Splunk-supported add-on.

For information on the differences in the technical support for different Splunkbase app or add-ons, see the Support content topic in the Splunk Developer Guide at this URL:

https://docs.splunk.com/Documentation/AddOns/released/MSSysmon/Sysmonproductcomparisons

It's important to thoroughly test your correlation searches and other Splunk knowledge objects with the new TA before you migrate!


Provides a data input and CIM-compliant field extractions for Microsoft Sysmon. The Microsoft Sysmon utility provides data on process creation (including parent process ID), network connections, and much more.

This add-on was originally created by Adrian Hall. We appreciate Adrian's contribution and his willingness to turn over control to the current team for ongoing maintenance and development.

TA-Microsoft-Sysmon

  • Original Author: Adrian Hall
  • Current maintainers: Splunkworks

Update History

10.6.2

10.6.1

10.5.0

10.4.0

10.3.0

10.2.0

  • February 9, 2020
  • Tested with Sysmon version 10
  • (https://docs.microsoft.com/en-us/sysinternals/downloads/sysmon)
  • Added Event Type [ms-sysmon-dns], to capture EventCode=22 Sysmon events as DNS events.
  • Added network/resolution/dns tags for event type [ms-sysmon-dns].
  • Added FIELDALIAS for query/reply_code_id for CIM compatibility.
  • Added transform entry [extract_dns_record_data] to extract record info for DNS responses like CNAME. Added transform entry [extract_dns_ip_data] to properly extract IP addresses from DNS responses.

10.1.0

10.0.0

8.1.0

8.0.0

6.0.8

6.0.7

6.0.6

6.0.5

  • Sep 12, 2017
  • Support for new features of Sysmon v6.10

6.0.4

  • Sep 9, 2017
  • Prep for Splunk certification.

6.0.3

6.0.2

  • Field extractions added including but not limited to cmdline, parent_process,
  • and parent_process_id.
  • Special thanks to David Dorsey (https://github.com/trogdorsey) for this contribution.

6.0.1

  • Field extractions for MD5, SHA1, SHA256, IMPHASH
  • Special thanks to David Staulcup (https://github.com/dstaulcu) for ongoing assistance and contributions

6.0.0

5.0.0

  • Updates to support sysmon V5
  • Note the sample configuration included below was modified to exclued the
  • ImageLoad section which was found to be causing BSOD on some Windows 7 test systems.
  • Special thanks to David Staulcup (https://github.com/dstaulcu) for ongoing assistance and contributions

4.0.0

  • Minor updates to support Sysmon V4 and optimize the hash field extraction.

3.2.3

  • Minor updates to add workflow actions via pull request and subsequent fine tuning.

3.2.2

  • Minor updates to extract various hash values into individual fields for convenience:

3.2.1

  • Minor updates to align with sysmon version 3.21. For details see:

3.1.1

  • Major modification of the version to better align with SplunkBase.
  • Fixed typos in eventtypes.conf and props.conf

0.3.1

  • Lookup table added to support Sysmon 3.1
  • Additional CIM compliance added
  • Example config added
  • Revved to version 0.3.1 to match current Sysmon version

Using this TA

Configuration: Install TA via GUI on all search heads, install via your preferred method (manual or Deployment Server) on forwarders running on Windows that have Sysmon 3.1 or greater installed.

Ensure that you have at least version 6.2.0 universal forwarders to take advantage of Windows XML event log format.

Sysmon ProcessCreate events may pick up passwords in CommandLine and ParentCommandLine fields. Depending on organizational policy you may be required to mask passwords either at search time or prior to indexing. SEDCMD entries can be added to props.conf files on search heads or indexers to mask data in known positions of passwords. Note this contribution has not been widely tested and may require substantial additional configuration and tuning effort. Use at your own risk.

SEDCMD-pwd_rule1 = s/ -pw ([^\s\<])+/ -pw ***MASK***/g

The Sysmon v10 configuration XML spec does not allow for mutiple log-write exclusions based on rule groups. It is possible to achieve complex log forwarding exclusions for high volume DNS Query Events with inputs.conf blacklist specs. See comments in inputs.conf for implementation examples.

For additional info on Sysmon see: (http://blogs.splunk.com/2014/11/24/monitoring-network-traffic-with-sysmon-and-splunk/)

Support

This is a community supported TA. As such, post to answers.splunk.com and reference it.

Recommended Configuration

We strongly recommend that you use the popular Sysmon configuration shared by SwiftOnSecurity as your starting point:

(https://github.com/SwiftOnSecurity/sysmon-config)

Previously Recommended Configuration

3/16/2017 - The following configuration guidance was included historically
but should now be considered deprecated. We suggest instead that you use the
SwiftOnSecurity configuration as a starting point, and tune it to meet your needs.
You may choose to use elements of the legacy configuration below, particularly if
you are interested in excluding common Splunk image/file names from creating Sysmon
events.

NOTE: If you choose to exclude certain events based on file name, please be aware
that this could potentially be abused by an attacker to hide malicious activity by
choosing an excluded name for their malware. If you are not willing to accept this
risk, do not use the configuration below.

Sysmon is capable of delivering a large amount of events into your
Splunk instance. The following configuration, loaded into each
system running Sysmon 3.1 or greater, will reduce the amount of data considerably.
Special thanks go to Jeff Walzer from the University of Pittsburgh for
originally helping to test this (walzer@pitt.edu).

Load this via sysmon -c (filename) from an admin-level command prompt.
(after you have placed it in a text file). You may get some
unusual errors - these are benign and can be ignored. Check the
filtering via a "sysmon -c" with no argument.

For additional Sysmon filtering, remove the entire ImageLoad section.

<Sysmon schemaversion="3.2">
  <HashAlgorithms>*</HashAlgorithms>
  <EventFiltering>
    <!-- Log all drivers except if the signature -->
    <!-- contains Microsoft or Windows -->
    <DriverLoad onmatch="exclude">
      <Signature condition="contains">microsoft</Signature>
      <Signature condition="contains">windows</Signature>
    </DriverLoad>
    <!-- Exclude certain processes that cause high event volumes -->
    <ProcessCreate onmatch="exclude">
      <Image condition="contains">splunk</Image>
      <Image condition="contains">streamfwd</Image>
      <Image condition="contains">splunkd</Image>
      <Image condition="contains">splunkD</Image>
      <Image condition="contains">splunk</Image>
      <Image condition="contains">splunk-optimize</Image>
      <Image condition="contains">splunk-MonitorNoHandle</Image>
      <Image condition="contains">splunk-admon</Image>
      <Image condition="contains">splunk-netmon</Image>
      <Image condition="contains">splunk-regmon</Image>
      <Image condition="contains">splunk-winprintmon</Image>
      <Image condition="contains">btool</Image>
      <Image condition="contains">PYTHON</Image>
    </ProcessCreate>
    <ProcessTerminate onmatch="exclude">
      <Image condition="contains">splunk</Image>
      <Image condition="contains">streamfwd</Image>
      <Image condition="contains">splunkd</Image>
      <Image condition="contains">splunkD</Image>
      <Image condition="contains">splunk</Image>
      <Image condition="contains">splunk-optimize</Image>
      <Image condition="contains">splunk-MonitorNoHandle</Image>
      <Image condition="contains">splunk-admon</Image>
      <Image condition="contains">splunk-netmon</Image>
      <Image condition="contains">splunk-regmon</Image>
      <Image condition="contains">splunk-winprintmon</Image>
      <Image condition="contains">btool</Image>
      <Image condition="contains">PYTHON</Image>
    </ProcessTerminate>
    <FileCreateTime onmatch="exclude">
      <Image condition="contains">splunk</Image>
      <Image condition="contains">streamfwd</Image>
      <Image condition="contains">splunkd</Image>
      <Image condition="contains">splunkD</Image>
      <Image condition="contains">splunk</Image>
      <Image condition="contains">splunk-optimize</Image>
      <Image condition="contains">splunk-MonitorNoHandle</Image>
      <Image condition="contains">splunk-admon</Image>
      <Image condition="contains">splunk-netmon</Image>
      <Image condition="contains">splunk-regmon</Image>
      <Image condition="contains">splunk-winprintmon</Image>
      <Image condition="contains">btool</Image>
      <Image condition="contains">PYTHON</Image>
    </FileCreateTime>
  </EventFiltering>
</Sysmon>

Release Notes

Version 10.6.2
March 8, 2020

Fixes minor AppInspect failures

Version 10.6.1
March 6, 2020
Version 10.6.0
March 6, 2020
Version 10.4.0
March 2, 2020
Version 10.3.0
Feb. 21, 2020
Version 10.2.0
Feb. 9, 2020
Version 10.1.0
Jan. 30, 2020

July 30, 2019
Tested with Sysmon version 10
https://docs.microsoft.com/en-us/sysinternals/downloads/sysmon
Updates to work with the new Splunk_TA_windows v5 and onwards - https://docs.splunk.com/Documentation/WindowsAddOn/5.0.1/User/Upgrade#Upgrade_from_version_4.8.4_to_version_5.0.1
All searches,reports and dashboards using sourcetype="XmlWinEventLog:Microsoft-Windows-Sysmon/Operational" need to use source="XmlWinEventLog:Microsoft-Windows-Sysmon/Operational" instead, due to the upgrade to Splunk_TA_windows v5

Version 10.0.0
Dec. 18, 2019

Tested with Sysmon version 10
https://docs.microsoft.com/en-us/sysinternals/downloads/sysmon
Added support for Sysmon v10 having new DNS Query event type.
Provided inputs.conf examples enabling blacklist of multiple DNS Query events based on complex rule groups

Version 8.1.0
March 27, 2019

December 11, 2018
Tested with Sysmon version 8.0
https://docs.microsoft.com/en-us/sysinternals/downloads/sysmon
Updates to work with the new Splunk Enpoint Data Model - http://docs.splunk.com/Documentation/CIM/4.12.0/User/Endpoint
Thanks to Bhavin Patel for contributions (@patel-bhavin)

Version 8.0.0
July 11, 2018
Version 6.0.8
June 8, 2018
Version 6.0.7
Dec. 6, 2017
Version 6.0.5
Nov. 4, 2017
Version 6.0.4
Sept. 9, 2017
Version 6.0.3
Sept. 9, 2017
Version 6.0.2
Sept. 6, 2017
Version 6.0.0
March 13, 2017
Version 5.0.0
Nov. 22, 2016

Updated lookups to support Sysmon V5.

Version 4.0.0
Oct. 1, 2016
Version 3.2.3
May 31, 2016
Version 3.2.2
May 28, 2016

Now extracts various hash values into convenient fields. See https://github.com/splunk/TA-microsoft-sysmon/issues

Version 3.2.1
April 26, 2016

Several minor bugfixes and enhancements. Tested with Microsoft Sysmon version 3.21

Version 3.1.1
Sept. 29, 2015

3.1.1

Major modification of the version to better align with SplunkBase.
Fixed typos in eventtypes.conf and props.conf

Version 0.3.1
Sept. 29, 2015

Version 0.3.1 was contributed by James Brodsky.

-Confirmed to work with Sysmon 3.1
-Some more CIM work
-new README file
-example Sysmon config (in readme)
-Lookup file to map event codes to event descriptions

Version 0.1.1
Dec. 1, 2014

Added CIM compliance for process events

Version 0.1.0
Nov. 24, 2014

Initial CIM-compliant Release


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