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Splunk ES Content Update

Splunk Cloud
Splunk Built
The Splunk ES Content Update (ESCU) app delivers pre-packaged Security Content. ESCU provides regular Security Content updates to help security practitioners address ongoing time-sensitive threats, attack methods, and other security issues.

Security Content consists of tactics, techniques, and methodologies that help with detection, investigation, and response. Security Content enables security teams to directly operationalize detection searches, investigative searches, and other supporting details. ESCU can generate Notable Events in Splunk Enterprise Security. Security Content also contains easy-to-read background information and guidance, for key context on motivations and risks associated with attack techniques, as well as pragmatic advice on how to combat those techniques.

The analytic stories and their searches are also available at https://github.com/splunk/security-content.

For more information please visit the Splunk ES Content Update user documentation.

Release Notes

Version 3.47.0
Aug. 16, 2022
Version 3.46.0
Aug. 1, 2022
Version 3.45.0
July 20, 2022
Version 3.44.0
June 29, 2022
Version 3.43.0
June 14, 2022
Version 3.42.0
June 6, 2022
Version 3.41.0
May 31, 2022
Version 3.40.0
May 23, 2022
Version 3.39.0
May 2, 2022
Version 3.38.0
April 12, 2022
Version 3.37.0
March 29, 2022
Version 3.36.0
March 4, 2022
Version 3.35.0
Feb. 16, 2022
Version 3.34.0
Jan. 26, 2022
Version 3.33.0
Jan. 14, 2022
Version 3.32.0
Dec. 15, 2021
Version 3.31.0
Dec. 2, 2021
Version 3.30.0
Oct. 29, 2021
Version 3.29.0
Sept. 27, 2021
Version 3.28.0
Sept. 9, 2021
Version 3.27.0
Aug. 18, 2021
Version 3.26.0
Aug. 12, 2021
Version 3.25.0
July 2, 2021
Version 3.24.0
June 24, 2021
Version 3.23.0
June 10, 2021
Version 3.22.0
May 24, 2021
Version 3.21.0
May 13, 2021
Version 3.20.0
April 29, 2021
Version 3.19.0
April 15, 2021

New Analytic Stories

  • Bits Jobs
  • Domain Trust Discovery

New Detections

  • BITSAdmin Download File
  • BITS Job Persistence
  • PowerShell Start-BitsTransfer
  • DSQuery Domain Discovery
  • Disable Registry Tool
  • Disable Show Hidden Files
  • Disable Windows Behavior Monitoring
  • Disable Windows SmartScreen Protection
  • Disabling CMD Application
  • Disabling ControlPanel
  • Disabling Firewall with Netsh
  • Disabling FolderOptions Windows Feature
  • Disabling NoRun Windows App
  • Disabling SystemRestore In Registry
  • Disabling Task Manager
  • AWS Excessive Security Scanning
  • Malicious Powershell Executed As A Service (Thank you Ryan Becwar for contributing)


  • Clop Common Exec Parameter detection updated
Version 3.18.0
March 29, 2021
Version 3.17.0
March 16, 2021
Version 3.16.0
March 4, 2021
Version 3.15.0
Feb. 18, 2021
Version 3.14.0
Feb. 4, 2021
Version 3.13.0
Jan. 27, 2021
Version 3.12.0
Jan. 19, 2021

New Detections
AWS detect users creating keys with encrypt policy without MFA
BCDEdit Failure Recovery Modification
AWS network access control list created with all open ports
AWS network access control list deleted
Detect new open S3 Buckets over AWS CLI
O365 bypass MFA via trusted IP
* Detect hosts connecting to dynamic domain providers

AWS detect users with kms keys performing encryption against S3 buckets
Detect new open S3 buckets

Circle CI Config updates
Increase in testing coverage
* Added notable alert action configurations to all savedsearches

Version 3.11.0
Jan. 7, 2021

New Detections:
Multi-factor authentication disabled (o365)
Excessive Authentication Failures Alert (o365)
PST Export Alert (o365)
Detect high number of login failures from a single source
* Detect Supernova Webshell (used in SUNBURST)

High number of login failures from a single source detection
Deprecated AWS Searches that have been translated.
Circle CI Config updates
Increase in testing coverage

Version 3.10.0
Dec. 18, 2020

New Stories
* Sunburst Malware
* Office 365 Detections

New Detections
Windows AdFind Exe
Sunburst Correlation DLL and Network Event
O365 Suspicious Admin Email Forwarding
O365 Suspicious Rights Delegation
* O365 Suspicious User Email Forwarding

Updates to response tasks and backend to handle multi-token replacement
Analytic Story name added to annotations

Version 3.9.0
Dec. 4, 2020

New Detections
Ryuk Test Files Detected
Windows connhost exe started forcefully
Windows DisableAntiSpyware Registry
Windows Security Account Manager Stopped

To view the all the release notes, please visit : https://github.com/splunk/security-content/releases/tag/v3.9.0

Note: We have also updated the app versioning of ESCU

Version 3.0.9
Nov. 10, 2020
Version 3.0.8
Oct. 20, 2020
Version 3.0.7
Sept. 21, 2020
Version 3.0.6
Aug. 28, 2020
Version 3.0.5
Aug. 5, 2020

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