MediumSplunk security content Michael Haag +1Threat hunting

Get WMIObject Group Discovery with Script Block Logging

Description

The following analytic detects the execution of the `Get-WMIObject Win32_Group` command using PowerShell Script Block Logging (EventCode=4104). This method captures the full command sent to PowerShell, allowing for detailed analysis. Identifying group information on an endpoint is not inherently malicious but can be suspicious based on context such as time, endpoint, and user. This activity is significant as it may indicate reconnaissance efforts by an attacker. If confirmed malicious, it could lead to further enumeration and potential lateral movement within the network.

Detection logic

Detection requirements

Platform: Linux macOS Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source category: powershell_script_block_logging_4104

Known benign triggers

False positives may be present. Tune as needed.

References

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
blog.palantir.com/tampering-with-windows-event-tracing-background-offense-and-defense-4be7ac62ac63	Unclassified	19from 2 sources
github.com/redcanaryco/atomic-red-team/blob/388942adbd9641f4dfdcf079d7efe9a75ec0ac43/atomics/T1069.001/T1069.001.yaml#L94	Detection test	6
github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1069.001/T1069.001.md	Detection test	6
help.splunk.com/en/security-offerings/splunk-user-behavior-analytics/get-data-in/5.4.1/add-other-data-to-splunk-uba/configure-powershell-logging-to-see-powershell-anomalies-in-splunk-uba.	Product documentation	15
static1.squarespace.com/static/552092d5e4b0661088167e5c/t/59c1814829f18782e24f1fe2/1505853768977/Windows+PowerShell+Logging+Cheat+Sheet+ver+Sept+2017+v2.1.pdf	Unclassified	17
www.crowdstrike.com/blog/investigating-powershell-command-and-script-logging/	Security research	17
www.splunk.com/en_us/blog/security/powershell-detections-threat-research-release-august-2021.html	Security research	2

Detection rules

Get WMIObject Group Discovery with Script Block Logging

Description

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules