HighSigmaHQ Nasreddine Bencherchali (Nextron Systems)

Suspicious Service DACL Modification Via Set-Service Cmdlet - PS

Detects usage of the "Set-Service" powershell cmdlet to configure a new SecurityDescriptor that allows a service to be hidden from other utilities such as "sc.exe", "Get-Service"...etc. (Works only in powershell 7)

Detection logic

Detection requirements

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

Known benign triggers

Rare FP could occur due to the non linearity of the ScriptBlockText log
Rare intended use of hidden services

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
learn.microsoft.com/en-us/powershell/module/microsoft.powershell.management/set-service?view=powershell-7.2	Product documentation	3
twitter.com/Alh4zr3d/status/1580925761996828672	Social post	5

Detection rules

Suspicious Service DACL Modification Via Set-Service Cmdlet - PS

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules