MediumSigmaHQ X__Junior

Clfs.SYS Loaded By Process Located In a Potential Suspicious Location

Detects Clfs.sys being loaded by a process running from a potentially suspicious location. Clfs.sys is loaded as part of many CVEs exploits that targets Common Log File.

Detection logic

Detection requirements

Platform: Containers ESXi IaaS Identity Provider Linux macOS Network Devices Office Suite SaaS Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: windows
Log source category: image_load

Known benign triggers

Unknown

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
ssd-disclosure.com/ssd-advisory-common-log-file-system-clfs-driver-pe/	Unclassified	Only this detection cites it
x.com/Threatlabz/status/1879956781360976155	Social post	Only this detection cites it

Detection rules

Clfs.SYS Loaded By Process Located In a Potential Suspicious Location

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules