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HighSigmaHQ Ecco +2

Fsutil Suspicious Invocation

Detects suspicious parameters of fsutil (deleting USN journal, configuring it with small size, etc). Might be used by ransomwares during the attack (seen by NotPetya and others).

Detection logic

Detection requirements

Platform: Containers ESXi IaaS Linux macOS Network Devices Office Suite Windows
The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.
Log source product: windows
Log source category: process_creation

Known benign triggers

Admin activity
Scripts and administrative tools used in the monitored environment

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.cluster25.duskrise.com/2023/05/22/back-in-black-blackbyte-nt	Unclassified	Only this detection cites it
eqllib.readthedocs.io/en/latest/analytics/c91f422a-5214-4b17-8664-c5fcf115c0a2.html	Unclassified	Only this detection cites it
github.com/albertzsigovits/malware-notes/blob/558898932c1579ff589290092a2c8febefc3a4c9/Ransomware/Lockbit.md	Tool	3
github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070/T1070.md	Detection test	Only this detection cites it
learn.microsoft.com/en-us/windows-server/administration/windows-commands/fsutil-usn	Product documentation	2from 2 sources

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