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Potential NFS Destructive Operation Burst

Identifies a burst of successful NFS write activity combined with destructive REMOVE or RENAME operations from a single client to one export server within a one-minute window. Ransomware and destructive actors often…

Description

Identifies a burst of successful NFS write activity combined with destructive REMOVE or RENAME operations from a single client to one export server within a one-minute window. Ransomware and destructive actors often encrypt, delete, or rename large numbers of files on mounted NFS shares; this aggregation surfaces that behavior using NFS opcode telemetry when file paths are not available on the wire.

Detection logic

Its licence does not clear it for publishing here

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Detection requirements

Platform
ESXiIaaSLinuxmacOSWindows

The rule states no platform. This is derived from the ATT&CK technique it maps to.

Known benign triggers

  • Backup deduplication engines, migration utilities, and filesystem sync tools can generate high volumes of legitimate NFS writes. Validate the source against known backup or storage-management hosts before escalating.

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