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LowSigmaHQJakob Weinzettl +1

Overwriting the File with Dev Zero or Null

Detects overwriting (effectively wiping/deleting) of a file.

Detection logic

Detection requirements

Platform
ContainersESXiIaaSLinuxmacOSWindows

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

Log source product
linux
Log source service
auditd

Known benign triggers

  • Appending null bytes to files.
  • Legitimate overwrite of files.

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