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MySQL User-Defined Function Injection

Identifies MySQL statements that create a user-defined function backed by a shared library. Adversaries with sufficient database privileges can place a malicious library in the MySQL plugin directory and register it…

Description

Identifies MySQL statements that create a user-defined function backed by a shared library. Adversaries with sufficient database privileges can place a malicious library in the MySQL plugin directory and register it with "CREATE FUNCTION ... SONAME", establishing a database-resident primitive for operating-system command execution.

Detection logic

Its licence does not clear it for publishing here

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Detection requirements

Platform
ESXiLinuxmacOSNetwork DevicesWindows

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

Log source category
event_index

Known benign triggers

  • Database administrators may install approved native MySQL user-defined functions during planned maintenance. Validate the function and library names, the client address, the maintenance window, and whether the shared library was supplied through an approved software deployment process.

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