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Wow6432Node Windows NT CurrentVersion Autorun Keys Modification

Sigma Rules

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Summary
This detection rule identifies modifications made to the autostart extensibility point (ASEP) within the Windows NT registry under the Wow6432Node path. The rule specifically monitors changes to critical registry keys such as 'AppInit_Dlls', 'Image File Execution Options', and 'Drivers32' under the key 'SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion'. Modifications to these values can indicate persistence mechanisms utilized by malicious actors to ensure their payloads execute during system startup. The rule is designed to flag changes that do not correspond to legitimate administrative actions or known software behaviors, thus helping to mitigate risks associated with unauthorized persistence techniques. False positives are recognized, including legitimate software installations or administrative actions that also modify these keys. The detection is classified at a medium severity level, reflecting its importance in recognizing potential threats to system integrity and security.
Categories
  • Windows
  • Endpoint
Data Sources
  • Windows Registry
ATT&CK Techniques
  • T1547.001
Created: 2019-10-25