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T1546.018: Python Startup Hooks

View on MITRE ATT&CK The MITRE Corporation · Published 22/05/2025 21:20 · Modified 27/03/2026 01:11

Essential information

MITRE technique ID
T1546.018
Confidence
100/100
Revoked
No
Published
22/05/2025 21:20
Modified
27/03/2026 01:11
Author / Source
The MITRE Corporation

Platforms

windows macos linux

Description

Adversaries may achieve persistence by leveraging Python’s startup mechanisms, including path configuration (`.pth`) files and the `sitecustomize.py` or `usercustomize.py` modules. These files are automatically processed during the initialization of the Python interpreter, allowing for the execution of arbitrary code whenever Python is invoked.(Citation: Volexity GlobalProtect CVE 2024) Path configuration files are designed to extend Python’s module search paths through the use of import statements. If a `.pth` file is placed in Python's `site-packages` or `dist-packages` directories, any lines beginning with `import` will be executed automatically on Python invocation.(Citation: DFIR Python Persistence 2025) Similarly, if `sitecustomize.py` or `usercustomize.py` is present in the Python path, these files will be imported during interpreter startup, and any code they contain will be executed.(Citation: Python Site Configuration Hook) Adversaries may abuse these mechanisms to establish persistence on systems where Python is widely used (e.g., for automation or scripting in production environments).

Kill chain phases

Kill chainPhase
mitre-attack persistence
mitre-attack privilege-escalation

Marking (TLP)

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External references