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When trying to install Panther Analysis Tool I encounter the following error: "AttributeError: module 'lib' has no attribute 'OpenSSL_add_all_algorithms'"


When attempting to install PAT, I encounter the following error: AttributeError: module 'lib' has no attribute 'OpenSSL_add_all_algorithms'.


To resolve this issue:

  • Execute your command in a virtual environment using pipenv (i.e. pipenv run pip3 install panther_analysis_tool)
  • Install the dependency in your local environment by running pip3 install -U pyopenssl cryptography
  • Cause

This issue arises because your command attempts to execute in your local Python environment, which lacks the necessary dependencies.