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resolvedcritical

Malicious code in adad (PyPI)

The PyPI package 'adad' contained malicious code as part of a campaign by EsqueleSquad group that published nearly 6000 malicious packages across PyPI and NPM. The package executed spyware and information-stealing malware.

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Disclosed
Last updated
Blast radius
Potentially thousands of installations; part of a large-scale malicious package campaign affecting PyPI and NPM ecosystems.
Ecosystems
PyPI
Attack vectors
Compromised package
Threat actor
Esquelesquad
Affected entities
  • adadPyPI package containing malicious code

The PyPI package 'adad' was identified as containing malicious code. This package was part of a large-scale coordinated campaign by the EsqueleSquad group, which published nearly 6000 malicious packages across both PyPI and NPM ecosystems.

The malicious code in these packages was designed to execute spyware and information-stealing malware on affected systems. The incident was documented and tracked by the OpenSSF (Open Source Security Foundation) in their malicious-packages repository.

This represents a significant supply chain attack affecting the Python ecosystem, with the potential for widespread impact across any systems that installed the affected package.

Indicators of compromise

Packages
  • adad

Remediation

  • Immediately uninstall the 'adad' package from all systems
  • Audit systems that previously installed 'adad' for signs of compromise, including unauthorized access, data exfiltration, or persistence mechanisms
  • Review PyPI package dependencies to identify and remove any other packages from the EsqueleSquad campaign
  • Monitor for indicators of compromise related to spyware and information-stealing malware
  • Update security policies to include verification of package sources and maintainer reputation

Sources

  1. GitHub Advisory GHSA-2jf5-9g5w-25c6 · GitHub Advisory Database

Cite this entry

"Malicious code in adad (PyPI)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 21, 2026; last updated July 21, 2026. https://supplychainattack.org/incident/malicious-code-in-adad-pypi-1raxz3

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