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Malicious package

hhonestjsonPyPI

Advisory published Updated

hhonestjson is a confirmed malicious PyPI package (MAL-2024-12286) that executes malicious code on install (malicious version 0.1.3). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in hhonestjson (PyPI)

MAL-2024-12286
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall hhonestjson

What this malware does

Packages that might be part of testing for pentesting / malicious activity / joy, with suspicious activity that does not present any real harm.

Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.

Campaign: GENERIC-simple-tests

Reasons (based on the campaign):

  • The package overrides the install command in setup.py to execute malicious code during installation.

Malicious versions

1 flagged
0.1.3

Indicators of compromise (SHA-256)

f64a605ab4bc4b122c9046f8617a0a13b0613a707b6c100328512c9a9a72d034
7480d804fb7855d31478b425829528af92f02bdbd6f6ffdab2e500b1cc8b3bc5
86c7d07b23b3cb99afc8e574dbb5d35b487e94457c97c465a5b9e7c0ffea9852
af37655a16eea5184c9a4920fb23614bc25fda04fbafd89a176ca6327bd36970

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for hhonestjson (version 0.1.3).

  2. If you installed it — respond

    Remove hhonestjson from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

  3. Did it already run?

    If hhonestjson was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. hhonestjson on PyPI has been identified as a malicious package (version 0.1.3 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GENERIC-simple-tests

References

Credits

  • Kamil Mańkowski (kam193)

Detect & block this

O3 blocks hhonestjson-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Explore

hhonestjson (PyPI) malicious package — MAL-2024-12286 | O3 Security