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Malicious package

coolpackage2323PyPI

Advisory published Updated

coolpackage2323 is a confirmed malicious PyPI package (MAL-2026-376) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.0, 1.3.2, 6.7.9…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in coolpackage2323 (PyPI)

MAL-2026-376
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall coolpackage2323

What this malware does

During installation and importing the module, the package silently downloads malware

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-01-coolpackage2323

Reasons (based on the campaign):

  • Downloads and executes a remote executable.

  • malware

Malicious versions

4 flagged
1.0.01.3.26.7.99.9.9

Indicators of compromise (SHA-256)

dfe85cdb01cd65f379803d150e3cd9142774bda4f802120401655f71b5b7a907
e9d1509738456c967ea4a1b479352ddd019d6792947fd74a067e64c698221e08
d5f65aa250c9c5fc7adc4aae3b63eda77e56f48cd2f17373e2fdbbeffeb4f790

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for coolpackage2323 (4 malicious versions).

  2. If you installed it — respond

    coolpackage2323 is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

  3. Did it already run?

    If coolpackage2323 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. coolpackage2323 on PyPI has been identified as a malicious package (versions 1.0.0, 1.3.2, 6.7.9, 9.9.9 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-01-coolpackage2323

References

Credits

  • Kamil Mańkowski (kam193) · analyst

Detect & block this

O3 blocks coolpackage2323-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

coolpackage2323 (PyPI) malicious package — MAL-2026-376 | O3 Security