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Malicious package

modulebuild3240234tPyPI

Advisory published Updated

modulebuild3240234t is a confirmed malicious PyPI package (MAL-2026-5029) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.0, 1.0.1, 2.0.0…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in modulebuild3240234t (PyPI)

MAL-2026-5029
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall modulebuild3240234t

What this malware does

The package contains an infostealer targeting the Roblox ecosystem.

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

Campaign: 2026-05-modulebuild3240234t

Reasons (based on the campaign):

  • obfuscation

  • infostealer

  • exfiltration-credentials

Malicious versions

4 flagged
1.0.01.0.12.0.03.0.0

Indicators of compromise (SHA-256)

4d5962bd4c41d59c276f1fa132030098e557dee6bfe0b0a368a952f70d217287

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for modulebuild3240234t (4 malicious versions).

  2. If you installed it — respond

    modulebuild3240234t 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 modulebuild3240234t 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. modulebuild3240234t on PyPI has been identified as a malicious package (versions 1.0.0, 1.0.1, 2.0.0, 3.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-05-modulebuild3240234t

References

Credits

  • Kamil Mańkowski (kam193) · reporter

Detect & block this

O3 blocks modulebuild3240234t-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

modulebuild3240234t (PyPI) malicious package — MAL-2026-5029 | O3 Security