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Malicious package

mflux-streamlitPyPI

Malicious code in mflux-streamlit (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2026-5301
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall mflux-streamlit

What this malware does

The package was found to contain malicious code or consuming dependency that contains malicious code

Versions 0.0.3, 0.0.4 were compromised.

Compromised packages start an obfuscated infostealer. The infostealer is a heavily obfuscated JavaScript code executed using Bun runtime on Python startup. It collectes all kinds of sensitive data, including API keys, credentials to package repositories, cryptocurrency assets, password manager data. Infostealer actively queries online services to collect additional secrets as well as attempts to gain persistence and spread further by publishing infected packages using collected credentials. Data are exfiltrated likely using Github. The code seems to threaten to wipe the user's data if it detects invalid GitHub tokens. Cleanup should be done with caution.

It seems to be related to the recent Mini Shai Hulud campaign.

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

Campaign: 2026-06-compr-woodpecker

Reasons (based on the campaign):

  • compromised-package

  • exfiltration-env-variables

  • exfiltration-cloud-tokens

  • exfiltration-credentials

  • abuses-pth

  • obfuscation

  • infostealer

  • The package contains code to detect if it is running in a sandbox environment.

  • exfiltration-crypto

  • files-exfiltration

  • destructive-actions

Malicious versions

2 flagged
0.0.30.0.4

Indicators of compromise (SHA-256)

27ef4c7f33e59dbe037d4b212286dd08cb7b1824c28c0032eb2d91db7a2b0174
78056caffa187ecd62662eefc42d17dd25cb0d010fd6995b2a1857889ebe3b72
24886fb9c3f7248367f9e8709b3ef1245a010d0bed4a35f1b83f0199b2498dba
5da8453add83bdfa35dc65b2be55d7820ae94737974de952b77cfb4fc79d735e
9924feddaacd4b86934ddc7bdf8ff498921a80b34bf99a9136baa592fcc504b6
5a5969e0bdbaab767b8a6de48420d21566df2dcaee8c655fd82a34bceada7fd3

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for mflux-streamlit (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging mflux-streamlit across your stack and pipelines.

  2. If you installed it — respond

    mflux-streamlit 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 mflux-streamlit was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks mflux-streamlit before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. mflux-streamlit on PyPI has been identified as a malicious package (versions 0.0.3, 0.0.4 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-06-compr-woodpeckerIN-MAL-2026-008588IN-MAL-2026-008905

References

Credits

  • Amazon Inspector · finder
  • Kamil Mańkowski (kam193) · reporter

Detect & block this

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

mflux-streamlit (PyPI) malicious package — MAL-2026-5301 | O3 Security