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Malicious package

pytelegramapiPyPI

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

MAL-2025-191838
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall pytelegramapi

What this malware does

Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.

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

4 flagged
2.32.52.32.62.32.72.32.8

Indicators of compromise (SHA-256)

72e0c560463c694c82e67af88377f64c9674e3f35896275d16b30fc6d831a7a9
d50aff9e36f41642610a858c0117318ed7483aad0e4f517a1485ca2d66574c2a
da12ed3c016dca01db44da1815fe2a61eef42a83e7b404aa42a734a1170c71b2

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 pytelegramapi (4 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging pytelegramapi across your stack and pipelines.

  2. If you installed it — respond

    pytelegramapi 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 pytelegramapi 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 pytelegramapi 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. pytelegramapi on PyPI has been identified as a malicious package (versions 2.32.5, 2.32.6, 2.32.7, 2.32.8 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GENERIC-standard-pypi-install-pentest

References

Credits

  • Kamil Mańkowski (kam193)

Detect & block this

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

pytelegramapi (PyPI) malicious package — MAL-2025-191838 | O3 Security