NIST deprecates RSA-2048 from 2030. Find every one of them before attackers do.
Malicious package

initialtestingdonotpull1235PyPI

Advisory published Updated

initialtestingdonotpull1235 is a confirmed malicious PyPI package (MAL-2025-41435) that steals credentials and exfiltrates sensitive data (malicious version 3.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in initialtestingdonotpull1235 (PyPI)

MAL-2025-41435
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall initialtestingdonotpull1235

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.

The OpenSSF Package Analysis project identified 'initialtestingdonotpull1235' @ 3.0.1 (pypi) as malicious.

It is considered malicious because:

  • The package executes one or more commands associated with malicious behavior.

Malicious versions

1 flagged
3.0.1

Indicators of compromise (SHA-256)

a9622e8d5bdc036e8502ca1158478c805862e882dc7a27f493b01dff9ae76115
ec2eaf178a4fdaf3ce8ed1037695ce3d903c6b425b714026bc3ed26980ec6673
638020a87c6e1aaf4b8542a5b20723a6ed900b986bfd407c8bf55aad3016933f

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for initialtestingdonotpull1235 (version 3.0.1).

  2. If you installed it — respond

    initialtestingdonotpull1235 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 initialtestingdonotpull1235 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. initialtestingdonotpull1235 on PyPI has been identified as a malicious package (version 3.0.1 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)
  • OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks initialtestingdonotpull1235-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

initialtestingdonotpull1235 (PyPI) malicious package — MAL-2025-41435 | O3 Security