Which versions of hello-world-test-mh2 are malicious?

The following PyPI versions of hello-world-test-mh2 are flagged malicious: 0.0.1. Treat any of these as compromised.

How do I remediate hello-world-test-mh2 if I installed it?

hello-world-test-mh2 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.

I already installed hello-world-test-mh2 — how do I know if it already compromised me?

If hello-world-test-mh2 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.

Is hello-world-test-mh2 part of a known attack campaign?

Yes — hello-world-test-mh2 is associated with the RLMA-2026-05386, IN-MAL-2026-013140 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find hello-world-test-mh2 across my projects, lockfiles, and CI pipelines?

Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for hello-world-test-mh2 (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 hello-world-test-mh2 across your stack and pipelines.

Malicious package

hello-world-test-mh2PyPI

hello-world-test-mh2 is a confirmed malicious PyPI package (MAL-2026-10907) 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 hello-world-test-mh2 (PyPI)

MAL-2026-10907

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

pip uninstall hello-world-test-mh2

What this malware does

setup.py decodes a base64 string and passes the result to exec() at install time. The decoded payload is a single print() statement that emits a benign string. A sibling _exfiltrate() function imports socket and urllib.request but the imported modules are never invoked; the function only prints the local platform name. There is no outbound network I/O, no reads of installer secrets or environment variables, no filesystem persistence beyond what pip itself performs, and no follow-on code execution. The package presents itself as a scanner-test artifact and behaves accordingly. The use of exec() on a base64 blob is poor practice (it matches the shape of install-time droppers and will trip pattern-based scanners), but the decoded content here is inert and confers no benefit to the publisher.

Malicious versions

1 flagged

0.0.1

Indicators of compromise (SHA-256)

621728ade22e0fd93c65e3c7ca29934f2d1cdb8cdd603fea36da803fa3688c47

68a70ea37beb115e4464b5e9ebaf58986f4cd75434257163f4ddb82f5624ea13

Detection & response playbook

Credential / info stealer

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for hello-world-test-mh2 (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 hello-world-test-mh2 across your stack and pipelines.
If you installed it — respond
hello-world-test-mh2 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.
Did it already run?
If hello-world-test-mh2 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.
How O3 protects you
O3 blocks hello-world-test-mh2 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. hello-world-test-mh2 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

RLMA-2026-05386IN-MAL-2026-013140

References

pypi.org

Credits

Amazon Inspector · finder
ReversingLabs · finder

Detect & block this

O3 blocks hello-world-test-mh2-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

Explore

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