Which versions of newpackagetest2026 are malicious?

The following PyPI versions of newpackagetest2026 are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate newpackagetest2026 if I installed it?

newpackagetest2026 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 newpackagetest2026 — how do I know if it already compromised me?

If newpackagetest2026 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 newpackagetest2026 part of a known attack campaign?

Yes — newpackagetest2026 is associated with the 2023-12-valuent 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 newpackagetest2026 across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for newpackagetest2026 (version 1.0.0).

Part of a larger attack: 2023-12-valuent published 17 malicious packages. See the full campaign →

Malicious package

newpackagetest2026PyPI

Advisory published Dec 25, 2023Updated Dec 12, 2025

newpackagetest2026 is a confirmed malicious PyPI package (MAL-2023-8766) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in newpackagetest2026 (PyPI)

MAL-2023-8766

Immediate action

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

pip uninstall newpackagetest2026

What this malware does

Packages either test the malicious behaviour, or actually download and run a simple remote script during the installation.

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: 2023-12-valuent

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.
Downloads and executes a remote malicious script.

The OpenSSF Package Analysis project identified 'newpackagetest2026' @ 1.0.0 (pypi) as malicious.

It is considered malicious because:

The package communicates with a domain associated with malicious activity.
The package executes one or more commands associated with malicious behavior.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

b59246598399045032deadbe2bf6452d46257c97603eec69d11630fcd06cf2da

b2911447f242d2f2746d6745b7d608aba2fa09801fad358ccfb156ef2d877b95

7b2facdf5925f09b064136d0c919a80e0e83d0a13b4b6f9d903162352c586dc9

c890f0687897904950c15e291805e895ae761d85431c4a20b30599558474f85d

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for newpackagetest2026 (version 1.0.0).
If you installed it — respond
newpackagetest2026 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 newpackagetest2026 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. newpackagetest2026 on PyPI has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2023-12-valuent

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193)
OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks newpackagetest2026-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

All malware advisories How O3 detects malware Vulnerability database