Which versions of test-pkg-jie are malicious?

The following PyPI versions of test-pkg-jie are flagged malicious: 1.0.0, 1.1.0, 1.2.0, 1.3.0, 1.4.0. Treat any of these as compromised.

How do I remediate test-pkg-jie if I installed it?

test-pkg-jie 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 test-pkg-jie — how do I know if it already compromised me?

If test-pkg-jie 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 test-pkg-jie part of a known attack campaign?

Yes — test-pkg-jie is associated with the 2026-04-my-package-jiecub3 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 test-pkg-jie across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for test-pkg-jie (5 malicious versions).

Malicious package

test-pkg-jiePyPI

Advisory published Apr 23, 2026Updated Apr 23, 2026

test-pkg-jie is a confirmed malicious PyPI package (MAL-2026-3023) that steals credentials and exfiltrates sensitive data (malicious versions 1.0.0, 1.1.0, 1.2.0…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in test-pkg-jie (PyPI)

MAL-2026-3023

Immediate action

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

pip uninstall test-pkg-jie

What this malware does

During installation, the package attempts to create a reverse shell

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2026-04-my-package-jiecub3

Reasons (based on the campaign):

The package contains code to create a reverse shell, allowing an attacker to execute any commands on the victim's machine.

Malicious versions

5 flagged

1.0.01.1.01.2.01.3.01.4.0

Indicators of compromise (SHA-256)

bc409f90d96c576263a60bd95ab30260b973097425292cdd53999e49cb3c4011

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for test-pkg-jie (5 malicious versions).
If you installed it — respond
test-pkg-jie 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 test-pkg-jie 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. test-pkg-jie on PyPI has been identified as a malicious package (versions 1.0.0, 1.1.0, 1.2.0, 1.3.0, 1.4.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-04-my-package-jiecub3

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193) · analyst

Detect & block this

O3 blocks test-pkg-jie-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