Which versions of aliyun-oss2 are malicious?

Every published version of aliyun-oss2 on PyPI is considered malicious. Remove the package entirely.

How do I remediate aliyun-oss2 if I installed it?

aliyun-oss2 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 aliyun-oss2 — how do I know if it already compromised me?

If aliyun-oss2 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.

How do I find aliyun-oss2 across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for aliyun-oss2 (all published versions).

Malicious package

aliyun-oss2PyPI

aliyun-oss2 is a confirmed malicious PyPI package (MAL-2023-8356) that steals credentials and exfiltrates sensitive data. Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in aliyun-oss2 (PyPI)

MAL-2023-8356

Immediate action

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

pip uninstall aliyun-oss2

What this malware does

Malicious Typosquatting packages campaign targeting developers, steals cloud service credentials

Attack targeted at users of Alibaba, AWS and Telegram via malicious packages published to PyPI.

The malicious code was hidden in strategicly chosen functions and would only trigger when these functions were called. The malicious code does not automatically run on install or import, helping the packages evade detection.

Malicious versions

all versions

Every published version of this package is considered malicious — remove it entirely.

Indicators of compromise (SHA-256)

a47b0bcf41b0d36b78b3429f9f22415630b3870da18554d21c2123212bc992f4

8c33f6b28da216b43120a3b8a8537d0263dc1eb2b22979a4183b371ff57b9e0b

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for aliyun-oss2 (all published versions).
If you installed it — respond
aliyun-oss2 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 aliyun-oss2 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. aliyun-oss2 on PyPI has been identified as a malicious package (all published versions flagged). It should be removed immediately — do not install or keep it in your dependency tree.

References

Credits

Checkmarx · finder

Detect & block this

O3 blocks aliyun-oss2-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