Which versions of hello-bat-fwi9 are malicious?

The following PyPI versions of hello-bat-fwi9 are flagged malicious: 0.1.0, 0.1.1. Treat any of these as compromised.

How do I remediate hello-bat-fwi9 if I installed it?

hello-bat-fwi9 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-bat-fwi9 — how do I know if it already compromised me?

If hello-bat-fwi9 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 hello-bat-fwi9 part of a known attack campaign?

Yes — hello-bat-fwi9 is associated with the 2026-11-hello-bat-fwi9 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-bat-fwi9 across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for hello-bat-fwi9 (2 malicious versions).

Malicious package

hello-bat-fwi9PyPI

Advisory published Nov 6, 2026Updated Nov 6, 2026

hello-bat-fwi9 is a confirmed malicious PyPI package (MAL-2026-18735) that steals credentials and exfiltrates sensitive data (malicious versions 0.1.0, 0.1.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in hello-bat-fwi9 (PyPI)

MAL-2026-18735

Immediate action

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

pip uninstall hello-bat-fwi9

What this malware does

The package delivers an obfuscated .bat file delivering a RAT, with the help of its own Python runtime and PTH files. The code requires manually triggering the malicious action. This is most likely a continuation of the campaign 2026-11-filipt.

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

Campaign: 2026-11-hello-bat-fwi9

Reasons (based on the campaign):

obfuscation
rat
abuses-pth
malware

Malicious versions

2 flagged

0.1.00.1.1

Indicators of compromise (SHA-256)

915b488501776e1dc1f9c551e0a52310fc6daa8a299b0638f6d5d7f615d1ad8b

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for hello-bat-fwi9 (2 malicious versions).
If you installed it — respond
hello-bat-fwi9 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-bat-fwi9 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. hello-bat-fwi9 on PyPI has been identified as a malicious package (versions 0.1.0, 0.1.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-11-hello-bat-fwi9

References

Credits

Kamil Mańkowski (kam193) · reporter

Detect & block this

O3 blocks hello-bat-fwi9-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