Which versions of xfoofoox are malicious?

The following PyPI versions of xfoofoox are flagged malicious: 0.0.6. Treat any of these as compromised.

How do I remediate xfoofoox if I installed it?

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

If xfoofoox 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 xfoofoox part of a known attack campaign?

Yes — xfoofoox is associated with the 2026-06-anthropy 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 xfoofoox across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for xfoofoox (version 0.0.6).

Malicious package

xfoofooxPyPI

Advisory published Jun 8, 2026Updated Jun 8, 2026

xfoofoox is a confirmed malicious PyPI package (MAL-2026-5340) that steals credentials and exfiltrates sensitive data (malicious version 0.0.6). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in xfoofoox (PyPI)

MAL-2026-5340

Immediate action

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

pip uninstall xfoofoox

What this malware does

During import, the package starts a reverse shell

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

Campaign: 2026-06-anthropy

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

1 flagged

0.0.6

Indicators of compromise (SHA-256)

94e46dfacc8ffb015e2258d96dedda0eebb7118144ace7021794c88b319ade14

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for xfoofoox (version 0.0.6).
If you installed it — respond
xfoofoox 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 xfoofoox 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. xfoofoox on PyPI has been identified as a malicious package (version 0.0.6 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-06-anthropy

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193) · analyst

Detect & block this

O3 blocks xfoofoox-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