Which versions of openfermionpyscanf are malicious?

The following PyPI versions of openfermionpyscanf are flagged malicious: 94.6. Treat any of these as compromised.

How do I remediate openfermionpyscanf if I installed it?

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

If openfermionpyscanf 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 openfermionpyscanf part of a known attack campaign?

Yes — openfermionpyscanf is associated with the 2024-11-byted-dast 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 openfermionpyscanf across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for openfermionpyscanf (version 94.6).

Part of a larger attack: 2024-11-byted-dast published 183 malicious packages. See the full campaign →

Malicious package

openfermionpyscanfPyPI

Advisory published Nov 6, 2024Updated Dec 12, 2025

openfermionpyscanf is a confirmed malicious PyPI package (MAL-2024-10644) that steals credentials and exfiltrates sensitive data (malicious version 94.6). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in openfermionpyscanf (PyPI)

MAL-2024-10644

Immediate action

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

pip uninstall openfermionpyscanf

What this malware does

A campaign of probably pentest packages flooding PYPI. Installing the package or importing the module triggers reporting basic info like hostname, path and the username to the package author. There is no other purpose of the package.

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: 2024-11-byted-dast

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.
typosquatting
dependency-confusion

The OpenSSF Package Analysis project identified 'openfermionpyscanf' @ 94.6 (pypi) as malicious.

It is considered malicious because:

The package communicates with a domain associated with malicious activity.

Malicious versions

1 flagged

94.6

Indicators of compromise (SHA-256)

58421116f77a091f8d0bc6d920d9bac7ce52b690d1adf5a6174ef4f665bafacd

e4c263f671879a1ea4b843b5d50527a9bb40fe5ef1ab345e8bb9570c17601d4d

eb5fef6cf1c79b7e945198aa689490c004a9b1c400642cece5597b6b7b02bf71

3df08334d25b5b1e4a22869dc7ed697d202cc4e334a823d8797d2434867c4abf

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for openfermionpyscanf (version 94.6).
If you installed it — respond
openfermionpyscanf 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 openfermionpyscanf 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. openfermionpyscanf on PyPI has been identified as a malicious package (version 94.6 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2024-11-byted-dast

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193)
OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks openfermionpyscanf-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