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

byte-flux-3822a6dd00d6414daba3ae0de3930a5aPyPI

Advisory published Updated

byte-flux-3822a6dd00d6414daba3ae0de3930a5a is a confirmed malicious PyPI package (MAL-2024-11542) that steals credentials and exfiltrates sensitive data (malicious version 9.6). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in byte-flux-3822a6dd00d6414daba3ae0de3930a5a (PyPI)

MAL-2024-11542
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall byte-flux-3822a6dd00d6414daba3ae0de3930a5a

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

Malicious versions

1 flagged
9.6

Indicators of compromise (SHA-256)

654071e046a5b7fdecba02c3c3cbf5c243a254e7abf1143e45c9c17f80f0eb73
44fd67da3ee2aa348e3b96c12b6553757a92ae0f983277fdc3f2774e50a1d47c
cec00e10a19e19684fc4887fa09aa1025aafc00f1121baacdf55f0c3b2ba9aec
142d085cd73df118d9050b8f9c746d57b723a71a4389ac8ea2106d14bb0fa50d
4624ebd7892fdf31f5b4f5815b036152b33868b069cc6829790a99ae11612ca3

Detection & response playbook

Credential / info stealer

  1. Find it

    Search your lockfiles and build artifacts for byte-flux-3822a6dd00d6414daba3ae0de3930a5a (version 9.6).

  2. If you installed it — respond

    byte-flux-3822a6dd00d6414daba3ae0de3930a5a 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.

  3. Did it already run?

    If byte-flux-3822a6dd00d6414daba3ae0de3930a5a 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. byte-flux-3822a6dd00d6414daba3ae0de3930a5a on PyPI has been identified as a malicious package (version 9.6 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2024-109882024-11-byted-dastRLUA-2026-00163

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

O3 blocks byte-flux-3822a6dd00d6414daba3ae0de3930a5a-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
byte-flux-3822a6dd00d6414daba3ae0de3930a5a (PyPI) malicious package — MAL-2024-11542 | O3 Security