Which versions of hexdec are malicious?

The following PyPI versions of hexdec are flagged malicious: 0.0.1. Treat any of these as compromised.

How do I remediate hexdec if I installed it?

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

If hexdec 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 hexdec part of a known attack campaign?

Yes — hexdec is associated with the RLMA-2025-05598, 2025-04-tronix, RLUA-2026-00389 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 hexdec across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for hexdec (version 0.0.1).

Part of a larger attack: 2025-04-tronix published 67 malicious packages. See the full campaign →

Malicious package

hexdecPyPI

Advisory published Oct 10, 2025Updated Mar 19, 2026

hexdec is a confirmed malicious PyPI package (MAL-2025-191629) that steals credentials and exfiltrates sensitive data (malicious version 0.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in hexdec (PyPI)

MAL-2025-191629

Immediate action

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

pip uninstall hexdec

What this malware does

Package appears to be designed for private key exfiltration, but no known usage. The name appears to be related to the cryptocurrency TRX (Tron / Tronix). Some packages additionally clone the readme of other, legit libraries. The similar packages are repeating uploaded to PyPI

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

Campaign: 2025-04-tronix

Reasons (based on the campaign):

exfiltration-generic
crypto-related

Malicious versions

1 flagged

0.0.1

Indicators of compromise (SHA-256)

d41993213ac2cf02f89474c549705d4876f7a2d22df79169b01ff1929f2066b3

25805398a6ec40a078afc03c1bb44ea7bfb3cbc2fd51d723d58ee955b1586992

b35c77c73cb594ed27985ac5e797ed54657a3301e976728e8fdf06dedb94e085

cc55d51f64b873d1a89725dca0bd785aa589f30239cd9c8149b9513be2a340f3

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for hexdec (version 0.0.1).
If you installed it — respond
hexdec 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 hexdec 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. hexdec on PyPI has been identified as a malicious package (version 0.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-055982025-04-tronixRLUA-2026-00389

References

Credits

Kamil Mańkowski (kam193)
ReversingLabs · finder

Detect & block this

O3 blocks hexdec-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

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