Which versions of python-dateutil-malicious are malicious?

The following PyPI versions of python-dateutil-malicious are flagged malicious: 2.5.4. Treat any of these as compromised.

How do I remediate python-dateutil-malicious if I installed it?

python-dateutil-malicious 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 python-dateutil-malicious — how do I know if it already compromised me?

If python-dateutil-malicious was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

Is python-dateutil-malicious part of a known attack campaign?

Yes — python-dateutil-malicious is associated with the RLMA-2025-01991, GENERIC-standard-pypi-install-pentest, RLUA-2026-00658 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 python-dateutil-malicious across my projects, lockfiles, and CI pipelines?

Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for python-dateutil-malicious (version 2.5.4). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging python-dateutil-malicious across your stack and pipelines.

Malicious package

python-dateutil-maliciousPyPI

Malicious code in python-dateutil-malicious (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2025-2992

Immediate action

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

pip uninstall python-dateutil-malicious

What this malware does

Installing the package or importing the module exfiltrates basic information about the host, and the package has no other purpose.

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: GENERIC-standard-pypi-install-pentest

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.
The package overrides the install command in setup.py to execute malicious code during installation.

Malicious versions

1 flagged

2.5.4

Indicators of compromise (SHA-256)

5ef34d8271e85de3f59ecc76a218287ba3172334c3e0dcbb5401854e9af9155b

1b5dd07344bc2beb16dcbefe636c3e52675ab365aa56abc386982ae4087ac5dc

e746200736f98b51154e3cfbafa826ee92b8badb2005dac0e8fb4765cc3cbc57

7f8dd5658c27181f675637394c5515c28f9e89d7faac160a6a05dbce2eb18edc

be45cc983b1407025eac95ddb9bebfa9a2a2fb3faa41fd9ca2351ec7c52af1c2

Detection & response playbook

Credential / info stealer

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for python-dateutil-malicious (version 2.5.4). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging python-dateutil-malicious across your stack and pipelines.
If you installed it — respond
python-dateutil-malicious 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 python-dateutil-malicious was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks python-dateutil-malicious before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. python-dateutil-malicious on PyPI has been identified as a malicious package (version 2.5.4 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-01991GENERIC-standard-pypi-install-pentestRLUA-2026-00658

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193)
ReversingLabs · finder

Detect & block this

O3 blocks python-dateutil-malicious-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