Which versions of python-dateitil are malicious?

The following PyPI versions of python-dateitil are flagged malicious: 0.1.2. Treat any of these as compromised.

How do I remediate python-dateitil if I installed it?

python-dateitil establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.

I already installed python-dateitil — how do I know if it already compromised me?

If python-dateitil 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 python-dateitil part of a known attack campaign?

Yes — python-dateitil is associated with the RLMA-2025-04804, 2025-08-python-dateitil, RLUA-2026-00656 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-dateitil across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for python-dateitil (version 0.1.2).

Malicious package

python-dateitilPyPI

Advisory published Aug 27, 2025Updated Mar 19, 2026

python-dateitil is a confirmed malicious PyPI package (MAL-2025-47797) that opens a backdoor for remote access (malicious version 0.1.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in python-dateitil (PyPI)

MAL-2025-47797

Immediate action

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

pip uninstall python-dateitil

What this malware does

Package consist of a revshell only. The effective danger is low as it's clearly designed to connect to a localhost only and be used as awareness.

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: 2025-08-python-dateitil

Reasons (based on the campaign):

typosquatting
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

0.1.2

Indicators of compromise (SHA-256)

b4f5db77eb7b6407fc4bffd35b7d4c4b1bfbdc3fdf7b7bc155ecfaaab693e73b

07e335e1dfcc04360bbc65bfec95429d985ae8989aacd22b9bbffdde8c1ab3eb

f7d09226c2d76a03909b10c844a44149abf2606a5f1f55232ee7620580835787

29db1111a20ffcd79894d736ead141458777c1d9aa591e744f02bc11eef64a98

Detection & response playbook

Backdoor / remote access

Find it
Search your lockfiles and build artifacts for python-dateitil (version 0.1.2).
If you installed it — respond
python-dateitil establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.
Did it already run?
If python-dateitil 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. python-dateitil on PyPI has been identified as a malicious package (version 0.1.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-048042025-08-python-dateitilRLUA-2026-00656

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193)
ReversingLabs · finder

Detect & block this

O3 blocks python-dateitil-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

Malware detection Runtime egress monitoring

Explore

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