Which versions of krbutils are malicious?

The following PyPI versions of krbutils are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate krbutils if I installed it?

krbutils is a typosquat — you almost certainly intended a legitimately-named package. Remove krbutils, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.

I already installed krbutils — how do I know if it already compromised me?

If krbutils 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 krbutils part of a known attack campaign?

Yes — krbutils is associated with the GENERIC-local-typosquatting 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 krbutils 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 krbutils (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging krbutils across your stack and pipelines.

Malicious package

krbutilsPyPI

Malicious code in krbutils (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2026-863

Immediate action

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

pip uninstall krbutils

What this malware does

Package is a typosquatting or dependency confusion attempt with a low-harm local-only action, like leaving a flag file.

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-local-typosquatting

Reasons (based on the campaign):

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

The OpenSSF Package Analysis project identified 'krbutils' @ 1.0.0 (pypi) as malicious.

It is considered malicious because:

The package executes one or more commands associated with malicious behavior.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

ef5a16574ecd987f57925735cdbeb06062b47dc13fda6c1f30a68e9aba9571ad

c0f412fad7f706349e43d478e81c92945192f9e812e50d5dcdac93f50fb809ef

Detection & response playbook

Typosquat

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for krbutils (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging krbutils across your stack and pipelines.
If you installed it — respond
krbutils is a typosquat — you almost certainly intended a legitimately-named package. Remove krbutils, install the correct package, and rotate any secrets exposed during the install since post-install scripts may have already run.
Did it already run?
If krbutils 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 krbutils 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. krbutils on PyPI has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

GENERIC-local-typosquatting

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193) · reporter
OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks krbutils-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Malware detection Runtime egress monitoring