Which versions of thief-utils are malicious?

The following PyPI versions of thief-utils are flagged malicious: 1.2.6, 1.2.7. Treat any of these as compromised.

How do I remediate thief-utils if I installed it?

thief-utils 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 thief-utils — how do I know if it already compromised me?

If thief-utils 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 thief-utils part of a known attack campaign?

Yes — thief-utils is associated with the 2026-03-thief-utils, RLMA-2026-01688 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 thief-utils 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 thief-utils (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging thief-utils across your stack and pipelines.

Malicious package

thief-utilsPyPI

Malicious code in thief-utils (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2026-1407

Immediate action

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

pip uninstall thief-utils

What this malware does

During installation, package attempts to exfiltrate cloud credentials and sensitive env variables

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

Campaign: 2026-03-thief-utils

Reasons (based on the campaign):

exfiltration-cloud-tokens
exfiltration-generic
exfiltration-env-variables

Malicious versions

2 flagged

1.2.61.2.7

Indicators of compromise (SHA-256)

bcebc8919f53e78dae4adb16168fdd37abea93d969d3411b948ed1781c6faf28

e0a474d2649c9ba53bc5f3a9f3992d78a249d77a356aa33c9d75e47a9d84fdee

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 thief-utils (2 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging thief-utils across your stack and pipelines.
If you installed it — respond
thief-utils 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 thief-utils 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 thief-utils 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. thief-utils on PyPI has been identified as a malicious package (versions 1.2.6, 1.2.7 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-03-thief-utilsRLMA-2026-01688

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193) · analyst
ReversingLabs · finder

Detect & block this

O3 blocks thief-utils-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