Which versions of web4-py are malicious?

The following PyPI versions of web4-py are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate web4-py if I installed it?

web4-py 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 web4-py — how do I know if it already compromised me?

If web4-py 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 web4-py part of a known attack campaign?

Yes — web4-py is associated with the RLMA-2024-09515, funcaptcha-ru 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 web4-py 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 web4-py (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 web4-py across your stack and pipelines.

Malicious package

web4-pyPyPI

Malicious code in web4-py (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2024-10211

Immediate action

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

pip uninstall web4-py

What this malware does

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

Campaign: funcaptcha-ru

Reasons (based on the campaign):

infostealer

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

3503843cb91a9a55bf1b0b08dcb1c21df23e04a7aeb99f4cafc1fd8dce7b763c

bb6e1048cda686db54a87cd296094c1709e9163c3509380b1ee92d72c8f6c6b6

ee6d9e457367eb3aa5fccd1b80e777030d84e909fb4b00c6a40d994373569be3

96026f609d0fb12d2167c9614fcb685644321aecbf52478b383d2131ced40457

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 web4-py (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 web4-py across your stack and pipelines.
If you installed it — respond
web4-py 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 web4-py 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 web4-py 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. web4-py 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

RLMA-2024-09515funcaptcha-ru

References

Credits

Kamil Mańkowski (kam193)
ReversingLabs · finder

Detect & block this

O3 blocks web4-py-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