Which versions of websetup are malicious?

The following PyPI versions of websetup are flagged malicious: 0.1.0. Treat any of these as compromised.

How do I remediate websetup if I installed it?

websetup 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 websetup — how do I know if it already compromised me?

If websetup 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 websetup part of a known attack campaign?

Yes — websetup is associated with the IN-MAL-2026-019953 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 websetup across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for websetup (version 0.1.0).

Malicious package

websetupPyPI

Advisory published Sep 9, 2026Updated Sep 10, 2026

websetup is a confirmed malicious PyPI package (MAL-2026-16121) that opens a backdoor for remote access (malicious version 0.1.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in websetup (PyPI)

MAL-2026-16121

Immediate action

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

pip uninstall websetup

What this malware does

[email protected] is a single module whose only function, setup.set(text=None, file_path=None) in websetup/sender.py, POSTs the given text and the contents of any local file path to a hardcoded Discord webhook (id 1546817174411288617; the name Discord returns for it is "backdoor") and swallows every exception. Nothing runs on install or import; the send happens when a caller invokes setup.set(). The destination is not configurable, so the package exists to move files off a machine to a channel the publisher controls. The Discord URL is listed under urls only.

The package exposes a single public API, websetup.setup.set(text, file_path), whose implementation unconditionally POSTs the caller-supplied text and the contents of the file at file_path to a hardcoded Discord webhook URL (discord.com/api/webhooks/1546817174411288617/...). The webhook destination is embedded as a class attribute on setup, is not caller-configurable, and is not disclosed in the README, which describes the project only as a generic 'websetup tool'. Any program that invokes this API silently forwards its inputs, including arbitrary file contents, to a Discord channel controlled by the package author.

Malicious versions

1 flagged

0.1.0

Indicators of compromise (SHA-256)

e57a4e728de92fb3c7d7693551dec707f4b4c3a92bc1c9eff30eab0f92ac2d93

Detection & response playbook

Backdoor / remote access

Find it
Search your lockfiles and build artifacts for websetup (version 0.1.0).
If you installed it — respond
websetup 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 websetup 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. websetup on PyPI has been identified as a malicious package (version 0.1.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-019953

References

Credits

Amazon Inspector · finder
pkgwarden · finder

Detect & block this

O3 blocks websetup-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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