Malicious code in nebulallm (PyPI)

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Source: amazon-inspector (5428d0f2f07674817697574b1993211dfa902bad746d8cd6efc1ad6b1fbbfd90)

nebulallm 1.4.3 presents itself as an AI API client stub but ships a custom install command class in setup.py that executes on pip install. The install hook spawns regsvr32.exe with the squiblydoo LOLBin pattern (regsvr32 -s -i:<url> scrobj.dll) to fetch and execute a remote COM scriptlet from https://akinomoreno.pythonanywhere.com/faye on the installer's Windows host. The subprocess is launched with DETACHED_PROCESS and stdin/stdout/stderr redirected to DEVNULL, so the dropper runs silently and produces no output during pip install. The declared package functionality is unrelated to the install-time behavior, consistent with a dropper staged behind a cover-story package.

Source: kam193 (50e0ed125f08fd7743ccfb40590c24304b4731f6a99b69bc553b5bb8b7e57fc6)

During installation package first downloads a JScript script, which then downloads the next malicious DLL.

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

Campaign: 2026-10-nebulallm

Reasons (based on the campaign):

• typosquatting

• The package overrides the install command in setup.py to execute malicious code during installation.

• Downloads and executes a remote executable.

• Downloads and executes a remote malicious script.

• malware