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Npm typosquatting campaign distributing WinOS 4.0 implant

Campaign
First reported
Last updated
Happening score
H score 20
1 unique sources, 1 articles

Summary

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A npm typosquatting campaign distributing the WinOS 4.0 implant overlapped with malicious repository activity, indicating a broader coordinated distribution effort beyond one source. Researchers also found the same malicious loader infrastructure in other repositories, which raises the risk of repeated abuse across multiple packages. The overlap expands concern from a single malicious repo to a wider delivery operation.

Related Happenings

Miasma self-replicating supply chain attack campaign targeting open-source repositories

Campaign
H score83 First: 06.06.2026 09:58 Last: 06.06.2026 09:58 Sources 1

About this happening: The Miasma self-replicating supply-chain campaign has reached 73 Microsoft repositories across Azure, Azure-Samples, Microsoft, and MicrosoftDocs on GitH...

Open Happening

Shai-Hulud supply-chain campaign spreading via stolen CI/CD credentials

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H score56 First: 12.05.2026 14:29 Last: 12.05.2026 14:29 Sources 1

About this happening: GitHub said it removed more than 500 compromised npm packages in September 2025 and moved to harden publishing after early Shai-Hulud activity. In May 2026, researcher...

Open Happening

Mini Shai-Hulud npm supply-chain malware wave

Malware Activity
H score68 First: 12.05.2026 14:07 Last: 12.05.2026 14:07 Sources 1

About this happening: The Mini Shai-Hulud npm malware activity now includes the Miasma variant affecting Microsoft GitHub repositories in a self-replicating supply-chain campaign. O...

Latest development: 09.06.2026 18:42

On June 5, Microsoft removed 73 repositories across its Azure, microsoft, Azure-Samples, and MicrosoftDocs organizations on GitHub after concerns about potential malicious content tied to the Miasma/Shai-Hulud supply-chain campaign. The action disrupted continuous integration pipelines and broke workflows that depended on Azure/functions-action, while Microsoft said it temporarily removed some repositories during its investigation.

Open Happening

Hugging Face shared-loader supply chain campaign

Campaign
H score79 First: 11.05.2026 10:05 Last: 11.05.2026 10:05 Sources 1

About this happening: A Hugging Face repository cluster appears to be part of a broader supply chain campaign that used shared loaders to push a stealer through open-source model downloads....

Open Happening

Mini Shai-Hulud SAP-related npm supply-chain campaign

Campaign
H score45 First: 29.04.2026 19:26 Last: 29.04.2026 19:26 Sources 1

About this happening: A new Mini Shai-Hulud supply-chain campaign is targeting SAP-related npm packages, putting developer and CI/CD environments at risk of credential theft and malicious p...

Latest development: 12.05.2026 11:50

Mini Shai-Hulud expands beyond the original SAP-related npm packages to compromise TanStack, UiPath, Mistral AI, OpenSearch, Guardrails AI, and DraftLab packages across npm and PyPI, with malicious payloads using router_init.js, GitHub Actions abuse, and exfiltration to filev2.getsession[.]org, api.masscan[.]cloud, or attacker-controlled GitHub repositories.

Open Happening

Timeline

  1. 09.05.2026 17:26 2 articles · 2mo ago

    WinOS 4.0 npm typosquatting overlap identified

    Campaign Scope Update

    HiddenLayer researchers noticed overlap between a malicious repository campaign and an npm typosquatting operation distributing the WinOS 4.0 implant, broadening concern beyond a single package and indicating a wider delivery effort.

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