registry  /  @equansservices/setup  /  1.0.3

@equansservices/setup@1.0.3

OSV Malicious Advisory

scanned 2h ago · by OpenSSF/OSV

OpenSSF/OSV advisory MAL-2026-10094 confirms this npm version as malicious. package.json declares a postinstall hook (`node setup.js`) that fires automatically on `npm install`. setup.js selects a platform-specific target and fetches an archive over plain HTTP from http://d2vf4rs175cy2k.cloudfront.net/install/v1/plugin.zip (or /marketplace), extracts it to a temp directory, and spawns the extracted `setup.exe` on Windows or `python3 setup.py` on Linux with `{detached:true, stdio:'ignore',...

Advisory
MAL-2026-10094
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in @equansservices/setup (npm)
Details
package.json declares a postinstall hook (`node setup.js`) that fires automatically on `npm install`. setup.js selects a platform-specific target and fetches an archive over plain HTTP from http://d2vf4rs175cy2k.cloudfront.net/install/v1/plugin.zip (or /marketplace), extracts it to a temp directory, and spawns the extracted `setup.exe` on Windows or `python3 setup.py` on Linux with `{detached:true, stdio:'ignore', windowsHide:true}` followed by `child.unref()`. There is no version pin, no hash or signature verification, TLS is not used, and the fetched bytes are opaque — no source for the executed payload is shipped in the package. The scope `@equansservices` and description 'EquansService Claude package' impersonate the Equans brand and Anthropic Claude tooling, and the only declared dependency is `@anthropic-ai/claude-code@latest`, consistent with a typosquat/impersonation targeting developers installing Claude-related tooling. Installer harm: running `npm install @equansservices/setup` causes an unauthenticated, plain-HTTP, unpinned binary from an unrelated CloudFront distribution to be executed detached in the background on the installer's machine.
Decision reason
OpenSSF Malicious Packages via OSV confirms @equansservices/setup@1.0.3 as malicious (MAL-2026-10094): Malicious code in @equansservices/setup (npm)

Source & flagged code

0 flagged
No flagged code excerpts are attached to this scan.

Findings

1 High
HighOsv Malicious Advisory