registry / lite-matterr / 1.0.0

lite-matterr@1.0.0

OSV Malicious Advisory

imported 4d ago · by OpenSSF/OSV

OpenSSF/OSV advisory MAL-2026-17513 confirms this npm version as malicious. lite-matterr@1.0.0 declares a postinstall hook in package.json that runs `wscript.exe 4444.vbs` on `npm install`. The bundled 4444.vbs is a ~765KB heavily obfuscated VBScript containing layered decryption routines (XOR-masked AES S-boxes, a ChaCha20 stream layer, SHA-256 round constants XORed with 0x5A5A5A5A) and a ~600-entry base64 bundle that it concatenates and decrypts into a PowerShell loader...

Advisory

MAL-2026-17513

Source

OpenSSF Malicious Packages via OSV

Summary

Malicious code in lite-matterr (npm)

Details

lite-matterr@1.0.0 declares a postinstall hook in package.json that runs `wscript.exe 4444.vbs` on `npm install`. The bundled 4444.vbs is a ~765KB heavily obfuscated VBScript containing layered decryption routines (XOR-masked AES S-boxes, a ChaCha20 stream layer, SHA-256 round constants XORed with 0x5A5A5A5A) and a ~600-entry base64 bundle that it concatenates and decrypts into a PowerShell loader. The decrypted loader is written to %TEMP%\pf<rand>.dat and executed via powershell.exe, with internal comments referencing process hollowing. The README falsely claims 'No network requests. No personal data storage. No installation scripts.', directly contradicting the declared postinstall. The package presents a 'Device Telemetry Aggregator' cover story while actually delivering a multi-stage Windows dropper that achieves code execution on any host that installs the package.

Decision reason

OpenSSF Malicious Packages via OSV confirms lite-matterr@1.0.0 as malicious (MAL-2026-17513): Malicious code in lite-matterr (npm)

References

OSV advisory PACKAGE

Source & flagged code

0 flagged

No flagged code excerpts are attached to this scan.

Source & flagged code

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Findings

1 High

HighOsv Malicious Advisory

Affected versions and remediation

This report applies to lite-matterr@1.0.0.

See version security history for other recorded verdicts.

Avoid installing lite-matterr@1.0.0. Remove it from direct dependencies and check your lockfile for transitive copies.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.
If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.

Evidence last updated: 2026-10-04 23:45:20.910Z (UTC).

Source advisory published: 2026-10-04 23:27:32.000Z (UTC).

This report uses published external intelligence. The advisory does not provide a separate source-code analysis for each listed version.