create-mono-package
This report shows the evidence for create-mono-package@0.0.0, the only known version.
OpenSSF/OSV Malicious Advisory
imported 4mo ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-6222 confirms this npm version as malicious.
Advisory
MAL-2026-6222
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in create-mono-package (npm)
Details
The package's postinstall hook (.prepare.cjs) collects host fingerprint data (os.hostname(), os.userInfo().username, platform/arch, all non-internal network interface IPs, npm registry) plus a full dump of process.env (only keys prefixed with `npm_lifecycle` are filtered out) and HTTPS-POSTs the JSON payload to open.larksuite.com. Both the destination host and URL path are obfuscated: the hostname is built from a reversed charcode array with a -7 offset (`_hostDecoder`), and the path is XOR-decoded against key `Zk9x` (`_pathDecoder`). The send is wrapped in extensive sandbox/honeypot evasion — the script silently `process.exit(0)`s when env keys match analysis-pipeline prefixes (SANDYCLAW_, OPENCLAW_, PERMISO_, CHAINRADAR_, PYPI_POISON_, ASPECT_TLOG, THREAT_ANALYZER_MODEL) or when hostname/username matches patterns like detonat/cuckoo/virus/scan, and dummy values for GITHUB_TOKEN/NPM_TOKEN/AWS_ACCESS_KEY_ID/AWS_SECRET_ACCESS_KEY are explicitly skipped to avoid honeypots. On a real developer or CI machine, `npm install create-mono-package` ships every credential present in the environment (GitHub PATs, npm publish tokens, AWS keys, CI secrets, DB URIs) to the attacker-controlled Lark endpoint.
References
Source & flagged code
0 flagged · loading sourceNo flagged code excerpts are attached to this scan.
Findings
1 High
HighOsv Malicious Advisory
Affected versions and remediation
This report applies to create-mono-package@0.0.0.
The versions list below shows the verdict for each recorded version.
- Avoid installing create-mono-package@0.0.0. 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: .
Source advisory published: .
This report uses published external intelligence. The advisory does not provide a separate source-code analysis for each listed version.
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