registry / Credential exfiltration / @ornikar/eslint-config-babel
@ornikar/eslint-config-babel
eslint babel config files
This report shows the evidence for @ornikar/eslint-config-babel@24.0.3, the only known version.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThe preinstall chain is unrelated to an ESLint config and concretely executes an obfuscated credential-focused remote-code payload. This is malicious install-time behavior.
Static reason
One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review
Trigger
npm preinstall
Impact
Remote code execution and credential exfiltration from the installing environment.
Mechanism
downloads/runs a payload that evaluates fetched code and harvests credentials
Attack narrative
npm preinstall launches setup.mjs, which obtains Bun if absent and executes the bundled obfuscated math_init.js. That payload automatically runs, contains a fetch-response eval path, and enumerates token-bearing credential sources including GitHub tokens, enabling unconsented remote execution and theft during dependency installation.
AI rationale
The preinstall chain is unrelated to an ESLint config and concretely executes an obfuscated credential-focused remote-code payload. This is malicious install-time behavior.
Evidence
package.jsonsetup.mjsmath_init.js
Network endpoints1
github.com/oven-sh/bun/releases/download/bun-v1.3.13/
Decision evidence
public snapshotAI called this Malicious at 99.0% confidence as Malware with low false-positive risk.
Evidence for block
- package.json runs `node setup.mjs` as preinstall.
- setup.mjs downloads Bun from github.com and executes math_init.js during install.
- math_init.js is a 728KB obfuscated payload that starts automatically.
- math_init.js fetches remote content and passes a response body to eval.
- math_init.js enumerates token-bearing sources, including GitHub tokens.
Evidence against
- index.js is a conventional ESLint configuration.
Behavioral surface
ChildProcessEvalFilesystemNetworkShell
HighEntropyStringsMinifiedUrlStrings
Source & flagged code
3 flagged · loading sourcepackage.jsonView file
•scripts.preinstall = node setup.mjs
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkgmath_init.jsView file
1// @bun @bun-cjs
L2: var MmgoCP,etDiOOB,JqTtnbZ,bc3Kak,ZQmUTyQ,TTUgga,MDX6yrw,h8wMJNB,CabwE2L,x5ErqV;function WV8StW(MmgoCP,etDiOOB,JqTtnbZ){for(JqTtnbZ=0x0;JqTtnbZ<etDiOOB;JqTtnbZ++)MmgoCP.push(MmgoCP...
Low
Eval
Package source references a known benign dynamic code generation pattern.
math_init.jsView on unpkg · L1setup.mjsView file
•matchType = normalized_sha256
matchedPackage = @ornikar/storybook-config@12.1.2
matchedPath = setup.mjs
matchedIdentity = npm:[redacted]:12.1.2
similarity = 1.000
summary = normalized source hash matched finalized malicious source
Findings
2 High2 Medium5 Low
HighInstall Time Lifecycle Scriptspackage.json
HighKnown Malware Source Similaritysetup.mjs
MediumNetwork
MediumStructural Risk Force Deep Review
LowScripts Present
LowEvalmath_init.js
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to @ornikar/eslint-config-babel@24.0.3.
The versions list below shows the verdict for each recorded version.
- Avoid installing @ornikar/eslint-config-babel@24.0.3. 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.