registry / Credential exfiltration / @ornikar/babel-preset-react
@ornikar/babel-preset-react
This report shows the evidence for @ornikar/babel-preset-react@6.1.13, the only known version.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThis behavior is unrelated to a Babel preset and is activated automatically at install time. The clear launcher-to-obfuscated-payload chain establishes concrete malicious behavior.
Static reason
One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review
Trigger
npm preinstall
Impact
Credential exfiltration and arbitrary code execution during dependency installation.
Mechanism
installer-launched credential-harvesting remote-code payload
Attack narrative
The preinstall hook launches setup.mjs, which executes the bundled obfuscated math_init.js through Bun, downloading Bun when needed. The payload includes credential-source discovery, GitHub-token handling, outbound request construction, and eval of fetched content, creating an unconsented install-time exfiltration and remote-code-execution chain.
AI rationale
This behavior is unrelated to a Babel preset and is activated automatically at install time. The clear launcher-to-obfuscated-payload chain establishes concrete malicious behavior.
Evidence
package.jsonsetup.mjsmath_init.js/etc/os-release
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` at preinstall.
- setup.mjs executes math_init.js with Bun, downloading Bun from GitHub if absent.
- math_init.js is a 728 KB obfuscated payload with an immediate async entrypoint.
- math_init.js discovers credential sources including GitHub tokens.
- math_init.js sends collected data and dynamically evals remotely fetched content.
Evidence against
- index.js is a conventional Babel preset wrapper.
- The Bun download endpoint in setup.mjs is GitHub's official oven-sh release URL.
Behavioral surface
ChildProcessEvalFilesystemNetworkShell
HighEntropyStringsMinifiedUrlStrings
Source & flagged code
4 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 = native-frontend-orb@1.1.16
matchedPath = setup.mjs
matchedIdentity = npm:bmF0aXZlLWZyb250ZW5kLW9yYg:1.1.16
similarity = 1.000
summary = normalized source hash matched finalized malicious source
Findings
3 High2 Medium5 Low
HighInstall Time Lifecycle Scriptspackage.json
HighKnown Malware Source Similaritysetup.mjs
HighKnown Malware Source Fingerprint Signaturesetup.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/babel-preset-react@6.1.13.
The versions list below shows the verdict for each recorded version.
- Avoid installing @ornikar/babel-preset-react@6.1.13. 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.