registry / Credential exfiltration / @arv-bedrock/auth-admin
@arv-bedrock/auth-admin
SDK for authentication of bedrock services
This report shows the evidence for @arv-bedrock/auth-admin@1.0.3. 2 of 2 known versions are blocked or flagged. See all versions.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThe preinstall chain is unrelated to the advertised SDK and executes an obfuscated, remotely extensible credential-harvesting payload without user consent.
Static reason
One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review
Trigger
npm package installation (preinstall)
Impact
Arbitrary code execution and theft of npm/GitHub credentials during installation.
Mechanism
install-time staged payload execution with remote eval and credential harvesting
Attack narrative
Installing the package runs setup.mjs, which obtains a Bun executable and uses it to execute the obfuscated math_init.js payload. The payload includes remote-response eval and token-collection paths, enabling an attacker to alter behavior remotely and exfiltrate developer credentials during installation.
AI rationale
The preinstall chain is unrelated to the advertised SDK and executes an obfuscated, remotely extensible credential-harvesting payload without user consent.
Evidence
package.jsonsetup.mjsmath_init.jslib/cjs/auth.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 invokes setup.mjs during preinstall.
- setup.mjs downloads Bun from github.com and executes math_init.js at install time.
- math_init.js is heavily obfuscated and dynamically evaluates fetched response content.
- math_init.js contains credential-token handling, including npm and GitHub token paths.
- The installed SDK is small; the unrelated hidden installer payload dominates risk.
Evidence against
- lib/cjs/auth.js implements the advertised, user-invoked authentication API.
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/react-native-svg-transformer@1.0.11
matchedPath = setup.mjs
matchedIdentity = npm:[redacted]:1.0.11
similarity = 1.000
summary = normalized source hash matched finalized malicious source
High
Known Malware Source Similarity
Source file is highly similar to a previously finalized malicious package; route for source-aware review.
setup.mjsView on unpkgFindings
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 @arv-bedrock/auth-admin@1.0.3.
The versions list below shows the verdict for each recorded version.
- Avoid installing @arv-bedrock/auth-admin@1.0.3. 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: .
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