registry / Credential exfiltration / crazynut
crazynut
Republished package
This report shows the evidence for crazynut@2.0.0. 2 of 2 known versions are blocked or flagged. See all versions.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiDirect source inspection confirms automatic remote code loading and a browser proxy/service-worker stack that handles routed requests and cookies. There is no npm lifecycle execution, but the concrete runtime attack surface warrants blocking this package artifact.
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
A user opens or serves `index.html` in a browser.
Impact
The remote `c.vipersfutbol.com` script runs with the page's origin privileges; the embedded proxy stack can process routed browser traffic and cookie state.
Mechanism
Remote script execution plus browser request/cookie interception.
Attack narrative
The package is presented as an npm artifact but its `main` is a browser page. On page load it executes a script from an unrelated third-party domain and loads local Scramjet proxy code. The bundled service-worker/controller path claims clients, conditionally intercepts fetches, and passes request URLs, headers, bodies, and cookie updates through its RPC layer. This establishes a concrete runtime web-control surface whose remote script can be changed outside the package, although there is no install-time execution.
AI rationale
Direct source inspection confirms automatic remote code loading and a browser proxy/service-worker stack that handles routed requests and cookies. There is no npm lifecycle execution, but the concrete runtime attack surface warrants blocking this package artifact.
Evidence
index.htmlbfjdx/757lr8.jsct1tl/pap3do.jsct1tl/csbzam.jsct1tl/jmqwjq.jsj6k3y8.jspackage.json
Network endpoints2
c.vipersfutbol.com/script.jswww.googletagmanager.com/gtag/js?id=G-0VL3ZSBXDH
Decision evidence
public snapshotAI called this Malicious at 90.0% confidence as Malware with low false-positive risk.
Evidence for block
- `index.html` executes `https://c.vipersfutbol.com/script.js` automatically when opened.
- `index.html` loads opaque `bfjdx/757lr8.js` and `ct1tl/pap3do.js` before the app bundle.
- `j6k3y8.js` installs a service worker that claims clients and routes matching requests.
- `ct1tl/jmqwjq.js` forwards intercepted requests, headers, bodies, and cookies through a controller RPC.
- `ct1tl/csbzam.js` injects the Scramjet client and exchanges cookies with the service worker.
Evidence against
- `package.json` contains no `scripts`, lifecycle hook, or `bin` entry.
- The browser control surface is activated only by opening `index.html`, not npm installation.
- `bfjdx/757lr8.js`/`ct1tl/*` appear to implement a web-proxy framework; no fixed exfiltration host was found in those sources.
Behavioral surface
ChildProcessDynamicRequireFilesystemNetworkWebSocket
HighEntropyStringsMinified
Source & flagged code
9 flagged · loading sourceassets/proxy-runtime-1NyFshf9.jsView file
1patternName = aws_access_key
severity = critical
line = 1
matchedText = var OQ=O...B+=`
Critical
Critical Secret
Package contains a critical-looking secret pattern.
assets/proxy-runtime-1NyFshf9.jsView on unpkg · L11patternName = aws_access_key
severity = critical
line = 1
matchedText = var OQ=O...B+=`
Critical
Secret Pattern
AWS access key ID in assets/proxy-runtime-1NyFshf9.js
assets/proxy-runtime-1NyFshf9.jsView on unpkg · L1bfjdx/757lr8.jsView file
17L18: //# sourceURL=${A}`)();n=c,o=l}else n=g.z$,o=g.Mt;r.construct&&(l.construct=function(e,t,i){let n,s=!1,a={fn:e,this:null,args:t,newTarget:i,return:e=>{s=!0,n=e},call:()=>(s=!0,n=o(...
L19: //# sourceURL=${r.url.href}`),n}return o.body;case"style":return(0,i.sM)(await o.text(),e.context,r.meta);case"sharedworker":case"worker":return(0,i.iP)(new Uint8Array(await o.arra...
Medium
Findings
2 Critical5 High6 Medium4 Low
CriticalCritical Secretassets/proxy-runtime-1NyFshf9.js
CriticalSecret Patternassets/proxy-runtime-1NyFshf9.js
HighObfuscated Payload Loaderassets/ChatPage-zoA8Z6RX.js
HighObfuscated
HighShips High Entropy Blobassets/KaTeX_Script-Regular-D3wIWfF6.woff2
HighKnown Malware Source Similarityassets/fingerprint-Y5nV5FVa.js
HighKnown Malware Source Fingerprint Signatureassets/ChatPage-zoA8Z6RX.js
MediumDynamic Requirebfjdx/757lr8.js
MediumNetwork
MediumProtestware
MediumShips Wasm Modulebfjdx/w7m632.wasm
MediumStructural Risk Force Deep Review
Medium
Affected versions and remediation
This report applies to crazynut@2.0.0.
The versions list below shows the verdict for each recorded version.
- Avoid installing crazynut@2.0.0. 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: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.