registry / Credential exfiltration / nottuff28
nottuff28
Republished package
This report shows the evidence for nottuff28@2.0.0. 3 of 4 known versions are blocked or flagged. The newest version, 0.0.1-security, is allowed. See all versions.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiSource establishes a concrete remote-controlled browsing proxy with request and cookie handling, plus automatic third-party script execution. Although it lacks install hooks, this is malicious runtime behavior rather than a benign package library.
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` and application code initializes the proxy controller.
Impact
A remote operator can control proxied browsing traffic and receive request URLs, headers, bodies, referrers, and cookie state for routed pages.
Mechanism
Remote-controlled service-worker proxy with cookie and request forwarding.
Attack narrative
The package is a browser application masquerading as an npm package. When its HTML entrypoint is opened, it loads a remote script, registers a service worker, and creates a proxy transport to a remote WebSocket endpoint. The service-worker/controller code forwards proxied request URLs, headers, method, body, referrer, and supports remote cookie setting, giving the remote service control over and visibility into routed browsing sessions. Obfuscated application code further inhibits inspection.
AI rationale
Source establishes a concrete remote-controlled browsing proxy with request and cookie handling, plus automatic third-party script execution. Although it lacks install hooks, this is malicious runtime behavior rather than a benign package library.
Evidence
index.htmlassets/boot-CVPGRFHh.jsj6k3y8.jsct1tl/jmqwjq.jsct1tl/csbzam.jsct1tl/pap3do.jsassets/ChatPage-zoA8Z6RX.jsbfjdx/757lr8.js
Network endpoints3
c.vipersfutbol.com/script.jswss://21baseballacademy.com/fairs/www.googletagmanager.com/gtag/js?id=G-0VL3ZSBXDH
Decision evidence
public snapshotAI called this Malicious at 98.0% confidence as Malware with low false-positive risk.
Evidence for block
- `index.html` loads third-party `https://c.vipersfutbol.com/script.js` automatically.
- `assets/boot-CVPGRFHh.js` registers `j6k3y8.js` as a service worker at runtime.
- `assets/boot-CVPGRFHh.js` connects its proxy transport to `wss://21baseballacademy.com/fairs/`.
- `ct1tl/jmqwjq.js` intercepts matching fetches and forwards URL, referrer, headers, method, and body to a controller.
- `ct1tl/csbzam.js` routes remote requests and propagates cookies through the service-worker transport.
- `assets/ChatPage-zoA8Z6RX.js` is heavily obfuscated, concealing application behavior.
Evidence against
- `package.json` has no preinstall, install, postinstall, or other lifecycle hook.
- No Node filesystem, shell, credential-file, or npm-token harvesting code was found in inspected package scripts.
- The package does not mutate AI-agent configuration or control surfaces.
Behavioral surface
ChildProcessDynamicRequireFilesystemNetworkWebSocket
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 nottuff28@2.0.0.
The versions list below shows the verdict for each recorded version.
- Avoid installing nottuff28@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.