registry / Malware / lupy4u

lupy4u

Lupy4u WhatsApp Multi-Device API Library

This report shows the evidence for lupy4u@4.5.6. 1 of 6 known versions is blocked or flagged. See all versions.

AI Security Review

scanned 3mo ago · by lpm-firewall-ai

The package contains a concrete, concealed, remotely controlled action against the user's authenticated account during ordinary runtime. The benign lifecycle/version check and scoped media helper do not mitigate that behavior.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review

Trigger

User creates the default socket and its connection opens.

Impact

Unauthorized changes to the user's WhatsApp newsletter subscriptions, remotely expandable by the package operator.

Mechanism

Remote-configured automatic newsletter follow/mute actions.

Attack narrative

The default socket composition reaches makeNewsletterSocket. Once a user-authenticated WhatsApp connection opens, its listener waits 30 seconds, downloads arbitrary newsletter IDs from a GitHub-controlled JSON file, then follows and mutes each ID through WhatsApp queries. This occurs without an API call or user opt-in, and the remote list lets the operator alter targets later.

AI rationale

Evidence

lib/Socket/newsletter.jslib/Socket/messages-send.jslib/Socket/business.jslib/Socket/index.jspackage.jsonengine-requirements.jslib/Utils/messages-media.js

Network endpoints1

raw.githubusercontent.com/LevviCodeID/Levi4than/refs/heads/main/levvleys.json

Decision evidence

public snapshot

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

Evidence for block

lib/Socket/newsletter.js fetches a remotely controlled newsletter-ID list.
On every open connection it follows and mutes each fetched newsletter without caller consent.
lib/Socket/messages-send.js composes the newsletter layer into the default socket chain.
Remote list permits the operator to change affected account actions after publication.

Evidence against

package.json preinstall only checks the Node major version.
messages-media.js eval is a fixed-string dynamic import for audio decoding.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEvalFilesystemNetworkWebSocket

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 108 file(s), 1.47 MB of source, external domains: call.whatsapp.com, catbox.moe, ezgif.com, levvicode.cloud, mmg.whatsapp.net, qu.ax, raw.githubusercontent.com, registry.npmjs.org, scdn.pdi.moe, tmpfiles.org, uguu.se, web.whatsapp.com, www.levvicode.cloud, www.whatsapp.com

Oversized source lightweight scan

WAProto/index.js4.23 MB file, sampled 256 KB

ChildProcess

Source & flagged code

9 flagged

package.jsonView file

Lines 24-64json

24 "types": "lib/index.d.ts",

25 "files": [

26 "lib/*",

27 "WAProto/*",

28 "engine-requirements.js",

29 "4lupy-signal"

30 ],

31 "scripts": {

32 "build:all": "tsc && typedoc",

33 "build:docs": "typedoc",

34 "build:tsc": "tsc",

35 "changelog:last": "conventional-changelog -p angular -r 2",

36 "changelog:preview": "conventional-changelog -p angular -u",

37 "changelog:update": "conventional-changelog -p angular -i CHANGELOG.md -s -r 0",

38 "example": "node --inspect -r ts-node/register Example/example.ts",

39 "gen:protobuf": "sh WAProto/GenerateStatics.sh",

40 "lint": "node -e \"const { execSync } = require('child_process'); execSync('find lib/ -name \\\"*.js\\\" | xargs -I{} node --check {}'); console.log('LINT_OK');\"",

41 "lint:fix": "eslint lib --fix --ext .js",

42 "prepack": "echo 'lupy4u WhatsApp Library'",

43 "prepare": "echo 'lupy4u WhatsApp Library'",

44 "preinstall": "node ./engine-requirements.js",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L44

45 "release": "release-it",

46 "test": "jest"

47 },

48 "dependencies": {

49 "@adiwajshing/keyed-db": "^0.2.4",

50 "@cacheable/node-cache": "^1.4.0",

51 "@hapi/boom": "^9.1.3",

52 "async-mutex": "^0.5.0",

53 "axios": "^1.6.0",

54 "chalk": "^4.1.2",

55 "gradient-string": "^2.0.2",

56 "cache-manager": "^5.7.6",

57 "cheerio": "^1.0.0-rc.10",

58 "libphonenumber-js": "^1.10.20",

59 "libsignal": "file:./4lupy-signal",

60 "lodash": "^4.17.21",

61 "music-metadata": "^7.12.3",

62 "pino": "^9.6",

63 "protobufjs": "^6.11.3",

64 "uuid": "^10.0.0",

lib/WABinary/constants.jsView file

Lines 583-623javascript

583 '044',

584 'mms_cat_v1_forward_hot_override_enabled',

585 'user_notice',

586 'ptt_waveform_send',

587 '047',

588 'Asia/Calcutta',

589

lib/Utils/messages-media.jsView file

•matchType = normalized_sha256 matchedPackage = aytidaoffc@1.0.0 matchedPath = lib/Utils/messages-media.js matchedIdentity = npm:YXl0aWRhb2ZmYw:1.0.0 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.

lib/Utils/messages-media.jsView on unpkg

369try { L370: const { default: decoder } = await eval('import(\'audio-decode\')'); L371: let audioData;

Low

Eval

Package source references a known benign dynamic code generation pattern.

lib/Utils/messages-media.jsView on unpkg · L369

4lupy-signal/index.jsView file

Lines 1-11javascript

1'use strict';

3exports.crypto = require('./src/crypto');

4exports.curve = require('./src/curve');

Medium

Dynamic Require

Package source references dynamic require/import behavior.

4lupy-signal/index.jsView on unpkg · L2

WAProto/GenerateStatics.shView file

•path = WAProto/GenerateStatics.sh kind = build_helper sizeBytes = 301 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

WAProto/GenerateStatics.shView on unpkg

WAProto/index.jsView file

•path = WAProto/index.js kind = oversized_source_file sizeBytes = 4435234 magicHex = [redacted]

Medium

Oversized Source File

Package contains source files above the normal full-analysis size ceiling.

WAProto/index.jsView on unpkg

lib/Utils/messages.jsView file

•matchType = normalized_sha256 matchedPackage = aytidaoffc@1.0.0 matchedPath = lib/Utils/messages.js matchedIdentity = npm:YXl0aWRhb2ZmYw:1.0.0 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.

lib/Utils/messages.jsView on unpkg

Source & flagged code

9 flagged · loading source

package.jsonView file

•scripts.preinstall = node ./engine-requirements.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

lib/WABinary/constants.jsView file

603patternName = google_api_key severity = high line = 603 matchedText = 'AIzaSyD...Lk',

High

High Secret

Package contains a high-severity secret pattern.

lib/WABinary/constants.jsView on unpkg · L603

603patternName = google_api_key severity = high line = 603 matchedText = 'AIzaSyD...Lk',

High

Secret Pattern

Google API key in lib/WABinary/constants.js

lib/WABinary/constants.jsView on unpkg · L603

lib/Utils/messages-media.jsView file

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/Utils/messages-media.jsView on unpkg

369try { L370: const { default: decoder } = await eval('import(\'audio-decode\')'); L371: let audioData;

Low

Eval

Package source references a known benign dynamic code generation pattern.

lib/Utils/messages-media.jsView on unpkg · L369

4lupy-signal/index.jsView file

2L3: exports.crypto = require('./src/crypto'); L4: exports.curve = require('./src/curve');

Medium

Dynamic Require

Package source references dynamic require/import behavior.

4lupy-signal/index.jsView on unpkg · L2

WAProto/GenerateStatics.shView file

•path = WAProto/GenerateStatics.sh kind = build_helper sizeBytes = 301 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

WAProto/GenerateStatics.shView on unpkg

WAProto/index.jsView file

•path = WAProto/index.js kind = oversized_source_file sizeBytes = 4435234 magicHex = [redacted]

Medium

Oversized Source File

Package contains source files above the normal full-analysis size ceiling.

WAProto/index.jsView on unpkg

lib/Utils/messages.jsView file

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

lib/Utils/messages.jsView on unpkg

Findings

5 High5 Medium6 Low

HighInstall Time Lifecycle Scriptspackage.json

HighHigh Secretlib/WABinary/constants.js

HighKnown Malware Source Similaritylib/Utils/messages-media.js

HighKnown Malware Source Similaritylib/Utils/messages.js

HighSecret Patternlib/WABinary/constants.js

MediumDynamic Require4lupy-signal/index.js

MediumNetwork

MediumShips Build HelperWAProto/GenerateStatics.sh

MediumOversized Source FileWAProto/index.js

MediumStructural Risk Force Deep Review

LowNon Install Lifecycle Scripts

LowScripts Present

LowEvallib/Utils/messages-media.js

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

Affected versions and remediation

This report applies to lupy4u@4.5.6.

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

Avoid installing lupy4u@4.5.6. 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: 2026-08-08 23:34:10.948Z (UTC).

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

Versions

6 known versions

4.5.6latestshownMaliciousMalwareBlockPublishedAug 8, 2026, 11:31 PM 4.0.0Clean—AllowPublishedAug 8, 2026, 12:15 PM 1.0.16Clean—AllowPublishedAug 5, 2026, 2:48 PM 1.0.15Clean—AllowPublishedAug 5, 2026, 2:34 PM 1.0.14Clean—AllowPublishedAug 5, 2026, 6:49 AM 1.0.6Clean—AllowPublishedAug 4, 2026, 7:56 PM

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other malware packages

Related packages

Other malware packages

Source & flagged code