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levvleys@2.0.9: Malicious npm security report (Block) | LPM Firewall

registry / levvleys / 2.0.9

levvleys@2.0.9

WhatsApp Web API Library

AI Security Review

scanned 3h ago · by lpm-firewall-ai

After a WhatsApp session opens, the package retrieves channel IDs from a GitHub-hosted file and changes the authenticated account to follow and mute them. The targets can be changed remotely without a package update.

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 consumer creates the normal WhatsApp socket and its connection reaches open state.

Impact

The authenticated WhatsApp account is silently subscribed to attacker-selected channels, altering account state and enabling unwanted channel promotion.

Mechanism

Remote-controlled automatic newsletter subscription and mute actions.

Attack narrative

The default socket stack reaches the newsletter layer. Once a WhatsApp connection opens, that layer waits 30 seconds, downloads a maintainer-controlled JSON list, and follows then mutes each valid newsletter ID. This is not an exposed opt-in API call: it is a hidden account mutation in the ordinary connection path, with remotely changeable targets.

Rationale

levvleys@2.0.9 contains a concrete, remote-controlled and unconsented mutation of a user's authenticated WhatsApp account during normal operation. The benign Node.js version preinstall check does not mitigate this runtime behavior.

Evidence

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

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

•matchType = normalized_sha256 matchedPackage = levvleys@2.0.8 matchedPath = lib/Utils/messages-media.js matchedIdentity = npm:bGV2dmxleXM:2.0.8 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

•matchType = malicious_source_fingerprint_signature signature = dd6fb2ae69fa1137 signatureType = suspicious_hashes sourceLabel = final_verdict:malicious matchedPackage = levvleys@2.0.8 matchedPath = lib/Utils/messages-media.js matchedIdentity = npm:bGV2dmxleXM:2.0.8 similarity = 1.000 shingleOverlap = 66 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.

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

lib/Types/Message.jsView file

3exports.WAMessageStatus = exports.WAMessageStubType = exports.WAProto = void 0; L4: const WAProto_1 = require("../../WAProto"); L5: Object.defineProperty(exports, "WAProto", { enumerable: true, get: function () { return WAProto_1.proto; } });

Medium

Dynamic Require

Package source references dynamic require/import behavior.

lib/Types/Message.jsView on unpkg · L3

WAProto/index.jsView file

•path = WAProto/index.js kind = oversized_source_file sizeBytes = 5329994 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 = levvleys@2.0.8 matchedPath = lib/Utils/messages.js matchedIdentity = npm:bGV2dmxleXM:2.0.8 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

package.jsonView file

Lines 25-65json

25 "main": "lib/index.js",

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

27 "files": [

28 "lib/",

29 "WAProto/",

30 "engine-requirements.js"

31 ],

32 "scripts": {

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

34 "build:docs": "typedoc",

35 "build:tsc": "tsc",

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

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

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

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

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

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

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

43 "prepack": "echo 'levvleys WhatsApp Library'",

44 "prepare": "echo 'levvleys WhatsApp Library'",

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

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L45

46 "release": "release-it",

47 "test": "jest"

48 },

49 "dependencies": {

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

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

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

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

54 "axios": "^1.6.0",

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

56 "chalk": "^4.1.2",

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

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

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

60 "libsignal": "npm:@levvicode/libsignal-node",

61 "lodash": "^4.17.21",

62 "lru-cache": "^11.1.0",

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

64 "p-queue": "^9.0.0",

65 "pino": "^9.6",

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

Lines 349-389javascript

349};

350exports.mediaMessageSHA256B64 = mediaMessageSHA256B64;

351async function getAudioDuration(buffer) {

352 const musicMetadata = await Promise.

lib/Types/Message.jsView file

Lines 1-8javascript

1"use strict";

2Object.defineProperty(exports, "__esModule", { value: true });

3exports.WAMessageStatus = exports.WAMessageStubType = exports.WAProto = void 0

WAProto/index.jsView file

•path = WAProto/index.js kind = oversized_source_file sizeBytes = 5329994 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 = levvleys@2.0.8 matchedPath = lib/Utils/messages.js matchedIdentity = npm:bGV2dmxleXM:2.0.8 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