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rubbydev-crash-baileys@1.0.0: Malicious npm security report | LPM Firewall

registry / rubbydev-crash-baileys / 1.0.0

rubbydev-crash-baileys@1.0.0

WhatsApp API Modification By rubbydev

AI Security Review

scanned 6d ago · by lpm-firewall-ai

This is an unofficial WhatsApp Web client forked from Baileys. The install script only checks the Node.js version. ffmpeg, session files, and WhatsApp network calls run when a host app uses the library, not as a hidden install payload.

Static reason

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

Trigger

npm install runs the Node version check; the host app must import the library and connect a socket.

Impact

No confirmed host compromise, credential theft, or unconsented install-time mutation was found. Scanner similarity and crash branding are naming and dual-use client features, not a supply-chain payload.

Mechanism

unofficial WhatsApp Web protocol client

AI rationale

Inspected lifecycle scripts, entrypoints, and high-signal files: preinstall is a Node 20 check, and network, ffmpeg, and token-dictionary hits match a Baileys WhatsApp client. Crash-themed naming and extra album protobuf fields are user-invoked dual-use messaging, not an install-time attack.

OSV advisory

OpenSSF/OSV

Advisory

MAL-2026-17450

Source

OpenSSF Malicious Packages via OSV

Summary

Malicious code in rubbydev-crash-baileys (npm)

Details

This package is a fork of the Baileys WhatsApp Web library (npm) and belongs to the "PhantomSub" family described by OX Security in September 2026: the publisher injected code that, without the installer asking, uses the installer's own authenticated WhatsApp session to subscribe that account to WhatsApp Channels (newsletters) the publisher chose, by sending the WhatsApp `w:mex` FOLLOW query (query_id 7871414976211147) for each target channel JID. `package/lib/Socket/newsletter.js` lines 62-70 (cited line 68: `QueryIds.FOLLOW`) run in the body of `makeNewsletterSocket`, so they fire whenever a socket is created: 10 seconds later the code sends a FOLLOW query for the channel JID `120363427594836299@newsletter`, stored as the base64 literal `MTIwMzYzNDI3NTk0ODM2Mjk5QG5ld3NsZXR0ZXI=` and decoded with `Buffer.from(..., "base64")`. There is no opt-out and the behavior is not documented. Line numbers refer to version 1.0.0. Static review of the published tarball(s) found no code that sends WhatsApp credentials or session keys off-host, no install-time payload (the only install hook is Baileys' stock Node.js version check in `engine-requirements.js`), and no persistence; the payload runs when an application creates a WhatsApp socket with the library. The harm is the covert use of the victim's account to inflate the publisher's channel subscribers. SHA-256 of the published npm tarball(s): 1.0.0: `6f864bd56ccace95160247ff88e51a463a7655ce0daa083ac6748c714970e016`.

Source & flagged code

7 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

600patternName = google_api_key severity = high line = 600

High

High Secret

Package contains a high-severity secret pattern.

lib/WABinary/constants.jsView on unpkg · L600

600patternName = google_api_key severity = high line = 600

High

Secret Pattern

Google API key in lib/WABinary/constants.js

lib/WABinary/constants.jsView on unpkg · L600

lib/Utils/validate-connection.jsView file

107pull: false, L108: devicePairingData: { L109: buildHash: appVersionBuf, ... L134: const { details, hmac, accountType } = proto.ADVSignedDeviceIdentityHMAC.decode(deviceIdentityNode.content); L135: let hmacPrefix = Buffer.from([]); L136: if (accountType !== undefined && accountType === proto.ADVEncryptionType.HOSTED) { ... L158: ]); L159: account.deviceSignature = Curve.sign(signedIdentityKey.private, deviceMsg); L160: const identity = createSignalIdentity(lid, accountSignatureKey);

Low

Weak Crypto

Package source references weak cryptographic algorithms.

lib/Utils/validate-connection.jsView on unpkg · L107

WAProto/index.jsView file

•path = WAProto/index.js kind = oversized_source_file sizeBytes = 12145764 magicHex = [redacted]

Medium

Oversized Source File

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

WAProto/index.jsView on unpkg

lib/Utils/business.jsView file

•stage = ast_semantic_analysis; reason = ast_alias_growth_limit_exceeded; limitedFiles = 3

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

lib/Utils/business.jsView on unpkg

lib/Utils/messages-media.jsView file

•matchType = normalized_sha256 matchedPackage = @lekzo/baileys@0.0.6 matchedPath = lib/Utils/messages-media.js matchedIdentity = npm:QGxla3pvL2JhaWxleXM:0.0.6 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

Source & flagged code

7 flagged

package.jsonView file

Lines 20-60json

20 "author": "rubbydev",

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

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

23 "files": [

24 "lib/**/*",

25 "WAProto/*.js",

26 "WAProto/*.d.ts",

27 "engine-requirements.js"

28 ],

29 "scripts": {

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

31 "build:docs": "typedoc",

32 "build:tsc": "tsc",

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

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

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

36 "lint": "eslint src --ext .js,.ts,.jsx,.tsx",

37 "lint:fix": "eslint src --fix --ext .js,.ts,.jsx,.tsx",

38 "prepack": "",

39 "prepare": "",

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

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L40

41 "release": "release-it",

42 "test": "jest"

43 },

44 "dependencies": {

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

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

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

48 "libsignal": "github:tenka-san/libsignal-node",

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

50 "music-metadata": "^11.12.3",

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

52 "pino": "^9.6",

53 "protobufjs": "^7.5.6",

54 "whatsapp-rust-bridge": "0.5.4",

55 "ws": "^8.13.0",

56 "chalk": "^4.1.2",

57 "cache-manager": "^7.2.8"

58 },

59 "devDependencies": {

60 "@eslint/eslintrc": "^3.3.1",

lib/WABinary/constants.jsView file

Lines 580-620javascript

580 '044',

581 'mms_cat_v1_forward_hot_override_enabled',

582 'user_notice',

583 'ptt_waveform_send',

584 '047',

585 'Asia/Calcutta',

586

lib/Utils/validate-connection.jsView file

Lines 87-127javascript

87 supportBizHostedMsg: true,

88 supportRecentSyncChunkMessageCountTuning: true,

89 supportHostedGroupMsg: true,

90 supportFbidBotChatHistory: true,

91

WAProto/index.jsView file

•path = WAProto/index.js kind = oversized_source_file sizeBytes = 12145764 magicHex = [redacted]

Medium

Oversized Source File

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

WAProto/index.jsView on unpkg

lib/Utils/business.jsView file

•stage = ast_semantic_analysis; reason = ast_alias_growth_limit_exceeded; limitedFiles = 3

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

lib/Utils/business.jsView on unpkg

lib/Utils/messages-media.jsView file

•matchType = normalized_sha256 matchedPackage = @lekzo/baileys@0.0.6 matchedPath = lib/Utils/messages-media.js matchedIdentity = npm:QGxla3pvL2JhaWxleXM:0.0.6 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