wailib
WhatsApp Web API Library | fork com normalizadores LID (porta @boruto_vk7/baileys)
This report shows the evidence for wailib@1.0.0, the only known version.
OpenSSF/OSV Malicious Advisory
imported 21d ago · by OpenSSF/OSVOpenSSF/OSV advisory MAL-2026-17451 confirms this npm version as malicious.
Advisory
MAL-2026-17451
Source
OpenSSF Malicious Packages via OSV
Summary
Malicious code in wailib (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/messages-recv.js` lines 45-72 define a char-code decoder (`qvnr`) and use it to build two channel JIDs, `120363428355171197@newsletter` and `120363425751417260@newsletter`, and the method names `newsletterFollow` (`pzha`, cited line 62: `const pzha = qvnr([`) and `newsletterMute` (`wjcf`, line 68), so neither the JIDs nor the method names appear in the source as text. Lines 1125-1140, in the `connection.update` handler, wait 30 seconds after the connection opens and then, for each JID, call `sock[pzha](id)` to follow the channel and, 3 seconds later, `sock[wjcf](id)` to mute it, so the victim is not notified of the channel's posts. There is no opt-out. The README (Portuguese) states "Sem auto-follow de canais — removida a rotina que seguia canais automaticamente apos conectar" ("No channel auto-follow — the routine that followed channels automatically after connecting was removed"), which the shipped code contradicts. The code is derived from `noxleyss` (MAL-2026-17402), whose name it still uses in `package/lib/Utils/generics.js`.
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: `e762bd70253081e1f523e929509e8bd5ff005feaaec6580f8f8b95ee84085920`.
References
Independent LPM AI assessment
CleanIndependent AI assessment: clean. LPM AI assessed this version as clean; the assessments disagree.
Direct inspection shows the preinstall hook only enforces Node 20+. Flagged dynamic loading, process spawning, file writes, and networking are explicit runtime media/library utilities, not an install-time or import-time malicious chain.
Static reason
One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review
Trigger
npm preinstall or explicit runtime helper invocation
Impact
Older Node installations are rejected; no unconsented collection or exfiltration established.
Mechanism
Node version validation and caller-supplied media processing
AI rationale
Direct inspection shows the preinstall hook only enforces Node 20+. Flagged dynamic loading, process spawning, file writes, and networking are explicit runtime media/library utilities, not an install-time or import-time malicious chain.
Evidence
package.jsonengine-requirements.jslib/Utils/messages-media.jslib/Utils/generics.jslib/Store/make-in-memory-store.js
Independent scan evidence
public snapshotAI called this Clean at 93.0% confidence as Benign with low false-positive risk.
Evidence for AI clean decision
- Preinstall runs only a Node-version gate.
Evidence against
- No install-time network, file harvesting, or control-surface mutation found.
- The uploader sends only its caller-provided buffer when explicitly invoked.
- eval dynamically loads optional audio decoding; it does not evaluate received code.
- ffmpeg invocation uses a fixed executable and constructed argument array.
Behavioral surface
ChildProcessCryptoDynamicRequireEvalFilesystemNetworkWebSocket
HighEntropyStringsUrlStrings
Oversized source lightweight scan
WAProto/index.js4.23 MB file, sampled 256 KB
ChildProcess
Source & flagged code
9 flagged · loading sourcepackage.jsonView file
•scripts.preinstall = node ./engine-requirements.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkglib/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 · L603603patternName = 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 · L603lib/Utils/messages-media.jsView file
•matchType = normalized_sha256
matchedPackage = levvleys@2.0.7
matchedPath = lib/Utils/messages-media.js
matchedIdentity = npm:bGV2dmxleXM:2.0.7
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 unpkg369try {
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 · L369lib/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 · L3WAProto/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 unpkgWAProto/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 unpkglib/Utils/messages.jsView file
•matchType = normalized_sha256
matchedPackage = levvleys@2.0.7
matchedPath = lib/Utils/messages.js
matchedIdentity = npm:bGV2dmxleXM:2.0.7
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 unpkgFindings
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 Requirelib/Types/Message.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 wailib@1.0.0.
The versions list below shows the verdict for each recorded version.
- Avoid installing wailib@1.0.0. 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: .
Source advisory published: .
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