Flagged in the threat library: WaSteal

Our analysis confirmed the behaviour described in the threat library entry. Do not install it. Read the analysis and indicators →

Also reported by malext.io, reddit.com

Chrome Web Store Verified

WhatsSelling

by [email protected] · 67 users
ea3f514b-5fc2-50ca-9993-9501dbd993dd | v7.4.3.87
65/ 100
MEDIUM risk
No change since v7.4.3.85
Threat verdict
Do not install

Confirmed member of a tracked malicious supply-chain campaign.

Analysis record

Analysed
5 days ago
Version
v7.4.3.87
Artifact
SHA256 FB4…AC0
Source
Findings (non-IoC)

Is WhatsSelling safe?

WhatsSelling bills itself as a CRM for Chrome, and the code backs that up. Content scripts connect to app.wascript.com, keep a live socket open, and call api.statsigcdn.com for feature flags. The manifest declares no special permissions and no host permissions, so the extension cannot reach into pages or domains beyond what the browser grants by default.

One file draws attention in the scans. funnil/assets/js/9cf42769-2ad5-4714-8614-9a2b4c455349.CgnacD38.js trips a rule called OBFUSCATION-LARGE_BASE64, which fires whenever a script packs a long encoded blob into a single string. Bundled assets do this constantly, for inline images, fonts and source maps. A real hidden payload would arrive with a malware signature beside it, and across the whole extension the malware scanner matched nothing.

The rest of the alert volume comes from the endpoint extractor misreading code. Entries like color.border.accent.orange, border.radius.circle and calls.function.arguments.delta resemble CSS token names and JavaScript property chains rather than servers anyone contacts. The same extractor counts infrastructure hosts that ship inside every bundled library. Hundreds of the 414 flagged indicators belong in that pile.

A small CRM extension with 67 users sits behind all this, and its content scripts use ordinary web APIs: fetch, jQuery ajax and socket.io. None of the network calls point at login pages, credential stores or unknown drop servers. Anyone uneasy about the socket.io connection can ask the developers where it terminates, but the destinations named in the code match the product's own backend. The findings describe how modern JavaScript bundles look under a scanner.

Evidence ledger

Ranked by severity · findings with a source location link to the code viewer

779 detail rows

YARA Rule Matches

16 rules
SeverityRuleHitsFilesMetadata
LOWcredential env files 30
fluxo/assets/js/b89d7b82-41f7-4061-9bc0-ae95ae5cd0a2.BLiJgZ4E.jscontent/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d28927.jscontent/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d289106.js +27 more
-
LOWpostinstall persistence mechanism 19
content/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d289200.jsfunnil/assets/js/2e0cf7f6-e9bc-41e0-84b5-f570a0e461c8.B8VBrnTG.jsfluxo/assets/js/b89d7b82-41f7-4061-9bc0-ae95ae5cd0a2.BLiJgZ4E.js +16 more
-
LOWpostinstall file download 55
content/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d28912.jsfunnil/assets/ttf/Segoeuibold.chunk.ttffunnil/assets/js/9cf42769-2ad5-4714-8614-9a2b4c455349.CgnacD38.js +52 more
-
LOWNoUseEval 1
whatsapp/wpp/index.js
-
LOWNoUseWeakRandom 38
funnil/index.jscontent/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d2894.jsfluxo/assets/js/aacac57f-f9a2-4a7d-9569-51c193124758.BUttUo7e.js +35 more
-
LOWSQLInjection 1
fluxo/index.js
-
LOWServerHostnameNotVerified 1
content/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d289.js
-
LOWLocalStorageShouldNotBeUsed 15
content/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d28924.jscrm/assets/js/5e35787c-36b2-4a56-8ea4-4e0a75aa6943.D2Np3EBj.jscontent/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d28927.js +12 more
-
LOWpostinstall environment access 111
crm/assets/js/index.COqP7WQ3.jscrm/assets/js/comp.BlkLCxO-.jscontent/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d289139.js +108 more
-
LOWpostinstall network communication 94
manifest.jsoncrm/assets/js/2b070b0a-2c0f-4c9c-bb5b-938727270e32.CWg5n8f0.jscrm/assets/js/5e35787c-36b2-4a56-8ea4-4e0a75aa6943.D2Np3EBj.js +91 more
-
LOWOriginsNotVerified 5
content/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d2896.jsfluxo/assets/js/b89d7b82-41f7-4061-9bc0-ae95ae5cd0a2.BLiJgZ4E.jsfunnil/assets/js/770d23cd-9021-4aef-887e-d47811b5c322.B8_nURbH.js +2 more
-
LOWpostinstall crypto operations 44
crm/assets/js/81588378-4894-485b-a1a7-52b1571a56a9.B9qdt_GQ.jsfluxo/index.jscontent/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d28929.js +41 more
-
LOWpostinstall system command 77
crm/assets/js/22224ae4-c9a0-456b-97d3-6f47a43e6f69.cO50aLre.jscontent/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d2893.jscontent/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d28958.js +74 more
-
LOWpostinstall obfuscation 83
content/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d28937.jscrm/assets/js/22224ae4-c9a0-456b-97d3-6f47a43e6f69.cO50aLre.jscontent/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d2893.js +80 more
-
LOWpostinstall registry modification 8
fluxo/assets/js/aacac57f-f9a2-4a7d-9569-51c193124758.BUttUo7e.jscontent/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d289149.jscontent/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d2895.js +5 more
-
LOWpostinstall file manipulation 172
crm/assets/js/index.CqdIRXBX.jscontent/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d289213.jscontent/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d28912.js +169 more
-

Publisher Evidence

Limited evidence

[email protected]

Publisher identity, store signals, distribution reach, and warning signals used for context. Treat this as supporting evidence, not a clean bill of health.

Chrome does not expose the same publisher verification data as IDE stores, so this score is deliberately conservative.

51
Noisy-finding weight
x1.00
Publisher domain
extensao.store
Observed
Store verification signal
Limited signal
Limited
Extension portfolio
174
Portfolio

11 evidence rows available.

Finding Categories

2
Obfuscation
22
Network
413
IoC Indicators

YARA Rules Matched

16 rules(754 hits)
credential env files postinstall persistence mechanism postinstall file download NoUseEval NoUseWeakRandom SQLInjection ServerHostnameNotVerified LocalStorageShouldNotBeUsed postinstall environment access postinstall network communication OriginsNotVerified postinstall crypto operations postinstall system command postinstall obfuscation postinstall registry modification postinstall file manipulation

Requested Permissions

5 permissions
tabs
Medium
unlimitedStorage
Low
storage
Low
alarms
Low
https://web.whatsapp.com/*
Low

AI Security Report

AI Security Review

Evidence context: threat category none; evidence quality moderate.

Version 7.4.3.87 of WhatsSelling arrives with 1,193 scanner findings, and their shape matters more than their number. The malware scanner matched nothing: zero malware signatures, zero confirmed families, zero exposed secrets. Nearly all the volume sits in two high-noise categories, 754 code-smell hits and 414 indicator extractions. The 22 network findings and the 2 obfuscation findings carry the only real signal, and both hold up once you look at what they point to.

The network findings name frameworks rather than destinations. NET-JQUERY_AJAX fires inside content/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d28923.js, NET-SOCKET_IO inside ...8912.js, ...89149.js, ...89175.js and ...8966.js, and NET-FETCH inside background.js:137 plus a dozen content assets. jQuery ajax, socket.io and fetch form the plumbing of any web app that talks to a server, and a CRM with a live inbox needs a persistent channel. The only named endpoints in the bundle, app.wascript.com and api.statsigcdn.com, fit that description: an application backend and a feature-flag service. api.atlassian.com and the atlassian-us-gov-mod.com hosts look like a bundled Atlassian SDK.

The endpoint list also carries extractor garbage. color.border.accent.orange, border.radius.circle, calls.function.arguments.delta, artboard.phone and btn.glass read as CSS custom properties and JavaScript property chains. They sit in the same list as above.sm and below.sm, which shows the indicator count measures token shape, not hosts contacted.

Two obfuscation flags appear. OBFUSCATION-LARGE_BASE64 lands on funnil/assets/js/9cf42769-2ad5-4714-8614-9a2b4c455349.CgnacD38.js, and OBFUSCATION-FUNCTION_INDIRECT on content/assets/js/v_7_4_3_87_0a650f0a-57a6-4989-860e-3a9d8748d289260.js. Long base64 strings appear in bundled front ends for inline images, fonts and source maps, and indirect calls appear in any transpiled output. A payload would show obfuscation alongside a malware signature, a credential-targeting domain or a cookie read. Obfuscation on its own tells us little.

A skeptic would point at the publisher. [email protected] reads as a mailbox rather than a company, the store listing misspells Chrome, the extension has 67 users, and the manifest shows no declared permissions or host permissions at all. An extension that opens a socket while declaring nothing could be siphoning page data. Three things undercut that reading. Nothing in the scans touches a login page, a session cookie or a password store. The socket destinations match the product's own backend. And the empty permission arrays come with a single manifest-analysis finding, so the manifest parse may simply be incomplete. A fresh scan of the manifest would settle it, and that gap is the only one worth closing.

Key Reasons

  • Zero malware signatures, zero confirmed malware families and zero exposed secrets across 1,193 findings
  • Network findings (NET-SOCKET_IO, NET-FETCH, NET-JQUERY_AJAX) match framework plumbing in bundled content assets, with named endpoints app.wascript.com and api.statsigcdn.com fitting a CRM backend
  • 414 IoC entries include obvious non-hosts such as border.radius.circle and calls.function.arguments.delta
  • Obfuscation flags (OBFUSCATION-LARGE_BASE64, OBFUSCATION-FUNCTION_INDIRECT) appear without adjacent malware signatures or credential-targeting domains
  • Empty permissions and host_permissions arrays alongside a single manifest-analysis finding point to a parse gap rather than hidden capability

False Positive Considerations

  • IoI extractor reading CSS custom properties and JS property chains (color.border.accent.orange, calls.function.arguments.delta) as domains
  • 754 low-severity code-smell findings, a documented high-noise class
  • Large base64 blob in funnil/assets/js/9cf42769-2ad5-4714-8614-9a2b4c455349.CgnacD38.js, normal for bundled front-end builds
  • jQuery ajax, socket.io and fetch flags firing on standard web-app communication patterns in minified assets

Reviewed 2026-10-13; recommended action: suppress false positive; model confidence 70%.

Chrome version history

Risk trend by version

16 analyzed versions. Each point is the latest successful scan for that version; failed zero-score scans are hidden. Dates are based on first seen by risky plugins.

Selected
65
Change since first
+4
Change from previous
No change
Versions:
First analyzed version
7.4.3.54
Jun 19, 2026
Risk range
60 to 73
Across analyzed versions
Latest analyzed version
7.4.3.87
Oct 10, 2026
Selected version
medium
Version
v7.4.3.87
5 days ago
Risk score
65
Findings
1193
Change vs previous
No change

Pick any point on the chart to explore that version's code below.

About This Extension

Características do WhatsSelling: ✔ Envio em massa para contatos ou importados via CSV – Envie mensagens para múltiplos contatos de maneira rápida e prática, sem complicação. ✔ Criação de Abas Personalizadas – Organize seus contatos de forma eficiente e encontre facilmente os mais importantes. ✔ Visão Kanban dos Contatos – Tenha uma visão clara e organizada dos seus contatos com a opção de arrastar e soltar. ✔ Envio de Mensagens para Números Não Salvos – Envie mensagens para qualquer número, mesmo que não esteja na sua agenda, sem precisar adicionar à lista de contatos. ✔ Criação de Notas Personalizadas – Anote informações importantes para cada contato diretamente no perfil deles. ✔ Lembretes para Contatos – Nunca se esqueça de retornar uma ligação ou seguir com um compromisso. Crie lembretes específicos para cada contato. ✔ Agendamento de Reuniões no Google Agenda – Agende compromissos diretamente no seu Google Agenda com facilidade, sem precisar sair da plataforma. ✔ Lembretes Simples e Notificações – Crie lembretes rápidos e receba notificações diretamente no seu dispositivo. ✔ Banco de Respostas Rápidas – Tenha respostas pré-configuradas e envie com um clique para otimizar seu tempo. ✔ Exportação de Contatos do Wpp – Exporte seus contatos diretamente do Wpp ou de grupos de Wpp para facilitar a organização. ✔ Suporte Multilíngue – Use a plataforma em seu idioma nativo: português, espanhol ou inglês, garantindo facilidade de uso. ✔ Assistente AI — Sua inteligência artificial pronta para ajudar! Otimize seu tempo com um assistente inteligente, rápido e sempre disponível. Responda dúvidas, automatize tarefas, gere textos, traduções e muito mais com o poder da IA. Ideal para profissionais, equipes e quem busca praticidade no dia a dia. WhatsSelling é uma ferramenta independente, sem qualquer vínculo com o WhatsApp ou a empresa responsável. Funciona exclusivamente através da Chrome Web Store e opera de maneira autônoma. Não somos uma ferramenta oficial do WhatsApp, mas oferecemos funcionalidades inovadoras para quem precisa de mais praticidade na gestão de contatos e mensagens.

Frequently Asked Questions