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

Kentro

5731fcc5-ff19-5d4b-8743-1f8db8cb9e6a | 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
3 days ago
Version
v7.4.3.87
Artifact
SHA256 4EB…3EA
Source
Findings (non-IoC)

Evidence ledger

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

25 detail rows

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.

47
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

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.

Kentro is a WhatsApp Web CRM tool distributed from a developer email address ([email protected]) with 7 users. The evidence reveals 21 network findings across multiple bundled JavaScript files, primarily fetch and Socket.IO calls, alongside two obfuscation findings in asset files.

The critical gap is that the evidence bundle contains no network_endpoints data, making it impossible to assess whether these requests target legitimate Kentro servers, third-party analytics, or suspicious domains. The findings themselves (NET-FETCH-background.js-52, NET-SOCKET_IO spanning multiple versioned asset files) confirm the extension makes network calls, but the destination URLs are not provided. This is a structural limitation of the data, not a fingerprint of malicious intent.

The obfuscation findings deserve scrutiny. OBFUSCATION-FUNCTION_INDIRECT in content/assets/js/v_7_4_3_84_5d4486fa-7201-47e2-ab22-dda3ca1a73a1254.js and OBFUSCATION-LARGE_BASE64 in a Funnil asset file signal indirect function invocation and base64-encoded payloads. In isolation, these are consistent with minified bundled code (webpack, esbuild); minification alone is not malware. However, obfuscation + network calls + no declared permissions + unverified developer identity creates an ambiguous picture that warrants explanation.

The strongest counterargument is that a WhatsApp Web CRM legitimately needs to connect to backend servers and bundle frontend libraries. Modern JavaScript build tools (Vite, Webpack) produce exactly this pattern: bundled libraries with indirect function calls and base64 strings, plus fetch/Socket.IO for API communication. If Kentro's network calls target its own backend ([email protected] or a service domain), this finding profile is benign.

What resolves this: visibility into the actual hostnames the extension contacts. A manifest declaring hosts or host permissions would also clarify scope. Currently, we can confirm network activity exists but cannot confirm it is either malicious or legitimate. The low user count (7) suggests either a brand-new extension or a niche tool, neither a strong signal either way.

Key Reasons

  • 21 network calls (fetch, Socket.IO, jQuery AJAX) across multiple bundled files with no declared host permissions
  • Obfuscation findings (function indirection and large base64 strings) in asset files without visibility into their purpose
  • Developer identity is an email address ([email protected]) rather than a verified publisher account
  • No network_endpoints data provided, making it impossible to assess whether requests target legitimate or suspicious domains
  • Low user count (7) consistent with either a newly published or niche extension

False Positive Considerations

  • Bundled JavaScript (Vite/Webpack) naturally produces function indirection and minification patterns flagged as obfuscation
  • Network findings are expected in any extension that communicates with a backend; severity depends on endpoint identity, which is absent from the bundle

Reviewed 2026-09-30; recommended action: runtime analysis; model confidence 55%.

Chrome version history

Risk trend by version

19 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
+1
Change from previous
No change
Versions:
First analyzed version
7.4.3.26
Mar 21, 2026
Risk range
60 to 76
Across analyzed versions
Latest analyzed version
7.4.3.87
Oct 13, 2026
Selected version
medium
Version
v7.4.3.87
3 days ago
Risk score
65
Findings
25
Change vs previous
No change

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

About This Extension

Experimente as novas funcionalidades do Kentro, projetadas para oferecer mais controle sobre seus leads e aumentar suas prospecções de clientes. Com envios em massa e exportação de contatos. Principais Funcionalidades: ✔ Criação de abas personalizadas para fácil localização de contatos importantes ✔ Visão Kanban para organizar seus leads ✔ Envio de mensagens para números não salvos na agenda ✔ Notas personalizadas para cada contato ✔ Criação de lembretes para retornar ligações ✔ Agendamento de reuniões no Google Agenda ✔ Configuração de lembretes simples com notificações ✔ Banco de respostas rápidas para envio com um clique ✔ Exportação de todos os contatos de grupos ✔ Suporte a múltiplos idiomas (português, espanhol, inglês) ✔ Função de borrar mensagens para criação de vídeos tutoriais. ✔ 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. Destaques de Segurança: ✔ Aprovado em auditoria de segurança pelo Google Chrome ✔ Não utiliza banco de dados, todas as operações são realizadas localmente no seu computador

Frequently Asked Questions