Kimwolf Android Botnet Infects Over 2 Million Devices via Exposed ADB and Proxy Networks

The botnet known as Kimwolf has infected more than 2 million Android devices by tunneling through residential proxy networks, according to findings from Synthient. "Key actors involved in the Kimwolf botnet are observed monetizing the botnet through app installs, selling residential proxy...

Holoscope: Open and Lightweight Distributed Telescope and Honeypot Platform

The complexity and scale of Internet attacks call for distributed, cooperative observatories capable of monitoring malicious traffic across diverse networks. Holoscope is a lightweight, cloud-native platform designed to simplify the deployment and management of distributed telescope passive and...

Brazil Hit by Banking Trojan Spread via WhatsApp Worm and RelayNFC NFC Relay Fraud

The threat actor known as Water Saci is actively evolving its tactics, switching to a sophisticated, highly layered infection chain that uses HTML Application HTA files and PDFs to propagate via WhatsApp a worm that deploys a banking trojan in attacks targeting users in Brazil. The latest wave is...

Unraveling Water Saci's New Multi-Format, AI-Enhanced Attacks Propagated via WhatsApp

Through AI-driven code conversion and a layered infection chain involving different file formats and scripting languages, the threat actors behind Water Saci are quickly upgrading their malware delivery and propagation methods across WhatsApp in Brazil...

New Android Trojan 'Herodotus' Outsmarts Anti-Fraud Systems by Typing Like a Human

Cybersecurity researchers have disclosed details of a new Android banking trojan called Herodotus that has been observed in active campaigns targeting Italy and Brazil to conduct device takeover DTO attacks. "Herodotus is designed to perform device takeover while making first attempts to mimic...

Baohuo Android Malware Hijacks Telegram Accounts via Fake Telegram X

New Android malware Baohuo hijacks Telegram X accounts, stealing data and controlling chats. Over 58,000 devices infected, mainly in India and Brazil...

Maverick: a new banking Trojan abusing WhatsApp in a mass-scale distribution

A malware campaign was recently detected in Brazil, distributing a malicious LNK file using WhatsApp. It targets mainly Brazilians and uses Portuguese-named URLs. To evade detection, the command-and-control C2 server verifies each download to ensure it originates from the malware itself. The whol...

Police Bust GXC Team, One of the Most Active Cybercrime Networks

Spanish Guardia Civil and Group-IB arrest 'GoogleXcoder,' the 25-year-old Brazilian mastermind of the GXC Team, for selling AI-powered phishing kits and malware used to steal millions from banks across the US, UK, Spain, and Brazil...

Astaroth Banking Trojan Abuses GitHub to Remain Operational After Takedowns

Cybersecurity researchers are calling attention to a new campaign that delivers the Astaroth banking trojan that employs GitHub as a backbone for its operations to stay resilient in the face of infrastructure takedowns. "Instead of relying solely on traditional command-and-control C2 servers that...

Researchers Warn of Self-Spreading WhatsApp Malware Named SORVEPOTEL

Brazilian users have emerged as the target of a new self-propagating malware dubbed SORVEPOTEL that spreads via the popular messaging app WhatsApp. The campaign, codenamed Water Saci by Trend Micro, weaponizes the trust with the platform to extend its reach across Windows systems, adding the atta...

UAT-8099: Chinese-speaking cybercrime group targets high-value IIS for SEO fraud

Cisco Talos is disclosing details on UAT-8099, a Chinese-speaking cybercrime group mainly involved in search engine optimization SEO fraud and theft of high-value credentials, configuration files, and certificate data. Cisco's file census and DNS analysis show affected Internet Information Servic...

EvilAI Malware Masquerades as AI Tools to Infiltrate Global Organizations

Threat actors have been observed using seemingly legitimate artificial intelligence AI tools and software to sneakily slip malware for future attacks on organizations worldwide. According to Trend Micro, the campaign is using productivity or AI-enhanced tools to deliver malware targeting various...

TA558 Uses AI-Generated Scripts to Deploy Venom RAT in Brazil Hotel Attacks

The threat actor known as TA558 has been attributed to a fresh set of attacks delivering various remote access trojans RATs like Venom RAT to breach hotels in Brazil and Spanish-speaking markets. Russian cybersecurity vendor Kaspersky is tracking the activity, observed in summer 2025, to a cluste...

TA558 Uses AI-Generated Scripts to Deploy Venom RAT in Brazil Hotel Attacks

The threat actor known as TA558 has been attributed to a fresh set of attacks delivering various remote access trojans RATs like Venom RAT to breach hotels in Brazil and Spanish-speaking markets. Russian cybersecurity vendor Kaspersky is tracking the activity, observed in summer 2025, to a cluste...

GhostRedirector Hacks 65 Windows Servers Using Rungan Backdoor and Gamshen IIS Module

Cybersecurity researchers have lifted the lid on a previously undocumented threat cluster dubbed GhostRedirector that has managed to compromise at least 65 Windows servers primarily located in Brazil, Thailand, and Vietnam. The attacks, per Slovak cybersecurity company ESET, led to the deployment...

Google to Verify All Android Developers in 4 Countries to Block Malicious Apps

Google has announced plans to begin verifying the identity of all developers who distribute apps on Android, even for those who distribute their software outside the Play Store. "Android will require all apps to be registered by verified developers in order to be installed by users on certified...

Evolution of the PipeMagic backdoor: from the RansomExx incident to CVE-2025-29824

In April 2025, Microsoft patched 121 vulnerabilities in its products. According to the company, only one of them was being used in real-world attacks at the time the patch was released: CVE-2025-29824. The exploit for this vulnerability was executed by the PipeMagic malware, which we first...

Portabilis i‑Diário 安全漏洞

Portabilis i-Diário is an open source school calendar and teacher interaction management system from Portabilis, Brazil. A security vulnerability exists in Portabilis i-Diário 1.5.0 and earlier versions, which stems from an improperly restricted interface layer that can be remotely triggered by a...

New Android Malware Wave Hits Banking via NFC Relay Fraud, Call Hijacking, and Root Exploits

Cybersecurity researchers have disclosed a new Android trojan called PhantomCard that abuses near-field communication NFC to conduct relay attacks for facilitating fraudulent transactions in attacks targeting banking customers in Brazil. "PhantomCard relays NFC data from a victim's banking card t...

Spam campaign targeting Brazil abuses Remote Monitoring and Management tools

Cisco Talos identified a spam campaign targeting Brazilian users with commercial remote monitoring and management RMM tools since at least January 2025. Talos observed the use of PDQ Connect and N-able remote access tools in this campaign. The spam message uses the Brazilian electronic invoice...