Maverick is a banking Trojan targeting Brazilian users via a large-scale WhatsApp distribution campaign. It starts with a malicious LNK file sent through WhatsApp, leading to a fileless infection chain. The malware uses the WPPConnect project to automate spreading through hijacked WhatsApp accounts. It monitors multiple Brazilian banks, cryptocurrency exchanges, and a payment platform to steal banking credentials. Maverick employs advanced evasion techniques including AI-assisted code development and shares traits with the Coyote banking Trojan. The campaign is notable for its worm-like propagation and exploitation of a widely used messaging platform.
A new Astaroth banking trojan campaign has been discovered abusing GitHub to host malware configurations. The infection begins with a phishing email containing a link to download a zipped Windows shortcut file, which installs the Astaroth malware. The trojan detects when users access banking or cryptocurrency websites and steals credentials through keylogging. It sends stolen information to attackers using Ngrok reverse proxy and uses GitHub to update its configuration when command and control servers become inaccessible. The malware primarily targets South American countries, with a focus on Brazil. Astaroth employs various anti-analysis techniques and targets specific banking and cryptocurrency-related sites. The GitHub repositories hosting the malicious configurations have been reported and taken down.
SORVEPOTEL has been observed to spread across Windows systems through convincing phishing messages with malicious ZIP file attachments. Interestingly, the phishing message that contains the malicious file attachment requires users to open it on a desktop, suggesting that threat actors might be more interested in targeting enterprises rather than consumers. Once opened, the malware automatically propagates via WhatsApp Web, causing infected accounts to be banned due to excessive spam activity.
Gunra Ransomware is a double extortion group targeting global victims, excluding the US. They primarily attack Windows systems, recently expanding to Linux. The group uses phishing as their main vector and negotiates through a WhatsApp-themed chat panel. They can encrypt large files quickly using advanced stream ciphers. The Data Leak Site has undergone several changes, including a brief clearweb presence. Victims span multiple countries and industries, with South Korea, Brazil, and Japan topping the list. The ransomware shares code similarities with Conti and Akira, but newer versions appear unique. Negotiations reveal ambitious ransom demands, sometimes unrealistic. The group employs various evasion techniques and uses multiple MITRE ATT&CK tactics.
Insikt Group has identified five distinct activity clusters linked to TAG-144 (Blind Eagle), targeting primarily Colombian government entities across local, municipal, and federal levels throughout 2024 and 2025. The clusters share similar tactics, techniques, and procedures (TTPs) such as using open-source and cracked remote access trojans (RATs), dynamic domain providers, and legitimate internet services (LIS) for staging. However, they differ in infrastructure, malware deployment, and operational methods. The group maintains an extensive operational infrastructure, employs various RATs, and uses multi-stage infection chains. TAG-144's primary focus appears to be credential theft and espionage, with evidence linking it to Red Akodon and compromised Colombian government email accounts used in spearphishing campaigns.
The Efimer Trojan is spreading through compromised WordPress sites, malicious torrents, and email campaigns impersonating lawyers. It steals cryptocurrency by replacing wallet addresses in the clipboard and can execute additional malicious scripts. The Trojan communicates with its command-and-control server via the Tor network. It has additional capabilities to brute-force WordPress sites and harvest email addresses for further distribution. The malware primarily targeted users in Brazil, India, Spain, Russia, Italy, and Germany between October 2024 and July 2025, affecting over 5,000 Kaspersky users.
Chaos RAT is an open-source remote administration tool written in Golang that has evolved since 2022 to support both Linux and Windows platforms. A critical vulnerability identified as CVE-2024-30850 exists in its web control panel, allowing remote code execution on the server. Although currently limited in usage, Chaos RAT's low detection profile enables threat actors to perform espionage, data exfiltration, and maintain persistent access. The malware employs multiple techniques including privilege escalation, persistence, and command and control communications. Organizations should prioritize patching the vulnerable control panel, restrict access to administrative interfaces, and monitor for indicators of compromise. The threat is assessed as high severity due to its potential impact and ease of exploitation without user interaction. Patch status is not confirmed; no official fix or patch links are provided. The affected platforms include Linux and Windows systems. No specific countries are identified as targeted, but those with significant Linux and Windows server use and strategic geopolitical interests may be at higher risk.
A malicious campaign targeting primarily Brazilian residents has been discovered, with attacks detected since early 2025. The attackers employed phishing emails, some sent from compromised company servers, to distribute malware. Two attack chains were identified: one using a malicious browser extension for Google Chrome, Microsoft Edge, and Brave, and another utilizing Mesh Agent or PDQ Connect Agent. The campaign aimed to steal authentication data from victims' bank accounts, particularly targeting Banco do Brasil customers. Over 700 downloads of the malicious extension were recorded, affecting users in Brazil, Colombia, Czech Republic, Mexico, Russia, Vietnam, and other countries. The attackers used sophisticated techniques, including virtualization checks, UAC bypass, and file deletion to evade detection.
Earth Lamia is an advanced persistent threat (APT) actor active since 2023, targeting organizations primarily in Brazil, India, and Southeast Asia. The group exploits web application vulnerabilities, notably SQL injection, to gain initial access. They have developed custom malware tools such as the PULSEPACK backdoor and BypassBoss for privilege escalation. Their targeting has evolved from financial services to logistics, online retail, IT companies, universities, and government organizations. Techniques used include DLL sideloading, leveraging legitimate binaries, and modular backdoor deployment. The group's campaigns are linked to other reported activities, indicating a sophisticated and evolving threat actor.
The 'Game of Emperor' report details a persistent cyber intrusion campaign by the threat actor 'Earth Estries' targeting sectors such as consulting, managed service providers, NGOs, and telecoms. The campaign affects multiple countries primarily outside Europe, including Afghanistan, Brazil, India, Indonesia, Malaysia, Pakistan, Philippines, South Africa, Taiwan, Thailand, USA, and Vietnam. There are no known exploits or patches associated with this threat. The campaign is ongoing but assessed as medium severity due to its persistence and potential indirect risks to European organizations through global supply chains.
