HoneyMyte updates CoolClient and deploys multiple stealers in recent campaigns

Over the past few years, we’ve been observing and monitoring the espionage activities of HoneyMyte (aka Mustang Panda or Bronze President) within Asia and Europe, with the Southeast Asia region being the most affected. The primary targets of most of Read More …

Watering Hole Attack Targets EmEditor Users with Information-Stealing Malware

In late December 2025, EmEditor, a highly extensible and widely used text, code, and CSV editor developed by U.S.-based Emurasoft, published a security advisory warning users that its download page had been compromised. The attackers’ objective was to distribute a Read More …

From Extension to Infection: An In-Depth Analysis of the Evelyn Stealer Campaign Targeting Software Developers

On December 8, 2025, Koi.ai published their findings about a campaign specifically targeting software developers through weaponized Visual Studio Code extensions. Here, Trend Micro will provide a more in-depth analysis of the multistage delivery of the Evelyn information stealer. Evelyn Read More …

StealC malware control panels could give experts the tools they need to spy on hackers

Cybersecurity researchers have managed to break into the web-based control panel for the StealC infostealer and gain valuable information on how the malware operates, and who both the attackers and the victims are. StealC is an immensely popular infostealer malware Read More …

Analyzing a Multi-Stage AsyncRAT Campaign via Managed Detection and Response

AsyncRAT has emerged as a notable Remote Access Trojan (RAT) used by threat actors for its robust capabilities and ease of deployment. It gained favor for its extensive feature set, which includes keylogging, screen capturing, and remote command execution capabilities. Read More …

The HoneyMyte APT evolves with a kernel-mode rootkit and a ToneShell backdoor

In mid-2025, Kaspersky researchers identified a malicious driver file on computer systems in Asia. The driver file is signed with an old, stolen, or leaked digital certificate and registers as a mini-filter driver on infected machines. Its end-goal is to Read More …

From cheats to exploits: Webrat spreading via GitHub

In early 2025, security researchers uncovered a new malware family named Webrat. Initially, the Trojan targeted regular users by disguising itself as cheats for popular games like Rust, Counter-Strike, and Roblox, or as cracked software. In September, the attackers decided Read More …

CISA and Partners Release Update to Malware Analysis Report BRICKSTORM Backdoor

Today, the Cybersecurity and Infrastructure Security Agency (CISA), National Security Agency, and Canadian Centre for Cyber Security released an update to the Malware Analysis Report BRICKSTORM Backdoor with indicators of compromise (IOCs) and detection signatures for additional BRICKSTORM samples. This Read More …

SantaStealer is Coming to Town: A New, Ambitious Infostealer Advertised on Underground Forums

Rapid7 Labs has identified a new malware-as-a-service information stealer being actively promoted through Telegram channels and on underground hacker forums. The stealer is advertised under the name “SantaStealer” and is planned to be released before the end of 2025. Open Read More …