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TrendAI Security Blog

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Exploits & Zero-Days
Proactive Security Insights for SharePoint Attacks (CVE-2025-53770 and CVE-2025-53771)

CVE-2025-53770 and CVE-2025-53771 are vulnerabilities in on-premise Microsoft SharePoint Servers that evolved from previously patched flaws, allowing unauthenticated remote code execution through advanced deserialization and ViewState abuse.

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Malware
Back to Business: Lumma Stealer Returns with Stealthier Methods

Lumma Stealer has re-emerged shortly after its takedown. This time, the cybergroup behind this malware appears to be intent on employing more covert tactics while steadily expanding its reach. This article shares the latest methods used to propagate this threat.

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Cyber threats
Fake CAPTCHA Attacks Deploy Infostealers and RATs in a Multistage Payload Chain

We have detected a new tactic involving fake CAPTCHA pages that trick users into executing harmful commands in Windows. This scheme uses disguised files sent via phishing and other malicious methods.

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Exploits & Zero-Days APTs Cyber espionage
ZDI-CAN-25373: Windows Shortcut Exploit Abused as Zero-Day in Widespread APT Campaigns

Trend Zero Day Initiative™ (ZDI) uncovered both state-sponsored and cybercriminal groups extensively exploiting ZDI-CAN-25373 (aka ZDI-25-148), a Windows .lnk file vulnerability that enables hidden command execution.

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Invisible Prompt Injection: A Threat to AI Security

This article explains the invisible prompt injection, including how it works, an attack scenario, and how users can protect themselves.

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Game of Emperor: Unveiling Long Term Earth Estries Cyber Intrusions

Since 2023, APT group Earth Estries has aggressively targeted key industries globally with sophisticated techniques and new backdoors, like GHOSTSPIDER and MASOL RAT, for prolonged espionage operations.

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Deepfakes
A Deepfake Scammed a Bank out of $25M — Now What?

A finance worker in Hong Kong was tricked by a deepfake video conference. The future of defending against deepfakes is as much as human challenge as a technological one.

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Lemon Group’s Cybercriminal Businesses Built on Preinfected Devices

An overview of the Lemon Group’s use of preinfected mobile devices, and how this scheme is potentially being developed and expanded to other internet of things (IoT) devices. This research was presented in full at the Black Hat Asia 2023 Conference in Singapore in May 2023.

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New Golang Ransomware Agenda Customizes Attacks

A new piece of ransomware written in the Go language has been targeting healthcare and education enterprises in Asia and Africa. This ransomware is called Agenda and is customized per victim.

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Ransomware & extortion
Ransomware Actor Abuses Genshin Impact Anti-Cheat Driver to Kill Antivirus

We investigate mhyprot2.sys, a vulnerable anti-cheat driver for the popular role-playing game Genshin Impact. The driver is currently being abused by a ransomware actor to kill antivirus processes and services for mass-deploying ransomware.

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