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Silent Threat: Red Team Tool EDRSilencer Disrupting Endpoint Security Solutions

Trend Micro's Threat Hunting Team has observed EDRSilencer, a red team tool that threat actors are attempting to abuse for its ability to block EDR traffic and conceal malicious activity.

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Earth Simnavaz (aka APT34) Levies Advanced Cyberattacks Against Middle East

Trend Micro's investigation into the recent activity of Earth Simnavaz provides new insights into the APT group’s evolving tactics and the immediate threat it poses to sectors in the Middle East.

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Cryptojacking via CVE-2023-22527: Dissecting a Full-Scale Cryptomining Ecosystem

A technical analysis on how CVE-2023-22527 can be exploited by malicious actors for cryptojacking attacks that can spread across the victim’s system.

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Behind the Great Wall: Void Arachne Targets Chinese-Speaking Users With the Winos 4.0 C&C Framework

We recently discovered a new threat actor group that we dubbed Void Arachne. This group targets Chinese-speaking users with malicious Windows Installer (MSI) files in a recent campaign. These MSI files contain legitimate software installer files for AI software and other popular software but are bundled with malicious Winos payloads.

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Agenda Ransomware Propagates to vCenters and ESXi via Custom PowerShell Script

This blog entry discusses the Agenda ransomware group's use of its latest Rust variant to propagate to VMWare vCenter and ESXi servers.

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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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CVE-2023-36025 Exploited for Defense Evasion in Phemedrone Stealer Campaign

This blog delves into the Phemedrone Stealer campaign's exploitation of CVE-2023-36025, the Windows Defender SmartScreen Bypass vulnerability, for its defense evasion and investigates the malware's payload.

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Exploits & Zero-Days
CVE-2023-46604 (Apache ActiveMQ) Exploited to Infect Systems With Cryptominers and Rootkits

We uncovered the active exploitation of the Apache ActiveMQ vulnerability CVE-2023-46604 to download and infect Linux systems with the Kinsing malware (also known as h2miner) and cryptocurrency miner.

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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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Iron Tiger’s SysUpdate Reappears, Adds Linux Targeting

We detail the update that advanced persistent threat (APT) group Iron Tiger made on the custom malware family SysUpdate. In this version, we also found components that enable the malware to compromise Linux systems.

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