All attack reports

This analysis discusses the emergence of a new macOS malware family called 'Cuckoo Stealer', which acts as an infostealer and spyware. It describes Cuckoo Stealer's main features, logic, and provides indicators of compromise to assist threat hunters and defenders. The malware employs techniques lik…

This comprehensive analysis provides a thorough examination of the REMCOS Remote Access Trojan (RAT), a prominent malware threat that gained significant prevalence in 2024. The analysis delves into the malware's configuration structure, command and control capabilities, persistence mechanisms, and …

A recent surge of malicious JavaScript code has been observed targeting websites using vulnerable versions of the LiteSpeed Cache plugin for WordPress. The malware injects code into critical WordPress files or the database, creating unauthorized admin users like 'wpsupp-user.' It exploits the vulne…

This intelligence report details a sophisticated infection chain that culminates in the deployment of AsyncRAT, a potent malware designed to breach computer systems and steal confidential data. The meticulous analysis unravels the intricate sequence, commencing with a spam email containing a malici…

The CERT Polska team is investigating a large-scale malware campaign carried out by the Russian intelligence group APT28, which has been targeting Polish government institutions in the past year and is believed to be linked to the GRU.

Amid the rise of bootkits at the time, a dropper was captured in-the-wild and posted on a malware tracker. The malware was called "Guntior", named after the device object its authors had chosen for it (\Device\Guntior). The name also appears in AV detections.

This report details the analysis of a malspam campaign utilizing the Matanbuchus loader, which involved decrypting strings within the malware through emulation techniques. The investigation pivoted to uncover a Russian bulletproof hosting service, Proton66 OOO, that currently hosts various maliciou…

This report details the operation of the zEus stealer malware, which is distributed through a crafted Minecraft source pack. The malware collects sensitive information from victims' systems, including login credentials, browser data, and cryptocurrency wallets. It employs anti-analysis techniques a…

This report examines a malware strain distributed to web servers in South Korea that redirects users to an illegal gambling site. The threat actor installed a Meterpreter backdoor, a port forwarding tool, and an IIS module malware on a compromised web server. The IIS module inspects HTTP headers an…

Security researchers have discovered a campaign distributing RemcosRAT through a sophisticated infection chain involving steganography techniques. The attack starts with a malicious Word document exploiting template injection, leading to the download of an RTF file that leverages an equation editor…

HijackLoader, also known as IDAT Loader, is a modular malware loader capable of executing multiple payloads. It utilizes a variety of modules for code injection, execution, and evasion techniques. This report analyzes the updated version of HijackLoader, which includes new modules for bypassing Win…

This analysis delves into the continuous distribution of malicious shortcut files (*.LNK) targeting South Korean users, particularly those related to North Korea. These LNK files contain legitimate documents, script code, and encoded malware data. When executed, they create and run a document file …