Tag: anti-analysis

This analysis focuses on a watering hole attack targeting a Japanese university research laboratory website in 2023. The attack used social engineering to trick users into downloading and executing malware disguised as an Adobe Flash Player update. The malware, identified as a modified Cobalt Strik…

Raspberry Robin, a malicious downloader discovered in 2021, has been circulating for years, primarily spreading through infected USB devices. It stands out due to its unique binary-obfuscation techniques, extensive use of anti-analysis methods, and privilege escalation exploits. The malware uses mu…

A new keylogger, attributed to the North Korean group Andariel (APT45), has been linked to targeted attacks against U.S. organizations. The malware captures keystrokes and mouse activity, storing data in an encrypted archive. It employs anti-analysis techniques like code obfuscation through junk co…

This report delves into an analysis of CoreWarrior, a persistent trojan designed for rapid propagation. It creates multiple copies of itself, attempts connections to various IP addresses, opens backdoor access, and hooks Windows UI elements for monitoring purposes. The malware employs techniques li…

A new malware called Vilsa Stealer has emerged on GitHub, notable for its speed and efficiency in extracting sensitive data. This sophisticated tool targets browser credentials, tokens, and various application data. It supports major browsers and over 40 crypto wallets, using Python as its programm…

Zharkbot is a C++ downloader with extensive anti-analysis and anti-sandbox features. It uses in-line string encryption and API calls, making static and emulation analysis challenging. The malware performs sandbox detection by checking for specific usernames and hypervisors. It installs itself in th…

This analysis revisits the anti-analysis techniques employed by recent variants of the Play ransomware, which is known for targeting industries like healthcare and telecommunications across various regions. The report explains how the ransomware utilizes techniques like return-oriented programming …

This analysis delves into a DarkGate malware campaign from March-April 2024 that exploits Microsoft Excel files to retrieve malicious payloads hosted on public-facing SMB file shares. It sheds light on the evolving tactics of this threat, which creatively abuses legitimate tools and services for di…

This article demonstrates how to circumvent anti-analysis techniques employed by GootLoader malware while utilizing Node.js debugging in Visual Studio Code. GootLoader JavaScript files employ an evasion technique that can pose a formidable challenge for sandboxes attempting to analyze the malware. …

This comprehensive analysis delves into the continuous evolution and refinement of sophisticated malware entities employed by a persistent cyberespionage group targeting organizations in the Asia-Pacific region. The malware, known as Waterbear and its latest iteration, Deuterbear, have undergone si…

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…

Zloader (a.k.a. Terdot, DELoader, or Silent Night) is a modular trojan based on leaked ZeuS source code. Zloader has continued to evolve since its resurrection around September 2023 after an almost two-year hiatus. The latest version, 2.4.1.0, introduces a feature to prevent execution on machines t…

This in-depth analysis examines Fletchen stealer, an advanced information-stealing malware featuring potent anti-analysis capabilities. It explores the malware's tactics for data harvesting from compromised systems, exfiltration methods, and measures to evade detection. The report emphasizes the dy…