Trojan.Win32.Waldek

Parent class: TrojWare

Trojans are malicious programs that perform actions which are not authorized by the user: they delete, block, modify or copy data, and they disrupt the performance of computers or computer networks. Unlike viruses and worms, the threats that fall into this category are unable to make copies of themselves or self-replicate. Trojans are classified according to the type of action they perform on an infected computer.

Class: Trojan

A malicious program designed to electronically spy on the user’s activities (intercept keyboard input, take screenshots, capture a list of active applications, etc.). The collected information is sent to the cybercriminal by various means, including email, FTP, and HTTP (by sending data in a request).

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Platform: Win32

Win32 is an API on Windows NT-based operating systems (Windows XP, Windows 7, etc.) that supports execution of 32-bit applications. One of the most widespread programming platforms in the world.

Description

Trojan.Win32.Waldek is a multifunctional Trojan with a modular architecture. Also known as Gootkit and XswKit. The main logic of the Trojan is written in JavaScript (JS) and is run in the context of Node.js, which allows running JS code outside of a browser. The Trojan itself, which is large (approximately 5 MB) due to the built-in JS interpreter, is downloaded by a smaller loader Trojan-Downloader.Win32.Gootkit distributed via the Angler EK exploit pack. Functionality of the Trojan is aimed at stealing banking information and depends on which modules are installed:

• spyware module – used for remote control and observation (such as taking screenshots, getting a list of running processes, stopping a process, starting VNC access, and performing web injects)
• fs module – used for accessing the file system
• cmdterm module – used for running batch commands

Top 10 countries with most attacked users (% of total attacks)

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