Angry Stealer

Protecting your devices from malware threats is more critical than ever. Malware, or fraudulent software, can infiltrate your system, exfiltrate sensitive information and cause irreparable damage. One such sophisticated malware threat is the Angry Stealer, an information-stealing program designed to extract and exploit data from infected devices. Understanding how this malware operates and its potential impact on your security can help you better protect your digital assets.

The Origins of the Angry Stealer

The Angry Stealer is a highly sophisticated information-stealing malware, with its roots traced back to an earlier threat known as Rage Stealer. The developers of Angry have built upon the capabilities of Rage, enhancing its effectiveness and broadening its scope. Cybersecurity researchers have discovered that the codebase of Angry includes Russian language elements, suggesting that its developers are likely Russian-speaking.

This malware is promoted and sold through various online platforms, including forums and Telegram channels, allowing cybercriminals to distribute it widely. The developers' active promotion indicates a well-organized effort to spread this threat across a broad audience, increasing the risk of infection for countless users.

The Infection Chain: A Two-Pronged Attack

The infection process of the Angry Stealer involves two primary executables: Stepasha.exe and MotherRussia.exe. These files may vary in name, but their functions remain consistent.

• Stepasha.exe: This executable is the core component of Angry Stealer. Once executed, it begins the process of collecting a wide range of data from the infected device.
• MotherRussia.exe: The purpose of this executable is less clear, but it appears to be involved in creating additional custom executables. These could be used to implement remote access capabilities or further propagate the malware, deepening the infection and making it more challenging to remove.

Data Collection and Exfiltration

Once the Angry Stealer infiltrates a device, it initiates an extensive data collection process. The malware can extract a wealth of information, including:

• Device and Network Information: This includes details like device name, hardware specs (CPU, GPU, RAM), operating system version, network data (Wi-Fi networks, BSSID, ISP details), and geolocation information (IP address, country, region, city, ZIP code, coordinates, timezone).
• Application and Process Data: The Angry Stealer also targets installed applications and running processes, potentially allowing attackers to understand the software environment of the infected system.
• Browser Data: From Chromium-based and Firefox browsers, Angry Stealer can acquire browsing histories, bookmarks, cookies, auto-fill data (usernames, personal details), stored passwords, and even saved credit/debit card numbers.
• Targeted Applications: The malware extends its reach to other applications, including VPNs (NordVPN, OpenVPN, ProtonVPN), FTP clients (FileZilla), messaging platforms (Discord, Telegram) and gaming software (Steam, VimeWorld).
• Cryptocurrency Wallets: The Angry Stealer can also harvest multiple types of cryptocurrency wallets, including those for Bitcoin, Ethereum, Monero, and others, posing a significant risk to users who deal in digital currencies.
• Files and Clipboard Data: The malware can exfiltrate files based on specific formats and sizes, take screenshots, and even steal clipboard content, giving attackers access to sensitive data copied to the clipboard.

The Evolution of the Angry Stealer

Malware developers are constantly refining their creations, and the Angry Stealer is no exception. As new versions of this malware are released, they may include additional functionalities or target a broader range of applications and data. This constant evolution makes it challenging to defend against, as even systems with up-to-date security measures may be vulnerable to new variants of the Angry Stealer.

Distribution and Proliferation Tactics

The distribution of the Angry Stealer is as sophisticated as the malware itself. Cybercriminals utilize a variety of methods to spread this malware, including:

• Phishing and Social Engineering: These tactics involve tricking PC users into downloading and executing the malware, often by disguising it as legitimate software or an urgent update.
• Unsafe Downloads: Angry Stealer can be embedded in seemingly harmless files downloaded from questionable sources, such as freeware sites, P2P networks or through drive-by downloads.
• Spam Emails and Messages: Cybercriminals may distribute the malware via email attachments or links, often masquerading as crucial documents or messages.
• Pirated Content and Cracks: Malware is frequently bundled with pirated software or illegal activation tools, making users seeking free software particularly vulnerable.
• Self-Propagation: Some versions of the Angry Stealer may have the ability to spread through local networks or via removable storage devices, further increasing the risk of infection.

The Importance of Vigilance and Protection

The presence of the Angry Stealer or any similar malware on your device can lead to severe consequences, including privacy breaches, financial losses, and identity theft. It's fundamental to remain vigilant and take proactive steps to protect your systems. This includes keeping your software up-to-date, avoiding suspicious downloads, and using comprehensive security solutions to detect and remove threats.

In summary, the Angry Stealer represents a significant and evolving threat in the cybersecurity landscape. Users can better defend themselves against this and other malware threats by understanding its capabilities and distribution methods. Remember, the key to cybersecurity is not just reactive measures but proactive defense and constant vigilance.