The Snake Keylogger, also known as 404 Keylogger, has emerged as a significant threat to Windows users globally. This malware is designed to steal sensitive information by logging keystrokes, capturing credentials, and monitoring clipboard activity. The latest variant of Snake Keylogger has been responsible for over 280 million blocked infection attempts since the beginning of the year2.
Distribution and Proliferation
Snake Keylogger is typically delivered through phishing emails containing malicious attachments or links. Once a user opens the attachment or clicks the link, the malware is executed, embedding itself within the system. The use of AutoIt scripting language allows the malware to bypass traditional detection mechanisms by embedding the payload within a compiled script.
Data Collection and Transmission
Once installed, Snake Keylogger captures keystrokes and extracts credentials from popular web browsers like Chrome, Edge, and Firefox. It exfiltrates the stolen information to an attacker-controlled server using the Simple Mail Transfer Protocol (SMTP) and Telegram bots. The malware also logs sensitive input such as banking credentials by leveraging the SetWindowsHookEx API1.
Persistence and Evasion Techniques
Snake Keylogger employs advanced techniques to maintain persistence and evade detection. It drops a copy of itself in the Windows Startup folder, ensuring it is executed every time the system is rebooted. The malware also uses process hollowing to inject its payload into legitimate Windows processes, allowing it to operate undetected2.
Impact and Global Reach
The highest concentrations of Snake Keylogger infections have been reported in China, Turkey, Indonesia, Taiwan, and Spain. However, the threat remains global, with significant impacts on both individuals and organizations. The malware’s ability to steal sensitive information poses a high risk to private individuals and businesses alike3.
Mitigation and Prevention
To mitigate the risk posed by Snake Keylogger, security experts recommend the following measures:
- Email Caution: Avoid opening unsolicited email attachments or clicking unknown links.
- Updated Security Tools: Use antivirus software with behavior-based detection capabilities.
- Regular Patching: Keep operating systems and software up to date.
Proactive defenses and user awareness are crucial in combating the continuous evolution of malware threats like Snake Keylogger. By staying informed and implementing robust security measures, users can protect themselves from this persistent and evolving threat.