Full Report
A new Snake Keylogger variant, responsible for over 280 million blocked infection attempts worldwide, has been identified targeting Windows users
Analysis Summary
# Tool/Technique: Snake Keylogger Variant
## Overview
A new, highly sophisticated variant of the Snake Keylogger malware designed to steal sensitive user data from Windows systems, including credentials, browser information, and clipboard contents.
## Technical Details
- Type: Malware family
- Platform: Windows
- Capabilities: Data exfiltration (credentials, browser data, clipboard data), Obfuscation, Persistence, Keylogging, Process Injection.
- First Seen: The article references research published around February 18, 2025.
## MITRE ATT&CK Mapping
- TA0001 - Initial Access
- T1566 - Phishing
- T1566.001 - Spearphishing Attachment (Likely, given email distribution)
- TA0003 - Persistence
- T1547 - Boot or Logon Autostart Execution
- T1547.001 - Registry Run Keys / Startup Folder (Mentioned persistence mechanism)
- TA0005 - Defense Evasion
- T1055 - Process Injection
- T1055.011 - Process Hollowing
- TA0009 - Collection
- T1056 - Input Capture
- T1056.001 - Keylogging
- T1119 - Data from Local System (Implied, by stealing browser data)
- TA0010 - Exfiltration
- T1041 - Exfiltration Over C2 Channel (Implied, using SMTP/Telegram)
## Functionality
### Core Capabilities
- Stealing credentials from popular browsers (Chrome, Firefox).
- Extracting autofill details and credit card information stored in browsers.
- Capturing keystrokes.
- Monitoring clipboard activity.
- Distribution via phishing emails carrying malicious links or attachments.
### Advanced Features
- **Obfuscation:** Utilizes AutoIt scripting to hide malicious payloads, evading conventional antivirus analysis.
- **Process Hollowing:** Injects malicious code into legitimate Windows processes to execute without easy detection.
- **Resilient C2:** Exfiltrates data to command-and-control servers using encrypted channels, specifically mentioning SMTP (email) and Telegram bots.
- **Persistence:** Establishes persistence by dropping scripts into the Windows Startup folder.
## Indicators of Compromise
- File Hashes: [Not explicitly provided in the text]
- File Names: [Not explicitly provided in the text]
- Registry Keys: [Implied via Startup folder persistence mechanism, but specific keys not detailed]
- Network Indicators: SMTP endpoints, Telegram bot endpoints (defanged: smtp[.]com, telegram[.]org links/APIs)
- Behavioral Indicators: Execution of AutoIt scripts, injection into legitimate processes (process hollowing), writing scripts to the Windows Startup folder, connections to SMTP or Telegram services for exfiltration.
## Associated Threat Actors
- The article identifies the malware family generally but does not name a specific threat actor group associated with this *new variant* in the provided text (though historically, Snake Keylogger has been used by various groups).
## Detection Methods
- Signature-based detection: Effective against known hashes of variants.
- Behavioral detection: Crucial for catching obfuscated payloads and monitoring for process hollowing, keystroke logging, and suspicious file writes to the Startup folder.
- YARA rules: [Not explicitly provided in the text, but highly recommended for file-based detection of AutoIt packers/malicious payload signatures.]
## Mitigation Strategies
- Avoid opening unsolicited email attachments or clicking unknown links.
- Use antivirus software configured with robust behavior-based detection capabilities.
- Keep operating systems and all software regularly patched and up to date.
- Implement user security awareness training focused on phishing recognition.
## Related Tools/Techniques
- Other infostealers/keyloggers mentioned in related items (for context, though not explicitly related techniques): Evil Extractor, Byakugan Infostealer, Remcos RAT.
- Related technique: Use of AutoIt for obfuscation.