TA551

Executive Summary

TA551, also known as GOLD CABIN or Shathak, is a financially motivated cyber threat group active since at least 2018. They primarily distribute email-based malware targeting individuals in English, German, Italian, and Japanese speaking countries, with campaigns linked to financial gain.

Goals & Targeting

TA551's primary goal is financial gain through stealing sensitive information for fraudulent activities. They target sectors with high financial transaction volumes or valuable personal data, focusing on individuals in specific countries based on language preferences, suggesting a strategic approach to maximize their attack success rate.

TA551 operates as a financially motivated cybercriminal group known for sophisticated email-based malware campaigns. The group leverages various techniques such as standard encoding, domain generation algorithms, and malicious files to distribute their payloads. TA551 has been associated with several malware families including Ursnif, IcedID, Valak, and QakBot, which are typically used to steal financial information from targeted individuals.

Key Capabilities

• Email-based malware distribution
• Sophisticated encoding techniques
• Domain generation algorithms
• Use of known malware families

MITRE ATT&CK Tactics

ATT&CK Techniques

Software / Tooling

Campaigns & Victims

TA551 is known for long-term campaigns targeting individuals across multiple countries. Their operations involve sending malicious emails with attachments such as macros, scripts, or documents that execute malware upon opening. Recent campaigns include the use of Phosphorus botnet capabilities, enhancing their ability to steal banking credentials and other sensitive data.

IOC Patterns

• Email-based spear-phishing campaigns
• Malicious links leading to credential theft pages
• Use of DGAs for C2 infrastructure
• Distribution via macro-laced Office documents

Recommended Actions

• Implement multi-layered email filtering solutions
• Monitor for suspicious scripts and macros in emails
• Educate users on phishing and malicious attachments
• Regularly update endpoint protection tools

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