Ransomware-driven data exfiltration: techniques and implications

Category	Details
Threat Actors	Ransomware and extortion groups, including lucrative intrusion sets and state-sponsored actors.
Campaign Overview	Focus on data exfiltration to maximize financial and reputational impact, often leveraging double extortion.
Target Regions (Or Victims)	Organizations with high-value, sensitive data such as financial, personal, medical records, classified documents, and IT/network data.
Methodology	Double extortion by stealing and threatening to leak sensitive data; exfiltration without encryption is growing.
Product Targeted	Sensitive files including financial records, personal data, medical records, and IT/network information.
Malware Reference	Infostealers, Remote Access Trojans (RATs), spyware, backdoors, MaaS tools, and commodity malware.
Tools Used	Combination of custom tools (for stealth and efficiency) and publicly available tools for enumeration, compression, and uploading.
Vulnerabilities Exploited	Poor monitoring of data movement, use of legitimate tools to blend with normal operations, and lack of robust detection strategies.
TTPs	Pre-qualification of data, strategic targeting of high-value files, use of stealthy exfiltration methods, and blending with legitimate activities.
Attribution	Both financially motivated groups and state-sponsored actors, sometimes to misdirect attribution.
Recommendations	Early detection via monitoring suspicious behavior, focusing on critical files and directories, and identifying known exfiltration tools.
Source	Sekoia Blog

Read full article: https://blog.sekoia.io/ransomware-driven-data-exfiltration-techniques-and-implications/

Disclaimer: The above summary has been generated by an AI language model