Summary
This document is a technical report that outlines the use of passive DNS monitoring as a critical tool for cybersecurity professionals in the financial sector. It describes how threat actors deploy ransomware through multiple IP addresses to evade detection. The report explains the importance of monitoring command and control (C&C) infrastructure, which is essential for successful cyber attacks. It details how passive DNS can provide valuable insights by tracking domain names associated with malicious IP addresses, thereby helping to thwart attacks. The report also emphasizes the role of passive DNS in providing context for IP addresses and aiding in the attribution of C&C infrastructure. Additionally, it discusses how threat intelligence teams can utilize passive DNS data to identify bad actor IP addresses and enhance their investigative capabilities. The document concludes with a call for financial organizations to adopt advanced cyber threat intelligence tools to better protect against evolving cyber threats.
