Data Exfiltration Incident: 5,000 Files Compromised and Deleted

A recent cyberattack resulted in the deletion of 5,000 files from a company, raising significant concerns about data recovery and exfiltration. The threat actor compressed the stolen files into archives for upload before deleting them from the system. The incident highlights the challenges in identifying what data was accessed and exfiltrated, particularly due to limitations in operating system logging and potential tampering by the attacker. Memory forensics emerged as a crucial tool for investigation, revealing that over 80,000 artifacts remained in memory, including file names and paths, despite the deletion of files from disk. The ability to recover sensitive information, such as passwords and command histories, underscores the importance of timely memory capture during incidents. Organizations are encouraged to implement proactive measures, such as enhanced logging policies, to improve visibility into file access activities. This incident serves as a reminder of the complexities involved in incident response and data recovery.

Key Points: • 5,000 files were deleted during a cyberattack, complicating data recovery efforts. • Memory forensics revealed over 80,000 artifacts, aiding in identifying exfiltrated files. • Proactive logging policies are essential for improving visibility into file access during incidents.