Cyber Incident Victim: Avalon Health Care Management
Date:
Jul 2019
Location:
United States of America
Summary
A ransomware attack compromised a healthcare provider's network, potentially exposing sensitive patient data including names, contact details, Social Security numbers, medical records, and financial information affecting over 131,000 individuals. The automated cyberattack aimed to encrypt data for financial extortion rather than explicitly stealing information, though unauthorized access remained possible. The organization immediately contained the breach by isolating infected systems, replacing central servers, and purging affected devices while engaging third-party cybersecurity experts for remediation. Security enhancements included updated antivirus software and ongoing testing of data protection measures to prevent future incidents.
| CIA Posture | Motives | Tactics, Techniques & Procedures |
|---|---|---|
| Available to members | 1 motive | 1 technique |
| Threat Actors | Type | Location |
|---|---|---|
| 0 actors | Available to members | Available to members |
Description
On January 25, 2020, a ransomware attack commenced against Brandywine Urology Consultants' network infrastructure. The intrusion was detected two days later on January 27 when administrators discovered active encryption malware operating within their systems. Practice officials immediately implemented containment protocols by isolating compromised network segments to prevent lateral movement of the attack. Subsequent forensic analysis determined the ransomware operation began on a Saturday, suggesting automated propagation rather than targeted human-operated activity. While the electronic medical record system remained unaffected, the central server and connected workstations sustained encryption impacts. Security personnel neutralized the active threat before conducting comprehensive malware scans across all systems to eradicate residual malicious components. Brandywine Urology engaged a third-party cybersecurity firm to assist with incident response and determine the attack's operational scope. Investigators concluded the ransomware variant functioned as financially motivated encryption malware designed to extort payment rather than exfiltrate sensitive data.
The incident potentially exposed protected health information belonging to 131,825 patients due to system accessibility during the encryption process. Compromised data fields included patient names, contact information, Social Security numbers, medical file identifiers, insurance claims details, and financial records. Following threat eradication, Brandywine Urology executed hardware replacements for the central server and all affected endpoints, either replacing devices or performing secure wiping and reimaging procedures. The practice isolated previously compromised servers from production environments and deployed updated antivirus solutions across the network. Continuous security enhancements were implemented through ongoing collaboration with external cybersecurity experts, including penetration testing and infrastructure hardening measures. Notification letters were dispatched to all potentially impacted patients after completion of the forensic investigation into the ransomware incident's data accessibility timeline.