Incident Score: Analysis & Impact (CRM1776292293)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Cookeville Regional Medical Center's Breach and lateral movement inside company's environment.
- Overview of affected data sets, including SSNs and PHI, and why they materially increase incident severity.
- How Rankiteo’s incident engine converts technical details into a normalized incident score.
- How this cyber incident impacts Cookeville Regional Medical Center Rankiteo cyber scoring and cyber rating.
- Rankiteo’s MITRE ATT&CK correlation analysis for this incident, with associated confidence level.
Full Incident Analysis Transcript
In this Rankiteo incident briefing, we review the Cookeville Regional Medical Center breach identified under incident ID CRM1776292293.
The analysis begins with a detailed overview of Cookeville Regional Medical Center's information like the linkedin page: https://www.linkedin.com/company/crmc, the number of followers: 5607, the industry type: Hospitals and Health Care and the number of employees: 2416 employees
After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 768 and after the incident was 578 with a difference of -190 which is could be a good indicator of the severity and impact of the incident.
In the next step of the video, we will analyze in more details the incident and the impact it had on Cookeville Regional Medical Center and their customers.
On 16 March 2026, Cookeville Regional Medical Center disclosed Data Breach issues under the banner "Cookeville Regional Medical Center Data Breach Exposes Sensitive Patient Information".
Cookeville Regional Medical Center in Cookeville, Tennessee, concluded its investigation into a data breach that compromised highly sensitive patient information.
The disruption is felt across the environment, and exposing Personal and medical data, including names, addresses, dates of birth, Social Security numbers, driver’s license numbers, financial account details, medical treatment information, medical record numbers, and health insurance policy details.
In response, and stakeholders are being briefed through Began notifying affected individuals.
The case underscores how Concluded, with advisories going out to stakeholders covering Notifying affected individuals.
Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.
The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.
MITRE ATT&CK® Correlation Analysis
Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Initial Access tactic, the analysis identified Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating unauthorized party accessed and potentially exfiltrated files and Exploit Public-Facing Application (T1190) with moderate confidence (50%), supported by evidence indicating no details on attack vector, but healthcare systems often targeted. Under the Credential Access tactic, the analysis identified Unsecured Credentials (T1552) with moderate confidence (60%), supported by evidence indicating highly sensitive patient information compromised and OS Credential Dumping (T1003) with moderate confidence (50%), supported by evidence indicating social Security numbers, financial account details accessed. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating files containing personal and medical data were accessed and Data from Information Repositories (T1213) with moderate to high confidence (70%), supported by evidence indicating medical treatment information, medical record numbers compromised. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), supported by evidence indicating potentially exfiltrated files containing sensitive data and Transfer Data to Cloud Account (T1537) with moderate confidence (50%), supported by evidence indicating no details on exfiltration method, but cloud common in breaches. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (30%), supported by evidence indicating no evidence of destruction, but unauthorized access occurred and Stored Data Manipulation (T1565.001) with lower confidence (40%), supported by evidence indicating potential for identity theft and financial fraud. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Cookeville Regional Medical Center Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/crmc/incident/CRM1776292293
- Cookeville Regional Medical Center CyberSecurity Rating page: https://www.rankiteo.com/company/crmc
- Cookeville Regional Medical Center Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/crm1776292293-cookeville-regional-medical-center-breach-july-2025/
- Cookeville Regional Medical Center CyberSecurity Score History: https://www.rankiteo.com/company/crmc/history
- Cookeville Regional Medical Center CyberSecurity Incident Source: https://www.classaction.org/data-breach-lawsuits/cookeville-regional-medical-center-september-2025
- Rankiteo A.I CyberSecurity Rating methodology: https://www.rankiteo.com/Images/rankiteo_algo.pdf
- Rankiteo TPRM Scoring methodology: https://static.rankiteo.com/model/rankiteo_tprm_methodology.pdf