Incident Score: Analysis & Impact (EXC1778862513)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Excelas's Ransomware 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 Excelas 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 Excelas breach identified under incident ID EXC1778862513.
The analysis begins with a detailed overview of Excelas's information like the linkedin page: https://www.linkedin.com/company/excelas1, the number of followers: 838, the industry type: Law Practice and the number of employees: 23 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 750 and after the incident was 637 with a difference of -113 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 Excelas and their customers.
On 23 January 2026, Excelas disclosed Data Breach, Ransomware issues under the banner "Excelas Data Breach Exposes Sensitive Medical and Personal Information".
Shamis & Gentile P.A.
The disruption is felt across the environment, and exposing Sensitive personally identifiable information (PII) and protected health information (PHI).
Formal response steps have not been shared publicly yet.
The case underscores how Ongoing.
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 Exploit Public-Facing Application (T1190) with moderate confidence (50%), supported by evidence indicating unauthorized access to Excelas’ systems between November 27 and December 3, 2025 and External Remote Services (T1133) with moderate confidence (60%), supported by evidence indicating cL0P ransomware group claimed responsibility for the attack. Under the Credential Access tactic, the analysis identified OS Credential Dumping (T1003) with moderate to high confidence (70%), supported by evidence indicating access to files containing sensitive PII and PHI (e.g., SSNs, medical records) and Unsecured Credentials: Credentials In Files (T1552.001) with moderate confidence (60%), supported by evidence indicating exposed data includes insurance details and payment data. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating files containing sensitive PII and PHI were accessed and Data from Information Repositories (T1213) with moderate to high confidence (70%), supported by evidence indicating excelas serves healthcare organizations, insurers, and medical corporations. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating cL0P ransomware group publicly posted about the breach on the dark web and Transfer Data to Cloud Account (T1537) with moderate confidence (60%), supported by evidence indicating data exfiltration confirmed in ransomware details. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with moderate confidence (50%), supported by evidence indicating incident type listed as Ransomware and Defacement: Internal Defacement (T1491.001) with lower confidence (40%), supported by evidence indicating cL0P ransomware group claimed responsibility. Under the Defense Evasion tactic, the analysis identified Indicator Removal: Clear Windows Event Logs (T1070.001) with moderate confidence (50%), supported by evidence indicating unauthorized access occurred over 6 days before detection and Hide Artifacts: Hidden Files and Directories (T1564.001) with moderate confidence (60%), supported by evidence indicating cL0P ransomware group known for stealthy operations. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Excelas Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/excelas1/incident/EXC1778862513
- Excelas CyberSecurity Rating page: https://www.rankiteo.com/company/excelas1
- Excelas Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/exc1778862513-excelas-ransomware-november-2025/
- Excelas CyberSecurity Score History: https://www.rankiteo.com/company/excelas1/history
- Excelas CyberSecurity Incident Source: https://www.claimdepot.com/investigations/excelas-data-breach-2026
- 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