Marquette County Medical Care Facility Breach Incident Score: Analysis & Impact (MCM1767852088)

In this Rankiteo incident briefing, we review the Marquette County Medical Care Facility breach identified under incident ID MCM1767852088.

The analysis begins with a detailed overview of Marquette County Medical Care Facility's information like the linkedin page: https://www.linkedin.com/company/mcmcf, the number of followers: 62, the industry type: Hospitals and Health Care and the number of employees: 45 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 766 and after the incident was 703 with a difference of -63 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 Marquette County Medical Care Facility and their customers.

On 03 March 2025, Marquette County Medical Care Facility (MCMCF) disclosed Business Email Compromise (BEC) issues under the banner "Marquette County Medical Care Facility Business Email Compromise Incident".

Marquette County Medical Care Facility (MCMCF) discovered a business email compromise incident on March 3, 2025, when contacts of MCMCF’s Human Resources director began receiving phishing emails from her Microsoft Office 365 (O365) account.

The disruption is felt across the environment, affecting Microsoft Office 365 (O365) account, and exposing Names, social security numbers, dates of birth, protected health information, bank details.

In response, and stakeholders are being briefed through Dedicated toll-free helpline (1-833-998-7185, Monday through Friday, 8:00 a.m. to 8:00 p.m. EST).

The case underscores how with advisories going out to stakeholders covering Dedicated toll-free helpline provided for 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.

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 Phishing: Spearphishing Link (T1566.002) with high confidence (90%), supported by evidence indicating contacts began receiving phishing emails from the compromised account and Valid Accounts: Cloud Accounts (T1078.004) with high confidence (90%), supported by evidence indicating unauthorized access to...Human Resources director’s Microsoft Office 365 account. Under the Credential Access tactic, the analysis identified Email Collection: Remote Email Collection (T1114.002) with moderate to high confidence (80%), supported by evidence indicating business Email Compromise (BEC) incident affecting...Microsoft Office 365 account and Steal Web Session Cookie (T1539) with moderate to high confidence (70%), supported by evidence indicating compromised Microsoft Office 365 account via phishing. Under the Collection tactic, the analysis identified Email Collection: Remote Email Collection (T1114.002) with moderate to high confidence (80%), supported by evidence indicating exposed data may have included names, SSNs, PHI, bank details and Data from Information Repositories: Sharepoint (T1213.002) with moderate to high confidence (70%), supported by evidence indicating microsoft Office 365 account compromise (likely includes SharePoint/OneDrive). Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (80%), supported by evidence indicating unauthorized access to sensitive information...PHI, bank details and Transfer Data to Cloud Account (T1537) with moderate to high confidence (70%), supported by evidence indicating business Email Compromise (BEC) incident via O365 account. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (30%), supported by evidence indicating no details on malware’s origin or extent of breach and Data Manipulation: Stored Data Manipulation (T1565.001) with lower confidence (40%), supported by evidence indicating phishing emails sent from compromised account. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.