Incident Score: Analysis & Impact (MED1773772525)

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 (60%), supported by evidence indicating detected a ransomware attack on its computer systems and External Remote Services (T1133) with moderate confidence (50%), supported by evidence indicating offers in-person and telehealth services, including a patient portal. Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate to high confidence (70%), supported by evidence indicating bEAST ransomware group later claimed responsibility. Under the Persistence tactic, the analysis identified Valid Accounts (T1078) with moderate confidence (50%), supported by evidence indicating patient portal for virtual visits and billing. Under the Privilege Escalation tactic, the analysis identified Exploitation for Privilege Escalation (T1068) with moderate confidence (50%), supported by evidence indicating 400 GB of sensitive information exfiltrated. Under the Defense Evasion tactic, the analysis identified Obfuscated Files or Information (T1027) with moderate to high confidence (80%), supported by evidence indicating bEAST ransomware group encrypted the organization’s data and Data Encrypted for Impact (T1486) with high confidence (90%), supported by evidence indicating data encryption by ransomware. Under the Credential Access tactic, the analysis identified Credentials from Password Stores (T1555) with moderate confidence (60%), supported by evidence indicating patient medical records and PII compromised. Under the Discovery tactic, the analysis identified Account Discovery (T1087) with moderate to high confidence (70%), supported by evidence indicating 21,430 people impacted, including names, DOB, addresses. Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (90%), supported by evidence indicating 400 GB of sensitive information exfiltrated and Data from Information Repositories (T1213) with moderate to high confidence (80%), supported by evidence indicating patient medical records compromised. Under the Command and Control tactic, the analysis identified Application Layer Protocol (T1071) with moderate to high confidence (70%), supported by evidence indicating data posted on the dark web. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating 400 GB of data posted on the dark web. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with high confidence (90%), supported by evidence indicating bEAST ransomware group encrypted the organization’s data. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.