Incident Score: Analysis & Impact (CHI1782751972)

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 hacking-related breach affecting 1,525 patients and Valid Accounts (T1078) with high confidence (90%), supported by evidence indicating insider breach involving unauthorized access by a single employee. Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate confidence (60%), supported by evidence indicating ransomware attack by the threat group Kairos. Under the Credential Access tactic, the analysis identified Valid Accounts: Local Accounts (T1078.003) with high confidence (90%), supported by evidence indicating insider breach such as employee accessed records without authorization. Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (90%), supported by evidence indicating 45 GB of sensitive data exfiltrated, including PII/PHI and Data from Information Repositories (T1213) with moderate to high confidence (80%), supported by evidence indicating patient records accessed such as names, SSNs, medical histories. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (80%), supported by evidence indicating kairos claimed to have exfiltrated 45 GB of sensitive data and Transfer Data to Cloud Account (T1537) with moderate confidence (50%), supported by evidence indicating data published on dark web leak site after ransom unpaid. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with lower confidence (40%), supported by evidence indicating ransomware attack by Kairos (implied encryption) and Defacement: Internal Defacement (T1491.001) with lower confidence (30%), supported by evidence indicating data published on dark web leak site. Under the Defense Evasion tactic, the analysis identified Valid Accounts: Local Accounts (T1078.003) with moderate to high confidence (80%), supported by evidence indicating insider breach such as employee evaded detection for 5 months. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.