Incident Score: Analysis & Impact (PER1782843975)

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 the dealership’s network was identified and Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating qilin ransomware group claimed responsibility for the intrusion. Under the Credential Access tactic, the analysis identified Credentials from Password Stores (T1555) with moderate to high confidence (70%), supported by evidence indicating 60 GB of data exfiltrated, including SSNs and driver’s licenses and OS Credential Dumping (T1003) with moderate confidence (60%), supported by evidence indicating pII and PHI compromised, suggesting access to sensitive systems. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating 60 GB of data exfiltrated, including full names, SSNs, and health records and Data from Information Repositories (T1213) with moderate to high confidence (70%), supported by evidence indicating compromised files contained PII and PHI. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating qilin asserted it had exfiltrated 60 GB of data and Exfiltration Over Web Service (T1567) with moderate confidence (60%), supported by evidence indicating threatened to release the full dataset on March 11, 2025. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with moderate to high confidence (80%), supported by evidence indicating ransomware attack attributed to Qilin ransomware group and Defacement (T1491) with moderate confidence (50%), supported by evidence indicating qilin claimed responsibility via a post on the Tor network. Under the Defense Evasion tactic, the analysis identified Obfuscated Files or Information (T1027) with moderate confidence (60%), supported by evidence indicating ransomware attack detected after unauthorized access and Hide Artifacts (T1564) with moderate confidence (50%), supported by evidence indicating investigation concluded over 15 months after initial intrusion. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.