Incident Score: Analysis & Impact (NOTETASOC1775515562)

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 targeting Irec SAS, the French subsidiary of online ticketing platform Vivaticket and External Remote Services (T1133) with moderate to high confidence (70%), supported by evidence indicating disrupted online reservations for nearly 3,500 museums, monuments, and cultural sites. Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate confidence (50%), supported by evidence indicating ransomHouse ransomware operation claimed responsibility. Under the Credential Access tactic, the analysis identified Cloud Instance Metadata API (T1552.005) with lower confidence (40%), supported by evidence indicating account metadata, login timestamps compromised. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating stolen data included full names, purchase histories, reservation details, email addresses and Data from Information Repositories: Confluence (T1213.001) with moderate confidence (60%), supported by evidence indicating online ticketing platform data compromised. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating ransomHouse listed Irec on its leak site and asserted that stolen data was exfiltrated. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with moderate confidence (50%), supported by evidence indicating ransomware attack disrupted online reservations and Defacement: Internal Defacement (T1491.001) with lower confidence (40%), supported by evidence indicating some ticketing services and organizational platforms remain unavailable. Under the Command and Control tactic, the analysis identified Application Layer Protocol: Web Protocols (T1071.001) with moderate confidence (60%), supported by evidence indicating ransomHouse ransomware operation claimed responsibility for data exfiltration. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.