Incident Score: Analysis & Impact (LUS1780770254)

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 high confidence (90%), with evidence including exploiting CVE-2024-40766 (SonicWall SSL-VPN), and exploiting unpatched Veeam Backup servers (CVE-2023-27532, CVE-2024-40711), External Remote Services (T1133) with high confidence (90%), with evidence including compromised VPN credentials, and exploiting SSH on routers, Valid Accounts (T1078) with moderate to high confidence (80%), with evidence including compromised VPN credentials, and brute-force attacks, password spraying, and Brute Force (T1110) with moderate to high confidence (80%), with evidence including brute-force attacks, and password spraying (e.g., using SharpDomainSpray). Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate to high confidence (70%), supported by evidence indicating deploying encryption payloads on Nutanix AHV platforms. Under the Persistence tactic, the analysis identified Valid Accounts (T1078) with moderate to high confidence (80%), with evidence including compromised VPN credentials, and brute-force attacks. Under the Privilege Escalation tactic, the analysis identified Exploitation for Privilege Escalation (T1068) with moderate to high confidence (70%), supported by evidence indicating exploiting vulnerabilities (CVE-2024-40766, CVE-2023-27532) and Valid Accounts (T1078) with moderate to high confidence (80%), with evidence including compromised VPN credentials, and brute-force attacks. Under the Defense Evasion tactic, the analysis identified Impair Defenses: Disable or Modify Tools (T1562.001) with moderate confidence (60%), supported by evidence indicating bypassed multi-factor authentication (MFA) in some attacks and Valid Accounts (T1078) with moderate to high confidence (80%), with evidence including compromised VPN credentials, and brute-force attacks. Under the Credential Access tactic, the analysis identified Brute Force (T1110) with high confidence (90%), with evidence including brute-force attacks, and password spraying (e.g., using SharpDomainSpray) and Modify Authentication Process: Multi-Factor Authentication (T1556.006) with moderate to high confidence (70%), supported by evidence indicating bypassed MFA by compromising one-time password seeds or generating fraudulent tokens. Under the Discovery tactic, the analysis identified Account Discovery (T1087) with moderate to high confidence (70%), supported by evidence indicating brute-force attacks and password spraying imply account discovery and File and Directory Discovery (T1083) with moderate confidence (60%), supported by evidence indicating lateral movement to Nutanix AHV platforms suggests discovery of critical systems. Under the Lateral Movement tactic, the analysis identified Exploitation of Remote Services (T1210) with high confidence (90%), with evidence including moved laterally to Nutanix AHV platforms, and exploiting vulnerabilities for access and Remote Services: Remote Desktop Protocol (T1021.001) with moderate to high confidence (70%), supported by evidence indicating compromised VPN credentials suggest RDP or similar remote access. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating business-critical and sensitive data compromised. Under the Command and Control tactic, the analysis identified Application Layer Protocol (T1071) with moderate to high confidence (70%), supported by evidence indicating ransomware operation implies C2 communication for payload delivery. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), with evidence including data exfiltration confirmed, and business-critical and sensitive data compromised. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with high confidence (100%), with evidence including deploying encryption payloads on Nutanix AHV platforms, and data encryption confirmed and Inhibit System Recovery (T1490) with moderate to high confidence (70%), supported by evidence indicating ransomware attack implies disruption of recovery mechanisms. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.