Incident Score: Analysis & Impact (PROCLO1781871843)

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%), supported by evidence indicating cVE-2023-3519 (Citrix NetScaler RCE), CVE-2023-4966 (Citrix Bleed) and Valid Accounts (T1078) with moderate to high confidence (80%), supported by evidence indicating credential theft targeting salted DPAPI-encrypted Veeam backups. Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate to high confidence (80%), supported by evidence indicating rust-based Windows and Linux/ESXi encryptors deployed and Command and Scripting Interpreter (T1059) with moderate to high confidence (70%), supported by evidence indicating use of PsKill to disable endpoint defenses. Under the Persistence tactic, the analysis identified Valid Accounts (T1078) with moderate to high confidence (80%), supported by evidence indicating legitimate remote access tools (AnyDesk, ScreenConnect, TeamViewer). Under the Privilege Escalation tactic, the analysis identified Exploitation for Privilege Escalation (T1068) with moderate to high confidence (70%), supported by evidence indicating exploitation of CVE-2023-3519, CVE-2023-4966 for RCE. Under the Defense Evasion tactic, the analysis identified Obfuscated Files or Information (T1027) with high confidence (90%), supported by evidence indicating rust-based encryptors for cross-platform evasion, Impair Defenses: Disable or Modify Tools (T1562.001) with moderate to high confidence (80%), supported by evidence indicating psKill used to disable endpoint defenses, and Masquerading (T1036) with moderate to high confidence (80%), supported by evidence indicating legitimate tools (CobaltStrike, AnyDesk) blended into IT activity. Under the Credential Access tactic, the analysis identified Credentials from Password Stores (T1555) with moderate to high confidence (80%), supported by evidence indicating credential theft targeting salted DPAPI-encrypted Veeam backups. Under the Discovery tactic, the analysis identified File and Directory Discovery (T1083) with moderate to high confidence (70%), supported by evidence indicating linux/ESXi encryptor distinguishes local disks from network shares. Under the Lateral Movement tactic, the analysis identified Exploitation of Remote Services (T1210) with moderate to high confidence (80%), supported by evidence indicating exploitation of Citrix, WhatsUp Gold vulnerabilities for RCE and Remote Services: Remote Desktop Protocol (T1021.001) with moderate to high confidence (70%), supported by evidence indicating use of AnyDesk, ScreenConnect, TeamViewer for remote access. Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (90%), supported by evidence indicating data exfiltrated via rclone and 7-Zip before encryption. Under the Command and Control tactic, the analysis identified Ingress Tool Transfer (T1105) with moderate to high confidence (80%), supported by evidence indicating legitimate tools (CobaltStrike) used for C2 and Application Layer Protocol (T1071) with moderate to high confidence (70%), supported by evidence indicating use of remote access tools (AnyDesk, TeamViewer) for C2. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating data exfiltrated via rclone and 7-Zip; double extortion tactic. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with high confidence (100%), supported by evidence indicating rust-based encryptors for Windows/Linux/ESXi; partial encryption and Inhibit System Recovery (T1490) with moderate to high confidence (80%), supported by evidence indicating windows variant targets Veeam backup deployments. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.