ValenciaLeaks

MITRE ATT&CK does not currently catalogue ValenciaLeaks, so this is our assessment of the techniques it uses, drawn from public reporting. The techniques themselves, and every "what that means" definition below, come from MITRE ATT&CK v19.2. Confidence: medium. Treat it as orientation, not attribution.

1. T1059.001 PowerShell Execution

   What they do: ValenciaLeaks executes malicious payloads using PowerShell scripts to stage ransomware deployment across compromised systems.

   What that means: Adversaries may abuse PowerShell commands and scripts for execution.

2. T1106 Native API Execution

   What they do: ValenciaLeaks leverages native Windows API calls to interact with system components during initial execution phases.

   What that means: Adversaries may interact with the native OS application programming interface (API) to execute behaviors.

3. T1112 Modify Registry PersistenceDefense Impairment

   What they do: ValenciaLeaks modifies Windows Registry Run Keys to establish persistence and ensure recurring execution after reboots.

   What that means: Adversaries may interact with the Windows Registry as part of a variety of other techniques to aid in defense evasion, persistence, and execution.

4. T1685 Disable or Modify Tools Defense Impairment

   What they do: ValenciaLeaks disables security tools by modifying Windows Defender and AV processes to prevent detection and recovery.

   What that means: Adversaries may disable, degrade, or tamper with security tools or applications (e.g., endpoint detection and response (EDR) tools, intrusion detection systems (IDS), antivirus, logging agents, sensors, etc.) to impair or reduce visibility of defensive capabilities.

5. T1027.013 Encrypted/Encoded File Stealth

   What they do: ValenciaLeaks encodes ransom notes and payload components using custom encryption to evade signature-based detection.

   What that means: Adversaries may encrypt or encode files to obfuscate strings, bytes, and other specific patterns to impede detection.

6. T1070.004 File Deletion Stealth

   What they do: ValenciaLeaks deletes Volume Shadow Copies and backup directories using built-in Windows commands to ensure data recovery is impossible.

   What that means: Adversaries may delete files left behind by the actions of their intrusion activity.

7. T1021.002 SMB/Windows Admin Shares Lateral Movement

   What they do: ValenciaLeaks moves laterally via SMB/Windows Admin Shares to access additional networked systems within victim environments.

   What that means: Adversaries may use Valid Accounts to interact with a remote network share using Server Message Block (SMB).

8. T1486 Data Encrypted for Impact Impact

   What they do: ValenciaLeaks encrypts victim files using strong symmetric encryption algorithms targeting critical business and operational data.

   What that means: Adversaries may encrypt data on target systems or on large numbers of systems in a network to interrupt availability to system and network resources.

9. T1490 Inhibit System Recovery Impact

   What they do: ValenciaLeaks executes system shutdown commands and service termination scripts to cripple operational continuity.

   What that means: Adversaries may delete or remove built-in data and turn off services designed to aid in the recovery of a corrupted system to prevent recovery.

10. T1491.001 Internal Defacement Impact

    What they do: ValenciaLeaks displays defaced internal web content and system interfaces to demonstrate impact and pressure victims into payment.

    What that means: An adversary may deface systems internal to an organization in an attempt to intimidate or mislead users, thus discrediting the integrity of the systems.