Metaencryptor

MITRE ATT&CK does not currently catalogue Metaencryptor, 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: metaencryptor uses PowerShell scripts to execute payload deployment and system modifications on compromised hosts.

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

2. T1106 Native API Execution

   What they do: metaencryptor leverages native API calls to interact with Windows services and evade behavioral detection.

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

3. T1547.001 Registry Run Keys / Startup Folder PersistencePrivilege Escalation

   What they do: metaencryptor modifies Windows Registry Run Keys to ensure malware persistence across reboots.

   What that means: Adversaries may achieve persistence by adding a program to a startup folder or referencing it with a Registry run key.

4. T1685 Disable or Modify Tools Defense Impairment

   What they do: metaencryptor disables antivirus tools and security software using registry modifications and service termination commands.

   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. T1027.016 Junk Code Insertion Stealth

   What they do: metaencryptor inserts junk code into legitimate binaries to evade static analysis and detection.

   What that means: Adversaries may use junk code / dead code to obfuscate a malware’s functionality.

6. T1070.004 File Deletion Stealth

   What they do: metaencryptor deletes Volume Shadow Copies and backup directories via command-line utilities to prevent recovery.

   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: metaencryptor moves laterally through SMB/Windows Admin Shares to access additional networked systems.

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

8. T1560.001 Archive via Utility Collection

   What they do: metaencryptor archives stolen data using utility tools prior to exfiltration for extortion leverage.

   What that means: Adversaries may use utilities to compress and/or encrypt collected data prior to exfiltration.

9. T1486 Data Encrypted for Impact Impact

   What they do: metaencryptor encrypts victim files using symmetric encryption algorithms targeting critical business 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.

10. T1490 Inhibit System Recovery Impact

    What they do: metaencryptor calls system shutdown commands to inhibit recovery processes and maximize disruption.

    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.