Everstake

MITRE ATT&CK does not currently catalogue Everstake, 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 v20.0. Confidence: low. Treat it as orientation, not attribution.

1. T1047 Windows Management Instrumentation Execution

   What they do: everstake uses Windows Management Instrumentation for command execution and persistence.

   What that means: Adversaries may abuse Windows Management Instrumentation (WMI) to execute malicious commands and payloads.

2. T1059.001 PowerShell Execution

   What they do: everstake executes ransomware payloads via PowerShell scripts to propagate and encrypt files.

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

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

   What they do: everstake modifies Registry Run Keys to ensure malware execution on system startup.

   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: everstake disables Windows security tools like Defender and AV services to evade detection.

   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 Obfuscated Files or Information Stealth

   What they do: everstake obfuscates malware binaries and C2 communications to evade static analysis.

   What that means: Adversaries may attempt to make an executable or file difficult to discover or analyze by encrypting, encoding, or otherwise obfuscating its contents on the system or in transit.

6. T1070.004 File Deletion Stealth

   What they do: everstake deletes Volume Shadow Copies and backup directories to prevent recovery.

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

7. T1083 File and Directory Discovery Discovery

   What they do: everstake discovers files and directories using Windows API calls to target data locations.

   What that means: Adversaries may enumerate files and directories or may search in specific locations of a host or network share for certain information within a file system.

8. T1486 Data Encrypted for Impact Impact

   What they do: everstake encrypts victim files using custom symmetric encryption before demanding ransom.

   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.