Ranzy

MITRE ATT&CK does not currently catalogue Ranzy, 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: ranzy uses PowerShell scripts to execute malicious commands and deploy payloads across compromised systems.

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

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

   What they do: ranzy modifies Registry Run Keys to establish persistence by launching ransomware 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.

3. T1685 Disable or Modify Tools Defense Impairment

   What they do: ranzy disables security tools like antivirus software to evade detection and ensure ransomware execution.

   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.

4. T1070.004 File Deletion Stealth

   What they do: ranzy deletes Volume Shadow Copies and backup files via vssadmin to prevent data recovery.

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

5. T1135 Network Share Discovery Discovery

   What they do: ranzy performs network share discovery to identify accessible SMB shares for lateral movement and data targeting.

   What that means: Adversaries may look for folders and drives shared on remote systems as a means of identifying sources of information to gather as a precursor for Collection and to identify potential systems of interest for Lateral Movement.

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

   What they do: ranzy leverages SMB/Windows Admin Shares for lateral movement between networked hosts.

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

7. T1041 Exfiltration Over C2 Channel Exfiltration

   What they do: ranzy exfiltrates stolen victim data over encrypted C2 channels before deploying ransomware.

   What that means: Adversaries may steal data by exfiltrating it over an existing command and control channel.

8. T1486 Data Encrypted for Impact Impact

   What they do: ranzy encrypts victim files using strong symmetric encryption to maximize impact and trigger ransom demands.

   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.

Software Ranzy has been seen using, grouped by what it is used for. Legitimate administration tools appear here because these actors routinely abuse them — presence in this list is not itself malicious.

Tool data from Ransomware Tool Matrix by BushidoUK, licensed CC BY 4.0. Grouped by purpose and matched to this group by Breach House.

The note this group leaves on a compromised machine. Click a filename to read it.

Your servers is LOCKED. Do not try to use other software.
You can contact us directly for further instructions through emails:
 
[email protected]
[email protected]
 
In subject write your key (below).
 
Recovery information:
key: {PATTERN_ID}
personal id: {UID}

Ransom-note text from RansomLook, licensed CC BY 4.0.