Lechiffre

MITRE ATT&CK does not currently catalogue Lechiffre, 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: low. Treat it as orientation, not attribution.

1. T1059.001 PowerShell Execution

   What they do: lechiffre uses PowerShell scripts to execute malicious commands and propagate payloads across compromised systems.

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

2. T1685 Disable or Modify Tools Defense Impairment

   What they do: lechiffre disables antivirus tools by terminating security processes and modifying system configurations 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.

3. T1070.004 File Deletion Stealth

   What they do: lechiffre deletes Volume Shadow Copies and backup directories via vssadmin and file deletion commands to prevent recovery.

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

4. T1135 Network Share Discovery Discovery

   What they do: lechiffre discovers network shares using net view and similar commands to identify additional targets for encryption.

   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.

5. T1486 Data Encrypted for Impact Impact

   What they do: lechiffre encrypts victim files using a custom ransomware algorithm, locking data for extortion 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.

6. T1490 Inhibit System Recovery Impact

   What they do: lechiffre invokes system shutdown scripts and service termination commands to inhibit recovery attempts and maximize impact.

   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.