Pewcrypt

MITRE ATT&CK does not currently catalogue Pewcrypt, 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: pewcrypt executes malicious commands via PowerShell scripts to stage attacks.

   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: pewcrypt adds malicious registry run keys to ensure 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.

3. T1685 Disable or Modify Tools Defense Impairment

   What they do: pewcrypt disables antivirus tools by terminating security processes and modifying system settings.

   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. T1027 Obfuscated Files or Information Stealth

   What they do: pewcrypt obfuscates its malware binaries to evade signature-based detection.

   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.

5. T1070.004 File Deletion Stealth

   What they do: pewcrypt deletes Volume Shadow Copies and backup files to prevent recovery.

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

6. T1057 Process Discovery Discovery

   What they do: pewcrypt discovers running processes to identify critical services for disruption.

   What that means: Adversaries may attempt to get information about running processes on a system.

7. T1486 Data Encrypted for Impact Impact

   What they do: pewcrypt encrypts victim files using a custom ransomware payload to hold data hostage.

   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.

8. T1490 Inhibit System Recovery Impact

   What they do: pewcrypt runs commands to inhibit system recovery processes after encryption.

   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.