These keys are stored on a remote server controlled by cyber criminals. Therefore, unique keys are generated during the encryption process. PowerShell employs RSA-2048 and AES-128 encryption algorithms. The HTML file informs victims of the encryption and encourages them to visit a Tor website. Screenshot of files encrypted by PowerShell ransomware: After the encryption is complete, an HTML file (" _README-Encrypted-Files.html") is dropped onto the desktop. Unlike other ransomware, this program does append files with any extensions. js file is a PowerShell script that infects the system.įollowing successful infiltration, PowerShell encrypts data to demand payment for the decryption. js file that is compressed twice (zip within a zip). It has been observed being distributed via spam emails (e.g., fake Delivery Status Notification, etc.). Discovered by malware security researcher SecGuru, PowerShell is a ransomware-type program.
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