General

  • Target
    winrar-x64-723tr.exe
  • Size 3.7MB
  • Sample261006-trf9psax4z
  • SHA256 cffdebf3b84cc6d24452d2d40055dbff5f6588dddcec46aaefe8fd6aa44d0744
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Path
  • C:\Users\Admin\AppData\Roaming\Microsoft\OneNote\16.0\_R_E_A_D___T_H_I_S___IUI21_.txt

  • cerber

Ransom Note
  • Hi, I'am CRBR ENCRYPTOR ;) ----- ALL YOUR DOCUMENTS, PH0T0S, DATABASES AND OTHER IMPORTANT FILES HAVE BEEN ENCRYPTED! ----- The only one way to decrypt your files is to receive the private key and decryption program. To receive the private key and decryption program go to any decrypted folder, inside there is the special file (*_R_E_A_D___T_H_I_S_*) with complete instructions how to decrypt your files. If you cannot find any (*_R_E_A_D___T_H_I_S_*) file at your PC, follow the instructions below: ----- 1. Download "Tor Browser" from https://www.torproject.org/ and install it. 2. In the "Tor Browser" open your personal page here: http://xpcx6erilkjced3j.onion/B0C1-3E2A-1E27-0098-BDC6 Note! This page is available via "Tor Browser" only. ----- Also you can use temporary addresses on your personal page without using "Tor Browser". ----- 1. http://xpcx6erilkjced3j.1n5mod.top/B0C1-3E2A-1E27-0098-BDC6 2. http://xpcx6erilkjced3j.19kdeh.top/B0C1-3E2A-1E27-0098-BDC6 3. http://xpcx6erilkjced3j.1mpsnr.top/B0C1-3E2A-1E27-0098-BDC6 4. http://xpcx6erilkjced3j.18ey8e.top/B0C1-3E2A-1E27-0098-BDC6 5. http://xpcx6erilkjced3j.17gcun.top/B0C1-3E2A-1E27-0098-BDC6 ----- Note! These are temporary addresses! They will be available for a limited amount of time! -----
URLs
  • http://xpcx6erilkjced3j.onion/B0C1-3E2A-1E27-0098-BDC6

  • http://xpcx6erilkjced3j.1n5mod.top/B0C1-3E2A-1E27-0098-BDC6

  • http://xpcx6erilkjced3j.19kdeh.top/B0C1-3E2A-1E27-0098-BDC6

  • http://xpcx6erilkjced3j.1mpsnr.top/B0C1-3E2A-1E27-0098-BDC6

  • http://xpcx6erilkjced3j.18ey8e.top/B0C1-3E2A-1E27-0098-BDC6

  • http://xpcx6erilkjced3j.17gcun.top/B0C1-3E2A-1E27-0098-BDC6

Extracted

Path
  • C:\Program Files\7-Zip\Lang\DECRYPT_YOUR_FILES.HTML

Ransom Note
  • <html> <head> <style> body{ background-color: #3366CC; } h1 { background-color: RGB(249, 201, 16); } p { background-color: maroon; color: white; } </style> </head> <body> <center> <h1><b> Attention ! All your files </b> have been encrypted. </h1></br> <p> Due encrypting was used algoritm RSA-4096 and AES-256, used for protection military secrets.</br> That means > RESTORE YOU DATA POSIBLE ONLY BUYING decryption passwords from us.</br> Getting a decryption of your files is - SIMPLY task.</br></br> That all what you need:</br> 1. Sent Your ID_KEY on mailbox [email protected] or [email protected] </br> 2. For test, decrypt 2 small files, to be sure that we can decrypt you files.</br> 3. Pay our services. </br> 4. GET software with passwords for decrypt you files.</br> 5. Make measures to prevent this type situations again.</br></br> IMPORTANT(1)</br> Do not try restore files without our help, this is useless, and can destroy you data permanetly.</br></br> IMPORTANT(2) </br> We Cant hold you decryption passwords forever. </br>ALL DECRYPTION PASSWORDS, for what wasn`t we receive reward, will destroy after week of moment of encryption. </p> <p> Your ID_KEY: <br> </p> <table width="1024" border="0"> <tbody> <tr> <td><p>L8Z0cuuI73bETspVBquNgAH1DauX1lmNw44goyTC3ZPHmk812iaB7KLbP+pWJxoZHkpqGvSB5xtjp8Qrz9hXwQF3MRMMHvkJtW9okQlmcrnVnpq3R52fV53bv+cs1qh9o3/bHt1QL/sUHG05sSaWjinKsxQQIsKLFNsqrsS+GNoBk4W/vNOduAZQ8sUt7EXERYH/KU19uj3MqYiqWqeduZR5ruQkiWmW4Kxc4IG6k/WGmWwr0l927mqSpXkcdAyOFGMIuAr97BSuCnEtB/5Iiabl6qUvJ6PR5sYvm9PON31nNHTtlaGL73BZFatZnc5Qp3S58+8l0fCjrSjLh4ZGSw==ZW4tVVM=</p></td> </tr> </tbody> </table> </center></html></body>

Targets

    • Target
      winrar-x64-723tr.exe
    • Size 3.7MB
    • SHA256 cffdebf3b84cc6d24452d2d40055dbff5f6588dddcec46aaefe8fd6aa44d0744
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: Cerber

      Cerber is a widely used ransomware-as-a-service (RaaS), first seen in 2017.

    • Family: Fantom

      Ransomware which hides encryption process behind fake Windows Update screen.

    • Family: NanoCore

      NanoCore is a remote access tool (RAT) with a variety of capabilities.

    • Renames multiple (464) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Badlisted process makes network request

      Network request originating from process or tool commonly abused by malware.

    • Contacts a large (1138) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Disables Task Manager via registry modification

    • Creates a file in the Startup directory

      A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

    • Adds Run key to start application

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Modifies Windows Firewall

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Discovers running processes

      Running process information can be used to identify security tools or plan follow-on actions.

    • Drops file in System32 directory

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v16

Tasks