Overview

overview

10

Static

static

3

Fantom.exe

windows10-2004-x64

10

Fantom.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    Fantom.exe
  • Size 261KB
  • Sample260620-vytdaaf18r
  • SHA256 f4234a501edcd30d3bc15c983692c9450383b73bdd310059405c5e3a43cc730b
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
fantomdefense_evasiondiscoveryransomware

Malware Config

Extracted

Path

  • C:\Program Files\7-Zip\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>B4F8z8TzQaKwQz1jC6cCTqeYnkuYhfC8Br9dP+nvy9vgIV8+YPpakHz/CZbQuo3INEF2HA2HswXTpiddCHDfkxzCl36JQJQiN/YEFUSDOqC5nbDKGUgCyPZ/N9lQ8/PTWQOOFR6kpZr76F4b1+jmbzsacfq4Vb8FPtAjq+FmPYTcn4Ln5Jf59ZzxQqd2pEH72IXsKkhlK05UfiYvFK+N4zFzMPhxjPjW7xaNqZ93D+kFhJTIHBu42UiBVhYzfLoSbXvr1ef8h6jt1/JhxJgrvVIvC6ZjFEjYpvzktMhw/5VUYE5J01d+KMamwWmGpdQC3OERmrT7tdYjlviTiprQNA==ZW4tVVM=</p></td> </tr> </tbody> </table> </center></html></body>

Extracted

Path

  • C:\Program Files\7-Zip\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>B+yaNdpUBhu4SSd++C5zTdi0HctXyQZKBejtETEkkf4rqQ9SYdumkiHYMhpzf1qTsNvjgJMQavtVFie9nw1yvbORMrDMiSqYBTjvME9Ivv8IZ8S8IXzF3KBgey0HVZUpn5PgMQGvkzYJdtHFzWgjOrMThKcAk/Rqr0NRygQcOQPUwoHAgjGidEsiQb2Wt7SwTIQNOv8ICAZKcTxi1Fi+84WvwhxneF3xCqjwN2htP31hvbJnvqiuqu7FBhIr232tZEkvQ51RNa8M4wjJEuQxqofp3ZLkahgZ/RwVUOxHqaJmFLJeEhSWMMcf/K54831xnllfx8zASsDD6KycWv18Fg==ZW4tVVM=</p></td> </tr> </tbody> </table> </center></html></body>

Targets

    • Target
      Fantom.exe
    • Size 261KB
    • SHA256 f4234a501edcd30d3bc15c983692c9450383b73bdd310059405c5e3a43cc730b
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasiondiscoveryfantomransomware

    • Family: Fantom

      Ransomware which hides encryption process behind fake Windows Update screen.

      ransomwarefantom

    • Renames multiple (2419) files with added filename extension

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

      ransomware

    • Disables Task Manager via registry modification

      defense_evasion

    • Checks computer location settings

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

    • Executes dropped EXE

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks