Overview

overview

10

Static

static

3

Fantom.exe

windows7-x64

10

Fantom.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    Fantom.exe
  • Size 261KB
  • Sample240817-ghxtwatbql
  • SHA256 f4234a501edcd30d3bc15c983692c9450383b73bdd310059405c5e3a43cc730b
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
fantomdiscoveryevasionransomwarespywarestealer

Malware Config

Extracted

Path

  • C:\MSOCache\All Users\{90140000-0018-0409-0000-0000000FF1CE}-C\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>qRS5C6xw42a3btKqO9eQBlgrITpTtRnZENiYPxbVoEhkGlYvzXnDJbsaHwuRJyQlKAEK9Q1CmqMJ70S/uF5ILAQGNjxfn0KotGiiLHzgxl32IzIzIZZtronYmNpFZDyP1YAPyeCgJbaN/mcU5SboU5cyHC4uVm+D17HPSOeHCrZUSnDZSdxuSHIJPcAE33l53JSXZm6JRpRaUF3QlmGEhSb5u8zYbPD3Ndr/wiO+EP6JIrUm3JwecQA94SLa/5YHx2ZevGLDUEsPwtAqDkaBGsrewkMsF0btsrFcZyW2+8+MSuaKokJNwaldmRAPKukcpo6+N4neYne/sJeFKBPywA==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>Tp/13h0JYueCaH+HlUr+8gPGzQ6miNH3LgEl2RknyXe+HVaXnpJj2cqkHwqPEnxs5OTabpyJ833X08XXS7dn08Mh5dWnhW9A2nhapfQZGeFuA0SWfJBB1W4fnDsf5rrJSyw3mviaTPVEbeSIroWQ4BoZJnhbbn3+7WAshMu4t7fMkY2MxEytBPJgR1zRm5YbScLwl8G2UCwfaJauZ/lNEDVJwzmYsimZtMsg7iGr7wC9IdO2K5bkl7/p8+0P2Jh4k+ddi3bInn99bKwPUzPE9GvXHK6iGBSaiA/I5ItpPLVQcV1CCHT5WwhDjsIcy8F1ftewTotoVoUUBu67GXvkdQ==ZW4tVVM=</p></td> </tr> </tbody> </table> </center></html></body>

Targets

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

    • Fantom

      Ransomware which hides encryption process behind fake Windows Update screen.

      ransomwarefantom

    • Renames multiple (3044) files with added filename extension

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

      ransomware

    • Disables Task Manager via registry modification

      evasion

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks