Resubmissions

01-06-2024 08:45

240601-knzr7sfg4v 10

01-06-2024 08:34

240601-kgxdhafe7s 10

Analysis

  • max time kernel
    144s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    01-06-2024 08:34

General

  • Target

    e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe

  • Size

    473KB

  • MD5

    f83fb9ce6a83da58b20685c1d7e1e546

  • SHA1

    01c459b549c1c2a68208d38d4ba5e36d29212a4f

  • SHA256

    e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684

  • SHA512

    934ec9073a28b90e8df785bef49f224789da59f83729208b92dba0503e2894b3f48ed04b20de1ba49374b1cd26f0c87e8e5ab79e817258135e3be2c171f3f396

  • SSDEEP

    12288:v6l/7FpnaeoQbRLBYdunMCayql4YcQD+AgJbAWgjbgpQ:CDna43YAKl4Yci+AggEpQ

Malware Config

Extracted

Path

C:\$Recycle.Bin\DECRYPT-FILES.html

Ransom Note
<html> <head> <script> function CopyToClipboard(containerid) { if (document.selection) { var range = document.body.createTextRange(); range.moveToElementText(document.getElementById(containerid)); range.select().createTextRange(); document.execCommand("copy"); } else if (window.getSelection) { var range = document.createRange(); range.selectNode(document.getElementById(containerid)); window.getSelection().addRange(range); document.execCommand("copy"); alert("Base64 copied into the clipboard!") } } </script> <style> html{ margin:0; padding:0; width:100%; height:100%; } body { background: #000000; color: #ececec; font-family: Consolas }; .tooltip { position: relative; display: inline-block; border-bottom: 1px dotted black; } .tooltip .tooltiptext { visibility: hidden; width: 120px; background-color: #555; color: #fff; text-align: center; border-radius: 6px; padding: 5 px 0; position: absolute; z-index: 1; bottom: 125%; left: 50%; margin-left: -60px; opacity: 0; transition: opacity 0.3s; } .tooltip .tooltiptext::after { content: ""; position: absolute; top: 100%; left: 50%; margin-left: -5px; border-width: 5px; border-style: solid; border-color: #555 transparent transparent transparent; } .tooltip:hover .tooltiptext { visibility: visible; opacity: 1; } p#base64{ -ms-word-break: break-all; word-break: break-all; -webkit-hyphens: auto; -moz-hyphens: auto; -ms-hyphens: auto; hyphens: auto; } p#base64:hover{ cursor: hand; } </style> </head> <body> <table style="position: absolute;" width="100%"> <tr> <td style="width: 25%;"> <td style="width: 50%;"> <div style="text-align: center; font-size: 20px;"> <p><b>Maze ransomware</b></p> <p>*********************************************************************************************************************</p> <p>Attention! Your documents, photos, databases, and other important files have been encrypted!</p> <p>*********************************************************************************************************************</p> </div> <div style="text-align: center; font-size: 18px;"> <p><b>What is going on?</b><br>Your files have been encrypted using strong reliable algorithms RSA-2048 and ChaCha20 with an unique private key for your system</p> <p>You can read more about this cryptosystem here: <a href=https://en.wikipedia.org/wiki/RSA_(cryptosystem)>https://en.wikipedia.org/wiki/RSA_(cryptosystem)</a></p> <p>The only way to recover (decrypt) your files is to buy decryptor with the unique private key</p> <p><u>Attention! Only we can recover your files! If someone tell you that he can do this, kindly ask him to proof!</u></p> <p>By us you can decrypt one of your files for free as a proof of work that we have the method to decrypt the rest of your data.</p> <p>In order to either buy the private key or make test decryption contact us via email: <br> <u><b>Main e-mail: [email protected]<br>Reserve e-mail: [email protected]</b></u> <p>Remember to hurry up as email address may not be available for very long as soon as law enforcements of different countries always trying to seize emails used in ransom companies <p>If you are willing to pay but you are not sure knock us and we will save your e-mail address. In case the listed addresses are seized we will write you from the new one</p> <p>Below you will see a big base64 blob, you will need to email us and copy this blob to us.<br>you can click on it, and it will be copied into the clipboard.</p> <p>If you have troubles copying it, just send us the file you are currently reading, as an attachment.</p> <p>Base64: </p> </div><div style="text-align: center; font-size: 12px;"><p id="base64" onclick="return CopyToClipboard('base64')" class="tooltip">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<span class="tooltiptext">Click here to copy</span></p></div></td><td style="width: 25%; text-align: right;"></tr></table></body></html>
Emails

[email protected]<br>Reserve

[email protected]</b></u>

Signatures

  • Maze

    Ransomware family also known as ChaCha.

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Drops startup file 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe
    "C:\Users\Admin\AppData\Local\Temp\e8a091a84dd2ea7ee429135ff48e9f48f7787637ccb79f6c3eb42f34588bc684.exe"
    1⤵
    • Drops startup file
    • Sets desktop wallpaper using registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2328
    • C:\Windows\system32\wbem\wmic.exe
      "C:\cfg\..\Windows\wxot\ct\eojdw\..\..\..\system32\ke\..\wbem\cxj\hmye\..\..\wmic.exe" shadowcopy delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2544
    • C:\Windows\system32\wbem\wmic.exe
      "C:\eyc\ph\kh\..\..\..\Windows\xy\cqkml\svcx\..\..\..\system32\hfbs\t\..\..\wbem\b\..\wmic.exe" shadowcopy delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2340
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2408
  • C:\Windows\SysWOW64\DllHost.exe
    C:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}
    1⤵
      PID:1092
    • C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Desktop\RegisterExit.cfg.8SZK
      1⤵
      • Modifies registry class
      PID:1508

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\$Recycle.Bin\DECRYPT-FILES.html

      Filesize

      6KB

      MD5

      73f29593961f8a202f75c2796abe372f

      SHA1

      d05b93adfbfe6c0098c3105af35cc6fe1a250e3d

      SHA256

      2ff4361f6d282f3eb79545f5bfe6aa3692d8dd0615bfc72a956469f4fd353fab

      SHA512

      626982397686285d2e787e53e96f3528e935628b01ffd70d85bd74f03a307ebbbb90d11076511395551bb9a26d25cd1071c766c97f154fa144447497443aba7c

    • C:\Users\Admin\AppData\Roaming\Microsoft\Speech\Files\UserLexicons\SP_7D15FEC7181B484C96C65C3982ACD926.dat

      Filesize

      940B

      MD5

      f776aa54094c2df6bb9e5f04f010afc1

      SHA1

      f45480640e8d97fde420d0a91f044122ce22cc77

      SHA256

      d52f9d5c970105d1188923f2dccd689ea388309699c8f5d2f1025706d0349854

      SHA512

      8e197cac173ff5b3d01b0e55462c269ef7ed3a36f05e377669ceb22572aeeae913890adbacda21d0bc647859eed6ea6cddfae19602c2df374b17426895a4ab87

    • memory/2328-0-0x0000000000640000-0x0000000000699000-memory.dmp

      Filesize

      356KB

    • memory/2328-1-0x0000000001DF0000-0x0000000001E4B000-memory.dmp

      Filesize

      364KB

    • memory/2328-5-0x0000000001DF0000-0x0000000001E4B000-memory.dmp

      Filesize

      364KB

    • memory/2328-9-0x0000000001DF0000-0x0000000001E4B000-memory.dmp

      Filesize

      364KB

    • memory/2328-11-0x0000000001DF0000-0x0000000001E4B000-memory.dmp

      Filesize

      364KB

    • memory/2328-14-0x0000000001DF0000-0x0000000001E4B000-memory.dmp

      Filesize

      364KB

    • memory/2328-1930-0x0000000001DF0000-0x0000000001E4B000-memory.dmp

      Filesize

      364KB