Analysis

  • max time kernel
    174s
  • max time network
    187s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    01/02/2022, 15:52

General

  • Target

    0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe

  • Size

    669KB

  • MD5

    50cb8959fad4a94b2c6927325e46306d

  • SHA1

    1db0f2a6e3415f49681ee56bba524e3ad4a3810e

  • SHA256

    0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610

  • SHA512

    8cf27998b78ea09acfcc137d92763836841b1cbbf0719c47b59797d8f88962eee74c8f8e5e4e4a77d0af50fc7b056cee270204a61cb39796a87935da0467dc07

Malware Config

Extracted

Path

C:\RECOVER_INSTRUCTIONS.html

Ransom Note
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=Edge"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, user-scalable=yes"> <title>Title</title> <style> html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, img, ins, kbd, q, s, samp, small, strike, strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, embed, figure, figcaption, footer, header, hgroup, menu, nav, output, ruby, section, summary, time, mark, audio, video { margin: 0; padding: 0; border: 0; font-size: 100%; font: inherit; vertical-align: baseline; } /* HTML5 display-role reset for older browsers */ article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section { display: block; } body { font-family: Tahoma, Arial; background: #717798; } .all { max-width: 1170px; margin: auto; background: #000; min-height: 100px; border-radius: 10px; } .tl { text-align: center; color: #e03930; font-family: Tahoma; font-size: 28px; font-weight: 700; position: relative; height: 60px; line-height: 60px; } .close { padding: 15px; width: 36px; height: 36px; position: absolute; right: 15px; top:0; } .bg { background: #252a42; text-align: center; color: #ffffff; padding: 25px 15px; font-size: 18px; font-weight: 400; line-height: 20px; } .bg span { color: #f25252; } .bg a { color: #9676fd; font-size: 20px; font-style: italic; text-decoration: none; line-height: 35px; } .bg c { color: #f25252; font-weight: 500; font-size: 20px; line-height: 35px;} .footer { padding: 15px 0;} .tl2 { text-align: center; color: #e03930; font-size: 25px; font-weight: 500; line-height: 32px; text-decoration: underline; padding-bottom: 15px; } .text { min-height: 192px; color: #ffffff; font-size: 16px; font-weight: 500; line-height: 24px; } .text div { padding-right: 50px; padding-left: 50px; } @media (max-width: 767px) { .tl { height: auto; padding-right: 50px; line-height: 1.5; } .text div { padding: 0 15px; } .footer { background: none; } } </style> </head> <body> <div class="all"> <div class="container"> <div class="tl">All your data are encrypted! <div class="close"></div></div> <div class="bg"> <c>What happened?</c> <br> Your files are encrypted, and currently unavailable. <br> You can check it: all files on you computer has new expansion.<br> By the way, everything is possible to recover (restore), but you need to buy a unique decryptor. <br> Otherwise, you never cant return your data.<br> <br> <c>For purchasing a decryptor contact us by email: </c><br> <a href="mailto:[email protected]">[email protected]</a><br> If you will get no answer within 24 hours contact us by our alternate emails: <br> <a href="mailto:[email protected]">[email protected]</a> <br> <br> <c>What guarantees?</c> <br> Its just a business. If we do not do our work and liabilities - nobody will not cooperate with us.<br> To verify the possibility of the recovery of your files we can decrypted 1 file for free. <br> Attach 1 file to the letter (no more than 10Mb). Indicate your <b>personal ID</b> on the letter:<br> <span style="width:800px; word-wrap:break-word; display:inline-block; color: #ffffff; font-size: 10px;">F2E8160A1D94E1260F23676C3813ED0EE3A0C8C128A4E176CBE642150D12774F24B3EDB7C29ADD59284C4E6754D1C3F97B230E0AFA060AC023F870B500F4E703<br>3343B4A3AD925F12795F26BFDE79A4315BB87C35AC4AED4ADF72E835B48FBAC219128F935B3207CB9CA1C7AEC6D26EEDF3B628C7258D1683300190F71480<br>8C194228369E71BAF28E8D61C746424D1859F8BAEB03090E2C403F65DB97644D972EDBC59753D450565DCF959155B24CA0A0D41EAEEC321F3715B2DD6980<br>5094A38A6B5E66ABCC5AA917F45E6E8C8722910E65A5B792F7C5E6B7D4CAA0A7013B8C7E09C35174291E5D9517CD1DC59F81DD1648A41758F8876B4DDBF3<br>BB8E7C69C2B0546268274F8D65D98FE7498B30F2582593D83E9A0056C3FE778FD30D9AF59F87F1A213287AEE04243DEBE10F8C6F1AB7157DFF3A6C008299<br>591A9B7BBF15714C1F5FB06842DD0426F7B808DA7AF740A11CA8C37687D942607D2851E26033EF596F00AF5112D540001D41ED59EF2E6FC449DD59CCD6FA<br>3F04462087CF2B38D95D51BC8D19F8AEC71FDACB9A3A17644E5FF1FEFC67EFC33AA59607D3BBE19F7618B6A8238621EC09B7E9152E97714AC25F074FFAB8<br>225957B6C95AC2308B2B7A6D22075C3CAC70A69113815CDBF847DAE4485EBACE1CFDF89EE7C9A35910C242D5115A8251373162467BE53FCAD5A5E1C75748<br>7FA56A81860058E9551B34A75794</span> <br> </div> <div class="footer"> <div class="tl2"> Attention! </div> <div class="bg2"> <div class="text"> <div> - Attempts of change files by yourself will result in a loose of data. <br> - Our e-mail can be blocked over time. Write now, loss of contact with us will result in a loose of data.<br> - Use any third party software for restoring your data or antivirus solutions will result in a loose of data. <br> - Decryptors of other users are unique and will not fit your files and use of those will result in a loose of data.<br> - If you will not cooperate with our service - for us, its does not matter. But you will lose your time and data, cause just we have the private key. </div> </div> </div> </div> </div> </div> </body> </html>
Emails

href="mailto:[email protected]">[email protected]</a><br>

href="mailto:[email protected]">[email protected]</a>

URLs

http-equiv="X-UA-Compatible"

Signatures

  • MedusaLocker

    Ransomware with several variants first seen in September 2019.

  • MedusaLocker Payload 2 IoCs
  • UAC bypass 3 TTPs
  • Executes dropped EXE 1 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Drops desktop.ini file(s) 1 IoCs
  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 63 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • System policy modification 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe
    "C:\Users\Admin\AppData\Local\Temp\0a82724cfb44769e69d75318b0868cd6de4aa789951362b3e86199e6c7922610.exe"
    1⤵
    • Checks whether UAC is enabled
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:3440
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2300
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3564
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:432
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:712
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k wusvcs -p
    1⤵
      PID:3660
    • C:\Users\Admin\AppData\Roaming\svhost.exe
      C:\Users\Admin\AppData\Roaming\svhost.exe
      1⤵
      • Executes dropped EXE
      PID:3588

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads