Analysis

  • max time kernel
    175s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    01/02/2022, 15:23

General

  • Target

    f0164ac8d78b8c4323fb37b1382a9f3ed21228433640380b8d591a5074375e70.exe

  • Size

    669KB

  • MD5

    f9e4a20f4929036d88515d002e30afa5

  • SHA1

    2bbe0b37255ed638e5ae3a0d2e586dbadb8416bc

  • SHA256

    f0164ac8d78b8c4323fb37b1382a9f3ed21228433640380b8d591a5074375e70

  • SHA512

    5efea74d735df55a4a7bb9bd921209d0c2def8ed9db21deecf7c625ad05b0ec1d27fb0134985d0497b66ab93ad59b1edd3fa0489db02ddd47b82559e5f5cd798

Malware Config

Extracted

Path

C:\HOW_TO_RECOVER_DATA.html

Ransom Note
<html> <style type="text/css"> body { background-color: #f5f5f5; } h1, h3{ text-align: center; text-transform: uppercase; font-weight: normal; } /*---*/ .tabs1{ display: block; margin: auto; } .tabs1 .head{ text-align: center; float: top; padding: 0px; text-transform: uppercase; font-weight: normal; display: block; background: #81bef7; color: #DF0101; font-size: 30px; } .tabs1 .identi { font-size: 10px; text-align: center; float: top; padding: 15px; display: block; background: #81bef7; color: #DFDFDF; } .tabs .content { background: #f5f5f5; /*text-align: center;*/ color: #000000; padding: 25px 15px; font-size: 15px; font-weight: 400; line-height: 20px; } .tabs .content a { color: #df0130; font-size: 23px; font-style: italic; text-decoration: none; line-height: 35px; } .tabs .content .text{ padding: 25px; line-height: 1.2; } </style> <body> <div class="tabs1"> <div class="head" ><b>Your personal ID:</b></div> <div class="identi"> <span style="width:1000px; color: #ffffff; font-size: 10px;">FD8568BF98E382CF4C04D91E7D6335B65F1B046C68F48D0CEAFE0F6C0B4864ADC08E5A6F3D21FA52BC296F01582C33D83C43414355D5AB55331152AD7974A02C<br>148642612FD7D345F4C4CB955C168555F3A599F6596934AB32558D9D0A9BE5D67AEC6C746DC88D5A8A610296383E6136900A24573519E75436A1A42A4253<br>A8A2C513B6D9CBB664CD0C14FBDDF0F0B82DD79203170992CC854942D423A4B606CDFAFEE1CC1F2460341F1DB54213BB3271FD2EAAE15273D58061C3F67A<br>85FBE80285C74C687E20179636F11A9C777B25D7E56DD483EE596B31725A5B857A19879EA6CBCCB70EE27BA5BDE85CD9AF50E2EBB69FDFE7B4843C579242<br>4923AA600F7376618DF5C9B828FAB16832D1F0BCBE56EEC0106577E00477AF89AA49BA9791E6575D166C47BC9B4D1B52B4BA6B3D7ACBF2AC93FD8EABAB06<br>3D55451699E81C52226148C1135163F3A6E839621E8870E2EAF47128BA14FEC8A2EF8D7DC0F9AB2FBA69D87210B165EBA946470369A44CF9531C06C269BF<br>1F258DD3C4DB8D0346B62D03E6B429C04A841D0910B132B572237AFC7DFEAE36E8106C65E70D11C1E9372992A96BF44312F5FF661CFEA2CDA6059436D777<br>3D4F287CF6CA05DBE0773074294E9A7766DC3E50E6F6D5599B85CE51F3D03B362C22B0052EDFC60EA9DDB2A634734E36FEA547B2B5A7B5A40B85DD345335<br>63C7B3781E5C3C57498638751BB0</span> <br> <!-- !!! dont changing this !!! --> </div> </div> <!-- --> <div class="tabs"> <!--tab--> <div class="tab"> <div id="tab-content1" class="content"> <div class="text"> <!--text data --> <b>/!\ YOUR COMPANY NETWORK HAS BEEN PENETRATED /!\</b><br> <b>All your important files have been encrypted!</b><br><br> <hr> Your files are safe! Only modified. (RSA+AES)<br><br> ANY ATTEMPT TO RESTORE YOUR FILES WITH THIRD-PARTY SOFTWARE<br> WILL PERMANENTLY CORRUPT IT.<br> DO NOT MODIFY ENCRYPTED FILES.<br> DO NOT RENAME ENCRYPTED FILES.<br><br> No software available on internet can help you. We are the only ones able to<br> solve your problem.<br><br> We gathered highly confidential/personal data. These data are currently stored on<br> a private server. This server will be immediately destroyed after your payment.<br> If you decide to not pay, we will release your data to public or re-seller.<br> So you can expect your data to be publicly available in the near future..<br><br> We only seek money and our goal is not to damage your reputation or prevent<br> your business from running.<br><br> You will can send us 2-3 non-important files and we will decrypt it for free<br> to prove we are able to give your files back.<br><br> <!--text data --> <hr> <b>Contact us for price and get decryption software.</b><br><br> <a>qd7pcafncosqfqu3ha6fcx4h6sr7tzwagzpcdcnytiw3b6varaeqv5yd.onion</a><br> * Note that this server is available via Tor browser only<br><br> Follow the instructions to open the link:<br> 1. Type the addres "https://www.torproject.org" in your Internet browser. It opens the Tor site.<br> 2. Press "Download Tor", then press "Download Tor Browser Bundle", install and run it.<br> 3. Now you have Tor browser. In the Tor Browser open <a>qd7pcafncosqfqu3ha6fcx4h6sr7tzwagzpcdcnytiw3b6varaeqv5yd.onion </a><br> 4. Start a chat and follow the further instructions. <br><br> <hr> <b>If you can not use the above link, use the email:</b><br> <a href="[email protected] ">[email protected] </a> <br><a href="[email protected]">[email protected]</a> <br> <b>* To contact us, create a new free email account on the site:</b> <a href="https://protonmail.com">protonmail.com<br> <hr> <b> IF YOU DON'T CONTACT US WITHIN 72 HOURS, PRICE WILL BE HIGHER.</b><br> </div> </div> </div> <!--tab--> <!--text data --> </div> </div> <!--tab--> </div> </div> </body> </html>

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.

  • 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\f0164ac8d78b8c4323fb37b1382a9f3ed21228433640380b8d591a5074375e70.exe
    "C:\Users\Admin\AppData\Local\Temp\f0164ac8d78b8c4323fb37b1382a9f3ed21228433640380b8d591a5074375e70.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:2220
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3696
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3052
    • C:\Windows\SysWOW64\Wbem\wmic.exe
      wmic.exe SHADOWCOPY /nointeractive
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:616
  • C:\Users\Admin\AppData\Roaming\svhost.exe
    C:\Users\Admin\AppData\Roaming\svhost.exe
    1⤵
    • Executes dropped EXE
    PID:2996

Network

MITRE ATT&CK Enterprise v6

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Downloads