Overview

overview

10

Static

static

10

IN.exe

windows7-x64

10

IN.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    IN.exe

  • Size

    340KB

  • Sample

    231013-rcm3laac7z

  • MD5

    714870c33ba84e744b84b32e6e114ed9

  • SHA1

    840f442d4466713becdf72b88846871330ac38e7

  • SHA256

    51b8a283f87a95edb5e98125e5730bcf843fc7ec8fcdc175c8dc0ba3032e8a51

  • SHA512

    270c584cc9f696de3421429627a07bfbd7829a033cfdc16280e7e233e8ae09e2f1cd0341537a6b050811683d93a14a1465aa3ab96e9577c98ebea521faae65f2

  • SSDEEP

    6144:PNs9prB0CnszdPZxMzk1ukSXa9bnuDOeFdGpBP7ENf3zcfUE:y9RaPZxMzk1uBXa9bu2JeAfUE

Score
10/10
medusalockerevasionpersistenceransomware

Malware Config

Extracted

Path

\Device\HarddiskVolume1\Boot\da-DK\HOW_TO_BACK_FILES.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; word-break: break-all; } .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;">{{IDENTIFIER}}</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<br> </a> 4. Start a chat and follow the further instructions. <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> <p>* To contact us, create a new free email account on the site: <a href="https://protonmail.com">protonmail.com <br> <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>

Targets

    • Target

      IN.exe

    • Size

      340KB

    • MD5

      714870c33ba84e744b84b32e6e114ed9

    • SHA1

      840f442d4466713becdf72b88846871330ac38e7

    • SHA256

      51b8a283f87a95edb5e98125e5730bcf843fc7ec8fcdc175c8dc0ba3032e8a51

    • SHA512

      270c584cc9f696de3421429627a07bfbd7829a033cfdc16280e7e233e8ae09e2f1cd0341537a6b050811683d93a14a1465aa3ab96e9577c98ebea521faae65f2

    • SSDEEP

      6144:PNs9prB0CnszdPZxMzk1ukSXa9bnuDOeFdGpBP7ENf3zcfUE:y9RaPZxMzk1uBXa9bu2JeAfUE

    Score
    10/10
    evasionpersistenceransomware

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Modifies boot configuration data using bcdedit

      ransomwareevasion

    • Renames multiple (4413) files with added filename extension

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

      ransomware

    • Renames multiple (7545) files with added filename extension

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

      ransomware

    • Deletes System State backups

      Uses wbadmin.exe to inhibit system recovery.

      ransomware

    • Deletes system backups

      Uses wbadmin.exe to inhibit system recovery.

      ransomware

    • Adds Run key to start application

      persistence

    • Enumerates connected drives

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

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks