Resubmissions

30-11-2023 10:51

231130-mx5qxsah79 10

29-06-2023 20:59

230629-zs72psfa95 10

29-06-2023 16:29

230629-tzp7ksec27 10

General

  • Target

    medusa.exe

  • Size

    235KB

  • Sample

    230629-zs72psfa95

  • MD5

    f6f120d1262b88f79debb5d848ac7db9

  • SHA1

    1339282f9b2d2a41326daf3cf284ec2ae8f0f93c

  • SHA256

    1bc0575b3fc6486cb2510dac1ac6ae4889b94a955d3eade53d3ba3a92d133281

  • SHA512

    1067c1a73cf891d651fa007f4ccc4452f32801fe3859933ef1bcc00985e35ce016fa6c601c0e3c10df2080fc9b8a776b2f18d40bd64dfb98177ab638c4b545bd

  • SSDEEP

    6144:c5vMUmRTTgwnfeP+Jx1cLNAIyBcc9WrEWUC4wQh/6BeX:/U8Tgufnx1cLNncgQWUUQh/+e

Malware Config

Extracted

Path

C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-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;">5FC25DBC5F9034540A2F8E68E884C4173E5E5F5979E241A954A8449774C78F54892C64E22539F67211BC2653DB2963068BD69DCA8A9FFD3A1C35A6A5C578AB95<br>1E97F419E909441FAF0528855CEE91FF5BB238CD674C02E733DCA52BD0AA3038561710849D5BED102CB625D383943C8048A9690B27FED86637F6AF136355<br>A44C12A1409F901DF8E94F5E98E6AEB65333D14CEA44F5E9B481438D6F7466238D7E463A3DB6B0CBFD7BBB035981D2994BC0D519831C27DE0A847504B973<br>3455D72E4BAFBF7A2A119D7D3B5317D66CFE753B5D20EB27043F5F1164D5721395C4E1AB2F6BA6B2C2BA3CFDE0BBB969CFBBC5A8165B0581D47BA2CA317E<br>DB24EFD6C443FBBCE5ACF7ECAF8EFF0705E9B38BB1D9EA38894C83B7B97547BF238C3781D4FD3CB307F4941E85E8A436F221469DFC023EC15A8C9AAFE24A<br>CB89D53D93DD8518D76266F280F7A9DD434C4A18296FE155BBA350B159A6D5B1E8AAC5174579057CB37108DF488273FD3A2186FEC61155A790BBDCCE3227<br>8729A608E3D35D94885D6812514B772A0E6359A5CC036EFCD8AE1CB18C96FEFD590B68CC785925F4A9FC0CD33C12262D9565C56F71FBDA806EC320CE7D72<br>0D8C0997217365936039ADEC24DFADD75E784F8A0EC330465E3B0A2A57791D2F596EE690D1AFD867E172C23B998D146D767BA35BE8EE231F237E653BA2F5<br>BCAAD4592D2814FD209A2C667684</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>

Extracted

Path

\Device\HarddiskVolume1\Boot\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;">1087F9AC7D018DC3DE488E8D954C2D0E02A5C685590966B71042E41A861523D256AA39CEE93E12FFDE9FDCA560D72C0578ABE7A7F0CC9E01D73766723D29E3DD<br>666757EC29C36D9FD8B32E4F79DD0443DF1482678F239B0FD3565ED62C138F62AFD8B21893C00300259AC964BBADCFD95427E4C824BF6F759CCCA62D8A79<br>E8E636799A5087808F3A8040FD4A1A004A6C2AA15EE24E63FC751CC976D1F0A3141FB7B307B614B900D6D3B32FEC9C6D84930489C2E5C19FFD052C9335C6<br>AE33BA4816E205FE621391709628A5D2C9143D621C19744D36A34583BE12E658118FF30E4072D2C9E0F90796EFB998C7128F358A07685B689B67373C8B05<br>EDBFF9D01A4194511AA381F3F663BBCB2E282C8DF311C53E4FB9A1B69C4018C30CA3A57A1754F27C61F676BCB8970550E6AE11350A067A83E6F22072986B<br>451F0CF71027F9962FBED37B0B8CD96459C4A5540E4994629C9893E8A50968203204B7F9D065FE205AA0BC1F4991578423598CDDB51AC66020A400713816<br>9446991C13906C605D8D49C24A3DF0B44523416472909F2EAD88D632434F9EFBA8E5D0F4F6E3775D60B7E8998143B9C1B38A6B7FD4E68BCDC12858EF875E<br>C1F7761425DCB65A49109FF5BB92818076FAA68634EE24A5A4A5BA0DB58DD88A57AE9481073807A5CF684A7872920F2BA3D2B6E9B833D369EBB99E2B9F8D<br>984A49ADCD20247580D0E4E5B50B</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

      medusa.exe

    • Size

      235KB

    • MD5

      f6f120d1262b88f79debb5d848ac7db9

    • SHA1

      1339282f9b2d2a41326daf3cf284ec2ae8f0f93c

    • SHA256

      1bc0575b3fc6486cb2510dac1ac6ae4889b94a955d3eade53d3ba3a92d133281

    • SHA512

      1067c1a73cf891d651fa007f4ccc4452f32801fe3859933ef1bcc00985e35ce016fa6c601c0e3c10df2080fc9b8a776b2f18d40bd64dfb98177ab638c4b545bd

    • SSDEEP

      6144:c5vMUmRTTgwnfeP+Jx1cLNAIyBcc9WrEWUC4wQh/6BeX:/U8Tgufnx1cLNncgQWUUQh/+e

    • MedusaLocker

      Ransomware with several variants first seen in September 2019.

    • MedusaLocker payload

    • UAC bypass

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (193) files with added filename extension

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

    • Renames multiple (308) files with added filename extension

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

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks whether UAC is enabled

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

MITRE ATT&CK Enterprise v6

Tasks