General

  • Target

    svhost.exe

  • Size

    678KB

  • Sample

    221117-g2sz2ahg61

  • MD5

    5aa0a571567f8437556e9b00ae5a3532

  • SHA1

    45377cb152832c9112db7909219fa87a6e760aae

  • SHA256

    73549f6017ad04e475e40e9d306b3e042d080843d8e7c029a5bb6b8ab7e34432

  • SHA512

    d320fecef75b4514b9cf154d41c3cc03e2cd8f6bf15ff0d7c97398127c0728cf0b24e5a46435573d38b384b1515876070f28daa7d37e81de10d1db2b27ae51ec

  • SSDEEP

    12288:cPJ4UOTYQivI2qZ7aSgLwkFVpzUvest4ZEbjJLuhJVoM7:JRTYVQ2qZ7aSgLwuVfstRJL6YM

Malware Config

Extracted

Path

C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\Recovery_Instructions.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;">3CC1DEAE0E7CC3C82C62B472124F50ADE721272201DA2791C3B7BE5AF037EAD6BBF158389FF517B49B67CE105289EA60AB0FC2F829E49EA9E8DED21B1001544E<br>7AEE4B9F34B7042EC3DDA9C1610BA1B42B44A2F248FD50F85BA5904A79DD8DE9ED7DDA4B9807FB72E1BB96340386C841B2BFB3A9E731931055FB0CE4A427<br>CFAE525BC0FDCF2B29D26B1798F46C233D28A977F41FF8199936F868E3D57A4BC1EE8093D46CA1B6CD1539AF16CEE2413E0F014FA058247822445BAC6B89<br>02F71F1C996BFD9D30BFDD9F441DCE2E78C8C7D58DEAF1976206A99691276DD6203FD192BFA2FDAD114E1240DF8D112CDE602EE10894ADFC2B73BC8BF598<br>2C69D8AAC0BC20A36119955A62C44490F15FFAA1CE96479D225A59E082BD7BA2028BBAEDED16F0E355360FFFCDDF5DA73ED1AF81B6B1F0CA0E5A4C0CE349<br>E81659AEE922A934CAB67DBB96DB443E67541D2FF62526BDEE1397759A1A18E8FB32EA649ED34D025E109C1F80A0FB55EC6E77143318FCCE325FE3A3943E<br>D01D44A4D56E149CF4C505BE7ADF75C100093F36B0679B6F66AAA57C35BD5F3E4E37B35385A8CC86B8F66B8DD078D6CDF2B22C9BAC5D49454FCA78D5A675<br>42B7C3E629FEF91CB11DBC68E5B3BA3C68E3B2F173200EAAC09875ACDD7F7D2962774FEC681243F76467CD9248C22FC57742D35C6D16455B3D5D516EC27B<br>2B17DCBE1F8163AB2582310DE13B</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>http://gvlay6u4g53rxdi5.onion/31-LPy3hdSfGLBgLSfGcKN9rubDKoa1VMK4-9One4w8FvjhYZkcKvsbEI2UvnGHl7qg7</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 "{{URL}}". <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 mail on the site:</b> <a href="https://protonmail.com">protonmail.com<br> <hr> <b>Make contact as soon as possible. Your private key (decryption key) <br> is only stored temporarily.<br><br> 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

C:\Recovery_Instructions.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;">3DAB91E8B2232B80EB28438F2EA907088548772DAF8D788F42605285DF1D81881141FE849AD01AC8B70B9E0682B686F56831A7CF1967D58C8645C5412D9F3F44<br>7903AB54AF8C255E750FBB5354F03C0B0D3F69C7CAA2A9FB1C1F5C1729615DB28678E49EF1D0CC65DD93044B8BD3093AED2343AC0DC74356703864E46740<br>A2B7FD18CC59F988922D4E890A15DC07209BE7920839EA2A36DF17E3962DE01B6A1E9203F586BF22680CF89CCED4F7E51C190A664D05E758AA438F189CC2<br>075399D31EBA17E380F9874321C4740143F336660723DBB34CE43546F5FFD6DC2A44DB83A39E0BA66CEED051B206045581509E5DD9B0FFC2870C2C709ECF<br>5610412EE190D49F090DDB2E7BC44E4628BC79783F8AB9B46BBC4D57C46DD7E087E7D18F97E9FB0F55A184A6BE5F1C36380F5804F4CDF7B976E40D745420<br>D805EA390BAF8706BD7338EFD9D8C8E50CC230A70A376DBD53E31B13869B4681426F734151B233DACBC9CA912CCAAB1B90BAD2EF4DF80AEE321DF0FA1212<br>6C6E0745B7CAAE77AE0C09A74B963CD35A10F657BC1C868EF9FD518B5A4E3845224B223628C901CB4A5090ECAD3C23D5549FE6C280C9046AFA5F4E5932A7<br>1CD3C6388A02FFCD93507064D33DDB61C671108D32DC4545FDCF612752EB3C9BA56467F3E9E76F81FEC7F05524FC490C1DB7924D0C5155DD239BE5AC7AAF<br>291422B1A7531330AEE50702DE2F</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>http://gvlay6u4g53rxdi5.onion/31-LPy3hdSfGLBgLSfGcKN9rubDKoa1VMK4-rbyqjU67Kgs8bPNZj9nS7P4JQXmqi87n</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 "{{URL}}". <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 mail on the site:</b> <a href="https://protonmail.com">protonmail.com<br> <hr> <b>Make contact as soon as possible. Your private key (decryption key) <br> is only stored temporarily.<br><br> 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

      svhost.exe

    • Size

      678KB

    • MD5

      5aa0a571567f8437556e9b00ae5a3532

    • SHA1

      45377cb152832c9112db7909219fa87a6e760aae

    • SHA256

      73549f6017ad04e475e40e9d306b3e042d080843d8e7c029a5bb6b8ab7e34432

    • SHA512

      d320fecef75b4514b9cf154d41c3cc03e2cd8f6bf15ff0d7c97398127c0728cf0b24e5a46435573d38b384b1515876070f28daa7d37e81de10d1db2b27ae51ec

    • SSDEEP

      12288:cPJ4UOTYQivI2qZ7aSgLwkFVpzUvest4ZEbjJLuhJVoM7:JRTYVQ2qZ7aSgLwuVfstRJL6YM

    • 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.

    • Executes dropped EXE

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Reads user/profile data of web browsers

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

    • 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