General

  • Target

    58a4ab673e72f1ea429d520a6d204ab43e6e3539ecd124b197ec92d50cb8079eN.exe

  • Size

    93KB

  • Sample

    241129-tr7fwsvmhv

  • MD5

    cafbacc31cdd3ecece60d7128cf8bc90

  • SHA1

    ab73f8a73bf1df39143e55e0c49a61238bf6cbca

  • SHA256

    58a4ab673e72f1ea429d520a6d204ab43e6e3539ecd124b197ec92d50cb8079e

  • SHA512

    2d3a20a496abd456b5732d8a119cc3b73bbd5bdaf7c79943c7c6c7a98254c0f6a2b017acc75ff894e06086206734841e740b1b47a864c0b1a2935c692d0457fc

  • SSDEEP

    1536:JxqjQ+P04wsmJC5LpeytM3alnawrRIwxVSHMweio:sr85C5Lpey23alnaEIN/

Malware Config

Extracted

Path

C:\Users\Public\Music\Sample Music\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;">��������������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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> <hr> <b>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> <p>* Tor-chat to always be in touch: <a href<a href<b> </div> </div> </div> <!--tab--> <b> <b> <b> <span style="font-size: 22px">qd7pcafncosqfqu3ha6fcx4h6sr7tzwagzpcdcnytiw3b6varaeqv5yd.onion</span> </b><br><br> </b><br> <!--text data --> </div> </div> <!--tab--> </div> </div> </body> </html>��������������

Extracted

Path

C:\ProgramData\regid.1991-06.com.microsoft\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;">��������������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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> <hr> <b>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> <p>* Tor-chat to always be in touch: <a href<a href<b> </div> </div> </div> <!--tab--> <b> <b> <b> <span style="font-size: 22px">qd7pcafncosqfqu3ha6fcx4h6sr7tzwagzpcdcnytiw3b6varaeqv5yd.onion</span> </b><br><br> </b><br> <!--text data --> </div> </div> <!--tab--> </div> </div> </body> </html>��������������

Targets

    • Target

      58a4ab673e72f1ea429d520a6d204ab43e6e3539ecd124b197ec92d50cb8079eN.exe

    • Size

      93KB

    • MD5

      cafbacc31cdd3ecece60d7128cf8bc90

    • SHA1

      ab73f8a73bf1df39143e55e0c49a61238bf6cbca

    • SHA256

      58a4ab673e72f1ea429d520a6d204ab43e6e3539ecd124b197ec92d50cb8079e

    • SHA512

      2d3a20a496abd456b5732d8a119cc3b73bbd5bdaf7c79943c7c6c7a98254c0f6a2b017acc75ff894e06086206734841e740b1b47a864c0b1a2935c692d0457fc

    • SSDEEP

      1536:JxqjQ+P04wsmJC5LpeytM3alnawrRIwxVSHMweio:sr85C5Lpey23alnaEIN/

    • Detect Neshta payload

    • GlobeImposter

      GlobeImposter is a ransomware first seen in 2017.

    • Globeimposter family

    • Neshta

      Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

    • Neshta family

    • Renames multiple (7521) files with added filename extension

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

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies system executable filetype association

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

MITRE ATT&CK Enterprise v15

Tasks