Analysis

  • max time kernel
    150s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/02/2025, 20:50

General

  • Target

    d16518abb5dc4d76f4f423d02b0b8c99fe5edb89edf3c60ca64ebb2a6879a15e.exe

  • Size

    55KB

  • MD5

    6af267d388242b54a87d0d0b6eb0ccd8

  • SHA1

    eeeec084ebf73ca9d6600452e2997a469b4996c9

  • SHA256

    d16518abb5dc4d76f4f423d02b0b8c99fe5edb89edf3c60ca64ebb2a6879a15e

  • SHA512

    270e9ee5ec4fd63045a8e6a704106e178bd20788b73e7e1a9e4db83eaa629b38dd55bf7a202d534c0d91a20ce76e7b21d14335f94366f4acbf8a20194cfadce2

  • SSDEEP

    768:emtihjk9hlg4tBLuZuZJHe4ndXxnWlHznD/VwrEQYtqVi6S9JWvZ/KWwhQMNzLm9:eTjkfV+KJolntwrbDSTWvTwhQMhmpdL

Malware Config

Extracted

Path

C:\Users\Public\Pictures\how_to_back_files.html

Ransom Note
<html> <style type="text/css"> body { background-color: #404040; } { margin: 0; padding: 0; } h1, h3{ text-align: center; text-transform: uppercase; font-weight: normal; } /*---*/ .tabs1{ width: 800px; display: block; margin: auto; position: relative; } .tabs1 .head{ text-align: center; float: top; text-transform: uppercase; font-weight: normal; display: block; padding: 5px; color: #FF0000; background: #303030; } .tabs1 .identi { margin-left: 0px; line-height: 13px; font-size: 13px; text-align: center; float: top; display: block; padding: 15px; background: #303030; color: #DFDFDF; } /*---*/ .tabs{ width: 800px; display: block; margin: auto; position: relative; } .tabs .tab{ float: left; display: block; } .tabs .tab>input[type="radio"] { position: absolute; top: -9999px; left: -9999px; } .tabs .tab>label { display: block; padding: 6px 21px; font-size: 18x; text-transform: uppercase; cursor: pointer; position: relative; color: #FFF; background: #4A83FD; } .tabs .content { z-index: 0;/* or display: none; */ overflow: hidden; width: 800px; /*padding: 25px;*/ position: absolute; top: 32px; left: 0; background: #303030; color: #DFDFDF; opacity:0; transition: opacity 400ms ease-out; } .tabs .content .text{ width: 700px; padding: 25px; } .tabs>.tab>[id^="tab"]:checked + label { top:0; background: #303030; color: #F5F5F5; } .tabs>.tab>[id^="tab"]:checked ~ [id^="tab-content"] { z-index: 1;/* or display: block; */ opacity: 1; transition: opacity 400ms ease-out; } </style> <head> <meta charset="utf-8"> <title>HOW TO DECRYPT YOUR FILES</title> </head> <body> <div class="tabs1"> <div class="head" ><h3>Your personal ID</h3></div> <div class="identi"> <pre>��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p> </pre><!-- !!! dont changing this !!! --> </div> </div> <!-- --> <div class="tabs"> <!--tab--> <div class="tab"> <input type="radio" name="tabs" checked="checked" id="tab1" /> <label for="tab1">English</label> <div id="tab-content1" class="content"> <h1>&#9763; Your files are encrypted! &#9763;</h1> <hr/> <h3> &#11015 To decrypt, follow the instructions below. &#11015 </h3> <br/> <div class="text"> <!--text data --> To recover data you need decryptor.</br> To get the decryptor you should:</br> <p>Send 1 crypted test image or text file or document to <span> <font color="FF0000"> [email protected] </font></span></br> (Or alternate mail <font color="FF0000"> [email protected] </font>)<p> In the letter include your personal ID (look at the beginning of this document).</p> We will give you the decrypted file and assign the price for decryption all files</p> After we send you instruction how to pay for decrypt and after payment you will receive a decryptor and instructions We can decrypt one file in quality the evidence that we have the decoder.</br> <hr color=red> <center><p style="color:#FF0000">MOST IMPORTANT!!!</p></center> <center><p style="color:#FF0000"> Do not contact other services that promise to decrypt your files, this is fraud on their part! They will buy a decoder from us, and you will pay more for his services. No one, except [email protected], will decrypt your files.</p></center> <hr color=red> <ul> <li>Only [email protected] can decrypt your files</li> <li>Do not trust anyone besides [email protected]</li> <li>Antivirus programs can delete this document and you can not contact us later.</li> <li>Attempts to self-decrypting files will result in the loss of your data</li> <li>Decoders other users are not compatible with your data, because each user's unique encryption key</li> </ul> <!--text data --> </div> </div> </div> <!--tab--> </ul> <!--text data --> </div> </div> <!--tab--> </div> </div> </body> </html>

Signatures

  • Renames multiple (5815) files with added filename extension

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

  • Reads user/profile data of web browsers 3 TTPs

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

  • Drops desktop.ini file(s) 29 IoCs
  • Drops file in Program Files directory 64 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

Processes

  • C:\Users\Admin\AppData\Local\Temp\d16518abb5dc4d76f4f423d02b0b8c99fe5edb89edf3c60ca64ebb2a6879a15e.exe
    "C:\Users\Admin\AppData\Local\Temp\d16518abb5dc4d76f4f423d02b0b8c99fe5edb89edf3c60ca64ebb2a6879a15e.exe"
    1⤵
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    PID:2984

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Public\Pictures\how_to_back_files.html

    Filesize

    5KB

    MD5

    635843dd46c359a6181c729cc81c9369

    SHA1

    5d838a415947ac851abd98a18c7052b52e8316c0

    SHA256

    e6de43625918808b1144ca3ccef571da6643d0c7d5ebab64f8a3bf3136eb0c21

    SHA512

    5feb73a133f78de79c14f23a08982690719ce16b6ed1d08b98ca00eed47ff794e0e8ded5901fe9b92e5170f18c4a1c2e84011a7b0e8d51c72910bbb358772f39

  • memory/2984-0-0x0000000000400000-0x000000000040EC00-memory.dmp

    Filesize

    59KB

  • memory/2984-445-0x0000000000400000-0x000000000040EC00-memory.dmp

    Filesize

    59KB