Analysis

  • max time kernel
    166s
  • max time network
    191s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    11-02-2022 07:02

General

  • Target

    3a42c34671b164812ebbb2a299f14ea11c206c9e57773683888239da203e0dff.exe

  • Size

    53KB

  • MD5

    71e99529c74cd2203188c802ec1b0da9

  • SHA1

    f0bc068e483f703308e5af56aa41060896893381

  • SHA256

    3a42c34671b164812ebbb2a299f14ea11c206c9e57773683888239da203e0dff

  • SHA512

    ab47ed31944215884d61db1cd1f54bf71e5135ddc7f16ff4aadd547f2409e87ab4038b7400fe83cec1746b084d6377eccbc1dcca1c2de642bd0dfcb0b74883c7

Malware Config

Extracted

Path

C:\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: 15px; color: #000000; background: #ff0000; } .tabs1 .identi { text-align: center; float: top; display: block; padding: 15px; background: #303030; color: #DFDFDF; } /*---*/ .tabs{ width: 800px; display: block; margin: auto; position: relative; /*height: 30px;*/ background: red; } .tabs .tab{ /*float: left;*/ display: inline-block; } .tabs .tab>input[type="radio"] { position: absolute; top: -9999px; left: -9999px; } .tabs .tab>label { display: block; padding: 6px 15px; font-size: 18x; text-transform: uppercase; cursor: pointer; position: relative; color: #FFF; background: #ff0000; } .tabs .content { z-index: 0;/* or display: none; */ overflow: hidden; width: 800px; /*padding: 25px;*/ position: absolute; top: 100%; 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; outline: 1px solid red; } .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="tabs"> <!--tab--> <div class="tab"> <input type="radio" name="tabs" checked="on" id="tab1" /> <div id="tab-content1" class="content"> <h1>Your files are encrypted! </h1> <hr/> <div class="text"> <!--text data --> <center>Your documents, photos, databases and all the rest files encrypted cryptographically strong algoritm.<br> Without a secret key stored with us, the restoration of your files is impossible</center> <br> <center>----------------------------------------------------------</center> You will be able to restore files so: <ul><li>To contact us by e-mail: <strong> [email protected] </strong> & send your personal ID and 3 crypted files, up to 3 MB in size everyone.</li> <li>We will decipher them, as proof that we can do this. Also you receive the instruction where and how many it is necessary to pay.</li> <li>You pay and confirm payment.</li> <li> after payment you receive the DECRYPTOR program, which restored ALL YOUR FILES.</li></ul> <center>---------------------------------------------------------</center> <strong>Your personal ID:</strong> <pre>�����������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pre> <center>----------------------------- P.S. ----------------------------------</center> <ul><li>It is in your interest to respond as soon as possible to ensure the recovery of your files, because we will not store your decryption keys on our server for a long time.</li> <li>If we do not respond to your message for more than 48 hours, write to the backup email : <strong> [email protected] </strong></li></ul> <!--text data --> </div> </div> </div> </body> </html>������������

Signatures

  • GlobeImposter

    GlobeImposter is a ransomware first seen in 2017.

  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops desktop.ini file(s) 20 IoCs
  • Drops file in Windows directory 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3a42c34671b164812ebbb2a299f14ea11c206c9e57773683888239da203e0dff.exe
    "C:\Users\Admin\AppData\Local\Temp\3a42c34671b164812ebbb2a299f14ea11c206c9e57773683888239da203e0dff.exe"
    1⤵
    • Modifies extensions of user files
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    PID:4716
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:3604
  • C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
    C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:3884

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/3604-130-0x000001E74C770000-0x000001E74C780000-memory.dmp

    Filesize

    64KB

  • memory/3604-131-0x000001E74CEE0000-0x000001E74CEF0000-memory.dmp

    Filesize

    64KB

  • memory/3604-132-0x000001E74F3F0000-0x000001E74F3F4000-memory.dmp

    Filesize

    16KB