Analysis

  • max time kernel
    184s
  • max time network
    196s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    11-02-2022 06:51

General

  • Target

    61d8cda33e1358a47672193adf8ecb71174c0d581504e3c6fc0269ace8f32485.exe

  • Size

    54KB

  • MD5

    2f799a20585cdf0d35902abe9dac0734

  • SHA1

    2af9bd7b5988d72dfac3e75f94c9c59bd8aec936

  • SHA256

    61d8cda33e1358a47672193adf8ecb71174c0d581504e3c6fc0269ace8f32485

  • SHA512

    9a9d35af75473aa90cdcf6583bfa6b1d04411fbf2745affa801ca586fa442826344d892580ee5ccf68966e7eede6b29b2af66c31f0c97e4ebac7e637992e7fe4

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: #4A83FD; } .tabs1 .identi { margin-left: 15px; 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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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>&#9760; Your files are encrypted! &#9760;</h1> <hr/> <h3>All your important data has been encrypted.</h3> <br/> <div class="text"> <!--text data --> To recover data you need decryptor.</br> To get the decryptor you should:</br> <p>Send 1 test image or text file <span> [email protected] (or [email protected] if you have not received a response) </span>.</br> 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> <center>Attention!</center></br> <ul> <li>Only [email protected] can decrypt your files</li> <li>Do not trust anyone [email protected] </li> <li>Do not attempt to remove the program or run the anti-virus tools</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

  • GlobeImposter

    GlobeImposter is a ransomware first seen in 2017.

  • Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
  • Modifies extensions of user files 12 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops desktop.ini file(s) 21 IoCs
  • Drops file in Windows directory 1 IoCs
  • Program crash 2 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies data under HKEY_USERS 45 IoCs
  • Modifies registry class 30 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\61d8cda33e1358a47672193adf8ecb71174c0d581504e3c6fc0269ace8f32485.exe
    "C:\Users\Admin\AppData\Local\Temp\61d8cda33e1358a47672193adf8ecb71174c0d581504e3c6fc0269ace8f32485.exe"
    1⤵
    • Modifies extensions of user files
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Suspicious behavior: EnumeratesProcesses
    PID:2664
  • C:\Windows\system32\MusNotifyIcon.exe
    %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
    1⤵
    • Checks processor information in registry
    PID:2124
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k NetworkService -p
    1⤵
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    PID:3848
  • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
    "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
    1⤵
    • Enumerates system info in registry
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2588
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2588 -s 4388
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      PID:3912
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 2588 -s 4388
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      PID:2308
  • C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -pss -s 408 -p 2588 -ip 2588
    1⤵
    • Suspicious use of NtCreateProcessExOtherParentProcess
    • Suspicious use of WriteProcessMemory
    PID:2104

Network

MITRE ATT&CK Enterprise v6

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Downloads