Overview

overview

10

Static

static

3

Fast.exe

windows7-x64

10

Fast.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    05-07-2024 06:16

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General

  • Target

    Fast.exe

  • Size

    66KB

  • MD5

    87d6d2488b1260e70f4042bf1f292529

  • SHA1

    161f9a79f8197c9b5de1beb7bd4d425d5c23b45b

  • SHA256

    45de59851d68929632346d6f894dc8c1b6a5c4197db83c2e33c60631efc0b39f

  • SHA512

    a9d3930de1ff5849e61d1807c6de4b063790dc03f7e4f3f2101cbddde55002ffcc85d2ff433b753a5936403feedbc93c0f3658ffb5e8051d00ba58641e6afda7

  • SSDEEP

    1536:/NeRBl5PT/rx1mzwRMSTdLpJy/jIlkugRGVy/SR1qo+tEgfNni:/QRrmzwR5JysFV12i

Score
10/10
phobosdefense_evasionevasionexecutionimpactpersistenceprivilege_escalationransomwarespywarestealer

Malware Config

Extracted

Path

C:\info.hta

Ransom Note
<!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 4.01//EN' 'http://www.w3.org/TR/html4/strict.dtd'> <html> <head> <meta charset='windows-1251'> <title>encrypted</title> <HTA:APPLICATION ICON='msiexec.exe' SINGLEINSTANCE='yes' SysMenu="no"> <script language='JScript'> window.moveTo(50, 50); window.resizeTo(screen.width - 100, screen.height - 100); </script> <style type='text/css'> body { font: 15px Tahoma, sans-serif; margin: 10px; line-height: 25px; background: #EDEDED; } img { display:inline-block; } .bold { font-weight: bold; } .mark { background: #D0D0E8; padding: 2px 5px; } .header { text-align: center; font-size: 30px; line-height: 50px; font-weight: bold; margin-bottom:20px; } .info { background: #D0D0E8; border-left: 10px solid #00008B; } .alert { background: #FFE4E4; border-left: 10px solid #FF0000; } .private { border: 1px dashed #000; background: #FFFFEF; } .note { height: auto; padding-bottom: 1px; margin: 15px 0; } .note .title { font-weight: bold; text-indent: 10px; height: 30px; line-height: 30px; padding-top: 10px; } .note .mark { background: #A2A2B5; } .note ul { margin-top: 0; } .note pre { margin-left: 15px; line-height: 13px; font-size: 13px; } .footer { position:fixed; bottom:0; right:0; text-align: right; } .title { margin-left: 0; } .title.sub { margin-left:30px; dispaly:inline-block; } </style> </head> <body> <div class='header'> <img src='data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEAAAABACAQAAAAAYLlVAAAABGdBTUEAALGPC/xhBQAAACBjSFJNAAB6JQAAgIMAAPn/AACA6QAAdTAAAOpgAAA6mAAAF2+SX8VGAAAAAmJLR0QA/4ePzL8AAAAJcEhZcwAACxMAAAsTAQCanBgAAAAHdElNRQfjAwwMJwSFwIn8AAADNklEQVRo3u2ZTUhUURTHfzozmprmZ1pYEmkfJNEmiwwkSEyFECIQpEUboYhqFYHQXlcti9rUKldWBEUiuQpbtDDNzD5G8qM0HRXLRtO5LdJx3puPd++8+xyIztm88zgf/3veufeee18SdimDI1RxnL0U4gbAzxhDdPGCfpZs+49JWTTyFB8iAq8wTju1pDgXvopOliIGX+d57rHPieBuLvLNIvgaD1KvP/x1FiTDCwQTNOkFcJVfCuEFgq+c0he+minF8AJBH2WRnCUph8/nIZVhb2d5w1smEbjYSTn7SQ/TucsFlnWkPxBW6Xc4RkbIoHKooSNshsxRbT98Eb0mtyM04oqgmR6hUNvtrwrnWDa4nOVMVF0XLfw2aPuosBfezQPTmNpiVtFmnpj0W+wBKMFrcPeJ3RYWNfwwWHSSZgdAHX6Du5uWFpl0myqm1KiQrASgnNQQaZFOS4t5nhvkAnbZAbDHIE0wIGHzmsUQKdXkQwlACtsN8ijfJay8zBjkovgBbCLPlAG/hNUcswa5IH4Ayasdzxr5pBbWRRYMstGHYg04QAkH4FbQFSwTCKbdI7mzWVipbMceKtiCCFqO0OeY1caRbAaKOcgOCpQ+WWTyM8EwvfjkTfJoYZDFONqwaPyTHs7LbktlPNMYep2XuE22dfhsHjkS/i+3Wn/SK2EdoE72UeuyGH8rxbbLLjqlkRlb4TAzDo5fIJiOvRTnR+ju9VJuwveC/wASDsD+2h5KUyyQTVZiALzjFt3MsY16mtmqx2mt9BbUw4EQuzpGpVcCLQB8nDBZXmJFDoCeInzFS9ObxwzLmeoBMGA4/QBM4t1IAOHXDi7Zqwg9ACrCWotS8xnQWQCHOGsafzOFOhzLT8NxmoI3RZncULjG1ARA8DHYupxUucbUtxd4ghnw4JI30wdARHneMABx0j8FYD3xCkdefQByKFl9KsOjy6nKNBR0cZRCTjOk1JhrBCCY5r3pZtSS9bZkueSqmljVgPoPDa0Algk4HD8QG8AXph0G8Dk2AC89DgPosFKodvR83G/dtiRzTevtUChP0SCTpBQuM+bI6Bvk51gl96X/FFvzCh9oW0v+H2zO2tYtz/EgAAAAJXRFWHRkYXRlOmNyZWF0ZQAyMDE5LTAzLTEyVDEyOjM5OjA0KzAwOjAwG6lIYwAAACV0RVh0ZGF0ZTptb2RpZnkAMjAxOS0wMy0xMlQxMjozOTowNCswMDowMGr08N8AAAAASUVORK5CYII='> <div>Dear Management</div> </div> <div class='bold'>&nbsp;&nbsp;&nbsp;If you are reading this message, it means that:<br><ul> - your network infrastructure has been compromised,<br> - critical data was leaked,<br> - files are encrypted</span></div></ul> <div class='bold'>&nbsp;&nbsp;&nbsp;The best and only thing you can do is to contact us to settle the matter before any losses occurs.</span></div> <div class='bold'>&nbsp;&nbsp;&nbsp;Onion site: <span class='mark'><a href='http://xb6q2aggycmlcrjtbjendcnnwpmmwbosqaugxsqb4nx6cmod3emy7sad.onion'>http://xb6q2aggycmlcrjtbjendcnnwpmmwbosqaugxsqb4nx6cmod3emy7sad.onion</a></span></div> <div class='bold'>&nbsp;&nbsp;&nbsp;Telegram channel: <span class='mark'><a href='https://t.me/eightbase'>https://t.me/eightbase</a></span></div> </div> <div class='note info'> <div class='title'>1. THE FOLLOWING IS STRICTLY FORBIDDEN</div> <div class='title.sub'>&nbsp;&nbsp;&nbsp;1.1 EDITING FILES ON HDD.</div> <ul>Renaming, copying or moving any files could DAMAGE the cipher and decryption will be impossible.</ul> <div class='title.sub'>&nbsp;&nbsp;&nbsp;1.2 USING THIRD-PARTY SOFTWARE.</div> <ul>Trying to recover with any software can also break the cipher and file recovery will become a problem.</ul> <div class='title.sub'>&nbsp;&nbsp;&nbsp;1.3 SHUTDOWN OR RESTART THE PC.</div> <ul>Boot and recovery errors can also damage the cipher. Sorry about that, but doing so is entirely at your own risk.</ul> </div> <div class='note info'> <div class='title'>2. EXPLANATION OF THE SITUATION</div> <div class='title.sub'>&nbsp;&nbsp;&nbsp;2.1 HOW DID THIS HAPPEN</div> <ul>The security of your IT perimeter has been compromised (it's not perfect at all). We encrypted your workstations and servers to make the fact of the intrusion visible and to prevent you from hiding critical data leaks. We spent a lot of time researching and finding out the most important directories of your business, your weak points. We have already downloaded a huge amount of critical data and analyzed it. Now its fate is up to you, it will either be deleted or sold, or shared with the media.</ul> <div class='title.sub'>&nbsp;&nbsp;&nbsp;2.2 VALUABLE DATA WE USUALLY STEAL:</div> <ul>- Databases, legal documents, personal information.<br> - Audit reports.<br> - Audit SQL database.<br> - Any financial documents (Statements, invoices, accounting, transfers etc.).<br> - Work files and corporate correspondence.<br> - Any backups.<br> - Confidential documents.</ul> <div class='title.sub'>&nbsp;&nbsp;&nbsp;2.3 TO DO LIST (best practies)</div> <ul>- Contact us as soon as possible. - Contact us only in our live chat, otherwise you can run into scammers. - Purchase our decryption tool and decrypt your files. There is no other way to do this. - Realize that dealing with us is the shortest way to success and secrecy. - Give up the idea of using decryption help programs, otherwise you will destroy the system permanently. - Avoid any third-party negotiators and recovery groups. They can become the source of leaks.</ul> </div> <div class='note info'> <div class='title'>3. POSSIBLE DECISIONS</div> <div class='title.sub'>&nbsp;&nbsp;&nbsp;3.1 NOT MAKING THE DEAL</div> <ul>- After 4 days starting tomorrow your leaked data will be Disclosed or sold.<br> - We will also send the data to all interested supervisory organizations and the media.<br> - Decryption key will be deleted permanently and recovery will be impossible.<br> - Losses from the situation can be measured based on your annual budget.</ul> <div class='title.sub'>&nbsp;&nbsp;&nbsp;3.2 MAKING THE WIN-WIN DEAL</div> <ul>- Databases, legal documents, personal information.<br> - You will get the only working Decryption Tool and the how-to-use Manual.<br> - You will get our guarantees (with log provided) of non-recovarable deletion of all your leaked data.<br> - You will get our guarantees of secrecy and removal of all traces related to the deal in the Internet.<br> - You will get our security report on how to fix your security breaches.</ul> </div> </div> <div class='note info'> <div class='title'>4. EVIDENCE OF THE LEAKAGE</div> <div class='bold'>&nbsp;&nbsp;&nbsp;In our contact form or mail:</span></div> <div class='bold'>&nbsp;&nbsp;&nbsp;Onion site: <span class='mark'><a href='http://xb6q2aggycmlcrjtbjendcnnwpmmwbosqaugxsqb4nx6cmod3emy7sad.onion'>http://xb6q2aggycmlcrjtbjendcnnwpmmwbosqaugxsqb4nx6cmod3emy7sad.onion</a></span></div> <ul> <li>Write us to the mails: <span class='mark'>[email protected]</span></li> or <span class='mark'>[email protected]</span> <li>Write this ID in the title of your message <span class='mark'>2BF70C13-3483</span></li> </ul> </div> </div> <div class='note info'> <div class='title'>5. HOW TO CONTACT US</div> <ul> 5.1 Download and install TOR Browser <a href='https://torproject.org'>https://torproject.org</a><br> 5.2 Go to our contact form website at <a href='http://xb6q2aggycmlcrjtbjendcnnwpmmwbosqaugxsqb4nx6cmod3emy7sad.onion'>http://xb6q2aggycmlcrjtbjendcnnwpmmwbosqaugxsqb4nx6cmod3emy7sad.onion</a><br> 5.3 You can request sample files chat to review leaked data samples.<br> 5.4 In case TOR Browser is restricted in your area use VPN services.<br> 5.5 All leaked Data samples will be Disclosed in 4 Days if you remain silent.<br> 5.6 Your Decryption keys will be permanently destroyed at the moment the leaked Data is Disclosed. </ul> </div> <div class='note alert'> <div class='title'>6. RESPONSIBILITY</div> <div class='title.sub'>&nbsp;&nbsp;&nbsp;6.1 Breaking critical points of this offer will cause:</div> <ul> <li>Deletion of your decryption keys.</li> <li>Immediate sale or complete Disclosure of your leaked data.</li> <li>Notification of government supervision agencies, your competitors and clients.</li> </ul> </div> </body> </html>
Emails

class='mark'>[email protected]</span></li>

class='mark'>[email protected]</span>
URLs

http://www.w3.org/TR/html4/strict.dtd'>

Signatures

  • Phobos

    Phobos ransomware appeared at the beginning of 2019.

    ransomwarephobos
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomwaredefense_evasionimpactexecution
  • Modifies boot configuration data using bcdedit 1 TTPs 4 IoCs
    ransomwareevasion
  • Renames multiple (322) files with added filename extension

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

    ransomware
  • Deletes backup catalog 3 TTPs 2 IoCs

    Uses wbadmin.exe to inhibit system recovery.

    ransomware
  • Modifies Windows Firewall 2 TTPs 2 IoCs
    evasion
  • Drops startup file 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops desktop.ini file(s) 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

    persistenceprivilege_escalation
  • Interacts with shadow copies 3 TTPs 2 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
    adwarespyware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\Fast.exe
    "C:\Users\Admin\AppData\Local\Temp\Fast.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1984
    • C:\Users\Admin\AppData\Local\Temp\Fast.exe
      "C:\Users\Admin\AppData\Local\Temp\Fast.exe"
      2⤵
        PID:1872
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2884
        • C:\Windows\system32\netsh.exe
          netsh advfirewall set currentprofile state off
          3⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          PID:2652
        • C:\Windows\system32\netsh.exe
          netsh firewall set opmode mode=disable
          3⤵
          • Modifies Windows Firewall
          • Event Triggered Execution: Netsh Helper DLL
          PID:304
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2980
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:2636
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:324
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:2424
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:2848
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:1680
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:2060
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:772
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:2400
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "F:\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:2760
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1656
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:880
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1780
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:2816
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:1824
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:2820
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2472
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2392
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:1040
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
          PID:2064

        Network

        MITRE ATT&CK Enterprise v15

        Reconnaissance

        Resource Development

        Initial Access

        Execution

        Command and Scripting Interpreter

        1
        T1059

        Windows Management Instrumentation

        1
        T1047

        Persistence

        Boot or Logon Autostart Execution

        1
        T1547

        Registry Run Keys / Startup Folder

        1
        T1547.001

        Create or Modify System Process

        1
        T1543

        Windows Service

        1
        T1543.003

        Event Triggered Execution

        1
        T1546

        Netsh Helper DLL

        1
        T1546.007

        Privilege Escalation

        Boot or Logon Autostart Execution

        1
        T1547

        Registry Run Keys / Startup Folder

        1
        T1547.001

        Create or Modify System Process

        1
        T1543

        Windows Service

        1
        T1543.003

        Event Triggered Execution

        1
        T1546

        Netsh Helper DLL

        1
        T1546.007

        Defense Evasion

        Direct Volume Access

        1
        T1006

        Impair Defenses

        1
        T1562

        Disable or Modify System Firewall

        1
        T1562.004

        Indicator Removal

        3
        T1070

        File Deletion

        3
        T1070.004

        Modify Registry

        2
        T1112

        Credential Access

        Unsecured Credentials

        1
        T1552

        Credentials In Files

        1
        T1552.001

        Discovery

        Query Registry

        1
        T1012

        System Information Discovery

        1
        T1082

        Lateral Movement

        Collection

        Data from Local System

        1
        T1005

        Command and Control

        Exfiltration

        Impact

        Inhibit System Recovery

        4
        T1490

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\info.hta
          Filesize

          9KB

          MD5

          b733d89c78482f099591e8eb335d2b85

          SHA1

          eae5b4c0893030aa2839e80f401d076cdec90e9e

          SHA256

          692323b4843e44d37d290e5f384a974efd15bb48924038ee9e4f8522b9682314

          SHA512

          4ac518fb4519609febb506a1b36b86be58857010a29348a31be22450aa6aecc1e3f4a03dd464cf5261ab479fd14d625361e2e8d75d68e9cde5637ed7715c8e98

          Download Submit