Analysis

  • max time kernel
    150s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    06-04-2023 18:06

General

  • Target

    fast.bin.exe

  • Size

    56KB

  • MD5

    003bcff6e2fc2dd692631b7461cc516c

  • SHA1

    da15cf4fafe2760dc29c01e8f0ba0e803a6e3b83

  • SHA256

    33d32078ebe0c9429e405fdeb347dfb1ba5543e61d1179d13edffc7943b57640

  • SHA512

    1d79f576169e87c8a94df0f72c4c7f4333390c83bc72dbaeea8489d95fe6a16123438f9658592c0c76eb6df0e2154716d8742d965e7814a7e547ce8de4165345

  • SSDEEP

    768:evrNNeRBl5JFTXqwXrkgrn/9/HiDKGwRj4RcTdyH4pYT3nPKVU1E7sClXo2xSqMN:wNeRBl5PT/rx1mzwRMSTdLpJ7+O

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; } </style> </head> <body> <div class='header'> <img src='data:image/png;base64,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'> <div>All your files have been encrypted!</div> </div> <div class='bold'>All your files have been encrypted due to a security issue with your computer. If you want to restore them, write to us by email <span class='mark'>[email protected]</span></div> <div class='bold'>If you have not received a response within 24 hours, write to us at Jabber: [email protected]</div> <div class='bold'>Write this ID in the title of your message <span class='mark'>842093B2-3327</span></div> <div> You will have to pay for decryption in bitcoins. The price depends on how quickly you write to us. After payment, we will send you a tool that will decrypt all your files. </div> <div class='note info'> <div class='title'>Free decryption as guarantee</div> <ul>We can decrypt 1 small, not important file as proof of decryption. 1 megabyte of an unarchived file. We never decrypt important files for testing, such as XLS, databases and other important files. </ul> </div> <div class='note info'> <div class='title'>How to obtain Bitcoins</div> <ul> Write to us and we will instruct you how to buy Bitcoin <br> Attention! If you ask for help from third parties, know that they raise the price (they add their own price from ours). Contact us for help and we will help you buy Bitcoin, it's not difficult. Our experts will fully tell you how to buy bitcoin. </ul> </div> <div class='title'>Jabber client installation instructions:</div> <div class='note info'> <ul> <li>Download the jabber (Pidgin) client from https://pidgin.im/download/windows/</li> <li>After installation, the Pidgin client will prompt you to create a new account.</li> <li>Click "Add"</li><li>In the "Protocol" field, select XMPP</li> <li>In "Username" - come up with any name</li> <li>In the field "domain" - enter any jabber-server, there are a lot of them, for example - exploit.im</li> <li>Create a password</li><li>At the bottom, put a tick "Create account"</li> <li>Click add</li> <li>If you selected "domain" - exploit.im, then a new window should appear in which you will need to re-enter your data:</li> <ul> <li>User</li> <li>password</li> <li>You will need to follow the link to the captcha (there you will see the characters that you need to enter in the field below)</li> </ul> <li>If you don't understand our Pidgin client installation instructions, you can find many installation tutorials on youtube - <a href = "https://www.youtube.com/results?search_query=pidgin+jabber+install">https://www.youtube.com/results?search_query=pidgin+jabber+install</a></li> </ul> </div> <div class='note alert'> <div class='title'>Attention!</div> <ul> <li>Do not rename encrypted files.</li> <li>Do not try to decrypt your data using third party software, this may lead to irreversible data loss.</li> <li>No one else will be able to return your files except us!</li> </ul> </div> </body> </html>
Emails

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

[email protected]</div>

URLs

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

https://pidgin.im/download/windows/</li>

Extracted

Path

C:\Users\Admin\Desktop\info.hta

Ransom Note
All your files have been encrypted! All your files have been encrypted due to a security issue with your computer. If you want to restore them, write to us by email [email protected] If you have not received a response within 24 hours, write to us at Jabber: [email protected] Write this ID in the title of your message 842093B2-3327 You will have to pay for decryption in bitcoins. The price depends on how quickly you write to us. After payment, we will send you a tool that will decrypt all your files. Free decryption as guarantee We can decrypt 1 small, not important file as proof of decryption. 1 megabyte of an unarchived file. We never decrypt important files for testing, such as XLS, databases and other important files. How to obtain Bitcoins Write to us and we will instruct you how to buy Bitcoin Attention! If you ask for help from third parties, know that they raise the price (they add their own price from ours). Contact us for help and we will help you buy Bitcoin, it's not difficult. Our experts will fully tell you how to buy bitcoin. Jabber client installation instructions: Download the jabber (Pidgin) client from https://pidgin.im/download/windows/ After installation, the Pidgin client will prompt you to create a new account. Click "Add" In the "Protocol" field, select XMPP In "Username" - come up with any name In the field "domain" - enter any jabber-server, there are a lot of them, for example - exploit.im Create a password At the bottom, put a tick "Create account" Click add If you selected "domain" - exploit.im, then a new window should appear in which you will need to re-enter your data: User password You will need to follow the link to the captcha (there you will see the characters that you need to enter in the field below) If you don't understand our Pidgin client installation instructions, you can find many installation tutorials on youtube - https://www.youtube.com/results?search_query=pidgin+jabber+install Attention! Do not rename encrypted files. Do not try to decrypt your data using third party software, this may lead to irreversible data loss. No one else will be able to return your files except us!
URLs

https://pidgin.im/download/windows/

Signatures

  • Phobos

    Phobos ransomware appeared at the beginning of 2019.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies boot configuration data using bcdedit 1 TTPs 4 IoCs
  • Deletes backup catalog 3 TTPs 2 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Modifies Windows Firewall 1 TTPs 2 IoCs
  • 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.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • 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). Likely ransomware behaviour.

  • Interacts with shadow copies 2 TTPs 2 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 60 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.

  • Uses Volume Shadow Copy service COM API

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\fast.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\fast.bin.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:924
    • C:\Users\Admin\AppData\Local\Temp\fast.bin.exe
      "C:\Users\Admin\AppData\Local\Temp\fast.bin.exe"
      2⤵
        PID:1296
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1812
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:676
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2584
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:2332
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:2424
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:2444
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:268
        • C:\Windows\system32\netsh.exe
          netsh advfirewall set currentprofile state off
          3⤵
          • Modifies Windows Firewall
          PID:332
        • C:\Windows\system32\netsh.exe
          netsh firewall set opmode mode=disable
          3⤵
          • Modifies Windows Firewall
          PID:368
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:2228
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:2420
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\info.hta"
        2⤵
        • Modifies Internet Explorer settings
        PID:2496
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2476
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:1376
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2516
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:2644
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:2684
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:2676
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:988
    • C:\Windows\system32\wbengine.exe
      "C:\Windows\system32\wbengine.exe"
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:2664
    • C:\Windows\System32\vdsldr.exe
      C:\Windows\System32\vdsldr.exe -Embedding
      1⤵
        PID:296
      • C:\Windows\System32\vds.exe
        C:\Windows\System32\vds.exe
        1⤵
          PID:1540

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\ProPsWW.cab.id[842093B2-3327].[[email protected]].Devos

          Filesize

          143.1MB

          MD5

          a7794fd61ab8db2ab4075f133e01b5aa

          SHA1

          c31a6b91786008d10ca1387d6c0d70435c6ac120

          SHA256

          d14ec4cee51e6977656e53aed957f28d8c9d62e08ba539e0e5b43a6ddfc763aa

          SHA512

          1c64ef354c30cc0cd9071c1ec699c81713d013c7d03950ef58e5b9a6b82c768f199feeda722cd5dab1e9f557a2799cb38bbcc3e7b4b00d377212bf38703f13fb

        • C:\Users\Admin\Desktop\info.hta

          Filesize

          6KB

          MD5

          9632ea326e79e0927704187fdb0bfbb3

          SHA1

          6bb0bbc9e5985a8176aec04ad6bb8eb15f90edf2

          SHA256

          7374063543526cb81f3006845f9eea88086191ae6f02c1696edffcf03fe15097

          SHA512

          1357d2a2b093572239cf52ec3f006c7d25e4dce6e9878576e2243de6c7dfac0615813168156a1b46786c45111fca4f8d2e3fcc17b2c6666470516d4a59d01d62

        • C:\info.hta

          Filesize

          6KB

          MD5

          9632ea326e79e0927704187fdb0bfbb3

          SHA1

          6bb0bbc9e5985a8176aec04ad6bb8eb15f90edf2

          SHA256

          7374063543526cb81f3006845f9eea88086191ae6f02c1696edffcf03fe15097

          SHA512

          1357d2a2b093572239cf52ec3f006c7d25e4dce6e9878576e2243de6c7dfac0615813168156a1b46786c45111fca4f8d2e3fcc17b2c6666470516d4a59d01d62

        • C:\info.hta

          Filesize

          6KB

          MD5

          9632ea326e79e0927704187fdb0bfbb3

          SHA1

          6bb0bbc9e5985a8176aec04ad6bb8eb15f90edf2

          SHA256

          7374063543526cb81f3006845f9eea88086191ae6f02c1696edffcf03fe15097

          SHA512

          1357d2a2b093572239cf52ec3f006c7d25e4dce6e9878576e2243de6c7dfac0615813168156a1b46786c45111fca4f8d2e3fcc17b2c6666470516d4a59d01d62

        • C:\users\public\desktop\info.hta

          Filesize

          6KB

          MD5

          9632ea326e79e0927704187fdb0bfbb3

          SHA1

          6bb0bbc9e5985a8176aec04ad6bb8eb15f90edf2

          SHA256

          7374063543526cb81f3006845f9eea88086191ae6f02c1696edffcf03fe15097

          SHA512

          1357d2a2b093572239cf52ec3f006c7d25e4dce6e9878576e2243de6c7dfac0615813168156a1b46786c45111fca4f8d2e3fcc17b2c6666470516d4a59d01d62