Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/07/2023, 00:27

General

  • Target
    52661e5c4f8503541a5f361cfa8e4518f852907365e23fdfcc8472fea67df12b.exe
  • Size 243KB
  • Sample230714-ar78msbf78
  • SHA256 52661e5c4f8503541a5f361cfa8e4518f852907365e23fdfcc8472fea67df12b
  • MD5 SHA1 SHA512 SSDEEP

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>cartilage</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: #C6B5C4; } img { display:inline-block; } .bold { font-weight: bold; } .mark { background: #B5CC8E; padding: 2px 5px; } .header { text-align: center; font-size: 30px; line-height: 50px; font-weight: bold; margin-bottom:20px; } .info { background: #e6ecf2; border-left: 10px solid #B58CB2; } .alert { background: #FFE4E4; border-left: 10px solid #FFA07A; } .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 problem with your PC.</div> <div class='bold'>If you want to restore them, write us to the e-mail <span class='mark'>[email protected]</span></div> <div class='bold'>Or write us to the Tox: <span class='mark'>78E21CFF7AA85F713C1530AEF2E74E62830BEE77238F4B0A73E5E3251EAD56427BF9F7A1A074</span></div> <div class='bold'>Write this ID in the title of your message <span class='mark'>BC954220-3483</span></div> <div> You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the tool that will decrypt all your files. </div> <div class='note info'> <div class='title'>Free decryption as guarantee</div> <ul>Before paying you can send us up to 3 files for free decryption. The total size of files must be less than 4Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.) </ul> </div> <div class='note info'> <div class='title'>How to obtain Bitcoins</div> <ul> The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click 'Buy bitcoins', and select the seller by payment method and price. <br><a href='https://localbitcoins.com/buy_bitcoins'>https://localbitcoins.com/buy_bitcoins</a> <br> Also you can find other places to buy Bitcoins and beginners guide here: <br><a href='http://www.coindesk.com/information/how-can-i-buy-bitcoins/'>http://www.coindesk.com/information/how-can-i-buy-bitcoins/</a> </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, it may cause permanent data loss.</li> <li>Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.</li> </ul> </div> </body> </html>
Emails
URLs
  • http://www.w3.org/TR/html4/strict.dtd'>

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 problem with your PC. If you want to restore them, write us to the e-mail [email protected] Or write us to the Tox: 78E21CFF7AA85F713C1530AEF2E74E62830BEE77238F4B0A73E5E3251EAD56427BF9F7A1A074 Write this ID in the title of your message BC954220-3483 You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the tool that will decrypt all your files. Free decryption as guarantee Before paying you can send us up to 3 files for free decryption. The total size of files must be less than 4Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.) How to obtain Bitcoins The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click 'Buy bitcoins', and select the seller by payment method and price. https://localbitcoins.com/buy_bitcoins Also you can find other places to buy Bitcoins and beginners guide here: http://www.coindesk.com/information/how-can-i-buy-bitcoins/ Attention! Do not rename encrypted files. Do not try to decrypt your data using third party software, it may cause permanent data loss. Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.

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
  • Renames multiple (474) files with added filename extension

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

  • Deletes backup catalog 3 TTPs 2 IoCs

    Uses wbadmin.exe to inhibit system recovery.

  • Modifies Windows Firewall 1 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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).

  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 4 IoCs

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

  • Interacts with shadow copies 2 TTPs 2 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 42 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\52661e5c4f8503541a5f361cfa8e4518f852907365e23fdfcc8472fea67df12b.exe
    "C:\Users\Admin\AppData\Local\Temp\52661e5c4f8503541a5f361cfa8e4518f852907365e23fdfcc8472fea67df12b.exe"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3136
    • C:\Users\Admin\AppData\Local\Temp\52661e5c4f8503541a5f361cfa8e4518f852907365e23fdfcc8472fea67df12b.exe
      "C:\Users\Admin\AppData\Local\Temp\52661e5c4f8503541a5f361cfa8e4518f852907365e23fdfcc8472fea67df12b.exe"
      2⤵
        PID:4296
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4296 -s 460
          3⤵
          • Program crash
          PID:2352
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4660
        • C:\Windows\system32\netsh.exe
          netsh advfirewall set currentprofile state off
          3⤵
          • Modifies Windows Firewall
          PID:3544
        • C:\Windows\system32\netsh.exe
          netsh firewall set opmode mode=disable
          3⤵
          • Modifies Windows Firewall
          PID:1292
      • C:\Windows\system32\cmd.exe
        "C:\Windows\system32\cmd.exe"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1248
        • C:\Windows\system32\vssadmin.exe
          vssadmin delete shadows /all /quiet
          3⤵
          • Interacts with shadow copies
          PID:4620
        • C:\Windows\System32\Wbem\WMIC.exe
          wmic shadowcopy delete
          3⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:4972
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} bootstatuspolicy ignoreallfailures
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:4504
        • C:\Windows\system32\bcdedit.exe
          bcdedit /set {default} recoveryenabled no
          3⤵
          • Modifies boot configuration data using bcdedit
          PID:924
        • C:\Windows\system32\wbadmin.exe
          wbadmin delete catalog -quiet
          3⤵
          • Deletes backup catalog
          PID:3952
      • C:\Windows\SysWOW64\mshta.exe
        "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
        2⤵
          PID:724
        • C:\Windows\SysWOW64\mshta.exe
          "C:\Windows\SysWOW64\mshta.exe" "C:\users\public\desktop\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
          2⤵
            PID:3324
          • C:\Windows\SysWOW64\mshta.exe
            "C:\Windows\SysWOW64\mshta.exe" "C:\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
            2⤵
              PID:540
            • C:\Windows\SysWOW64\mshta.exe
              "C:\Windows\SysWOW64\mshta.exe" "F:\info.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
              2⤵
                PID:3256
              • C:\Windows\system32\cmd.exe
                "C:\Windows\system32\cmd.exe"
                2⤵
                • Suspicious use of WriteProcessMemory
                PID:4672
                • C:\Windows\system32\vssadmin.exe
                  vssadmin delete shadows /all /quiet
                  3⤵
                  • Interacts with shadow copies
                  PID:2892
                • C:\Windows\System32\Wbem\WMIC.exe
                  wmic shadowcopy delete
                  3⤵
                  • Suspicious use of AdjustPrivilegeToken
                  PID:628
                • C:\Windows\system32\bcdedit.exe
                  bcdedit /set {default} bootstatuspolicy ignoreallfailures
                  3⤵
                  • Modifies boot configuration data using bcdedit
                  PID:4604
                • C:\Windows\system32\bcdedit.exe
                  bcdedit /set {default} recoveryenabled no
                  3⤵
                  • Modifies boot configuration data using bcdedit
                  PID:1056
                • C:\Windows\system32\wbadmin.exe
                  wbadmin delete catalog -quiet
                  3⤵
                  • Deletes backup catalog
                  PID:3876
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4296 -ip 4296
              1⤵
                PID:5088
              • C:\Windows\system32\vssvc.exe
                C:\Windows\system32\vssvc.exe
                1⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:452
              • C:\Windows\system32\wbengine.exe
                "C:\Windows\system32\wbengine.exe"
                1⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:520
              • C:\Windows\System32\vdsldr.exe
                C:\Windows\System32\vdsldr.exe -Embedding
                1⤵
                  PID:3348
                • C:\Windows\System32\vds.exe
                  C:\Windows\System32\vds.exe
                  1⤵
                  • Checks SCSI registry key(s)
                  PID:404

                Network

                      MITRE ATT&CK Enterprise v6

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      AppvIsvSubsystems64.dll.id[BC954220-3483].[[email protected]].8base

                      • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems64.dll.id[BC954220-3483].[[email protected]].8base
                      • Size 3.2MB
                      • SHA256 bd5d9e5251d0af55f6e3e3ab1675e06c56d4bc66324ef3a2b24bf34f2e1faff3
                      • MD5 SHA1 SHA512 SSDEEP

                      info.hta

                      • Path C:\Users\Admin\Desktop\info.hta
                      • Size 5KB
                      • SHA256 908cd8733a9106d32250415b0bbb0bcc05ca06ff8c2854c2589909021b644361
                      • MD5 SHA1 SHA512 SSDEEP

                      info.hta

                      • Path C:\info.hta
                      • Size 5KB
                      • SHA256 908cd8733a9106d32250415b0bbb0bcc05ca06ff8c2854c2589909021b644361
                      • MD5 SHA1 SHA512 SSDEEP

                      info.hta

                      • Path C:\info.hta
                      • Size 5KB
                      • SHA256 908cd8733a9106d32250415b0bbb0bcc05ca06ff8c2854c2589909021b644361
                      • MD5 SHA1 SHA512 SSDEEP

                      info.hta

                      • Path C:\users\public\desktop\info.hta
                      • Size 5KB
                      • SHA256 908cd8733a9106d32250415b0bbb0bcc05ca06ff8c2854c2589909021b644361
                      • MD5 SHA1 SHA512 SSDEEP

                      info.hta

                      • Path F:\info.hta
                      • Size 5KB
                      • SHA256 908cd8733a9106d32250415b0bbb0bcc05ca06ff8c2854c2589909021b644361
                      • MD5 SHA1 SHA512 SSDEEP

                      memory/3136-2279-0x0000000000400000-0x0000000002B49000-memory.dmp

                      memory/3136-6577-0x0000000000400000-0x0000000002B49000-memory.dmp

                      memory/3136-964-0x0000000000400000-0x0000000002B49000-memory.dmp

                      memory/3136-1040-0x0000000000400000-0x0000000002B49000-memory.dmp

                      memory/3136-135-0x0000000002BD0000-0x0000000002BDF000-memory.dmp

                      memory/3136-4479-0x0000000000400000-0x0000000002B49000-memory.dmp

                      memory/3136-5494-0x0000000000400000-0x0000000002B49000-memory.dmp

                      memory/3136-829-0x0000000002C40000-0x0000000002D40000-memory.dmp

                      memory/3136-10223-0x0000000000400000-0x0000000002B49000-memory.dmp

                      memory/3136-12041-0x0000000000400000-0x0000000002B49000-memory.dmp

                      memory/3136-134-0x0000000002C40000-0x0000000002D40000-memory.dmp

                      memory/3136-136-0x0000000000400000-0x0000000002B49000-memory.dmp

                      memory/4296-138-0x0000000002DE0000-0x0000000002EE0000-memory.dmp

                      memory/4296-139-0x0000000002BD0000-0x0000000002BDF000-memory.dmp

                      memory/4296-140-0x0000000000400000-0x0000000002B49000-memory.dmp