Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20251223-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20251223-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/12/2025, 21:50

General

  • Target
    JaffaCakes118_39c0e005cd2892a7b315081f9db6dc37.exe
  • Size 742KB
  • Sample251218-1p8phasqby
  • SHA256 9005436ea8f7c0dede260d1b249540c94a02431afe4d26956b4199705577ea62
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\ProgramData\qnzoiya.html

Ransom Note
  • Your documents, photos, databases and other important files have been encrypted with strongest encryption and unique key, generated for this computer. Private decryption key is stored on a secret Internet server and nobody can decrypt your files until you pay and obtain the private key. If you see the main locker window, follow the instructions on the locker. Overwise, it's seems that you or your antivirus deleted the locker program. Now you have the last chance to decrypt your files. Open http://fizxfsi3cad3kn7v.onion.cab or http://fizxfsi3cad3kn7v.tor2web.org in your browser. They are public gates to the secret server. If you have problems with gates, use direct connection: 1. Download Tor Browser from http://torproject.org. 2. In the Tor Browser open the http://fizxfsi3cad3kn7v.onion Note that this server is available via Tor Browser only. Retry in 1 hour if site is not reachable. Copy and paste the following public key in the input form on server. Avoid missprints. Follow the instructions on the server. The list of your encrypted files: Path File
URLs
  • http://fizxfsi3cad3kn7v.onion.cab

  • http://fizxfsi3cad3kn7v.tor2web.org

  • http://fizxfsi3cad3kn7v.onion

Signatures

  • CTB-Locker

    Ransomware family which uses Tor to hide its C2 communications.

  • Ctblocker family
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 5 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Modifies data under HKEY_USERS 23 IoCs
  • Modifies registry class 16 IoCs
  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 25 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k DcomLaunch -p
    1⤵
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:788
    • C:\Windows\system32\DllHost.exe
      C:\Windows\system32\DllHost.exe /Processid:{AB8902B4-09CA-4BB6-B78D-A8F59079A8D5}
      2⤵
        PID:1908
      • C:\Windows\system32\wbem\wmiprvse.exe
        C:\Windows\system32\wbem\wmiprvse.exe -secured -Embedding
        2⤵
          PID:4116
        • C:\Windows\system32\backgroundTaskHost.exe
          "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
          2⤵
            PID:2348
          • C:\Windows\system32\BackgroundTransferHost.exe
            "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1
            2⤵
              PID:4616
            • C:\Windows\system32\backgroundTaskHost.exe
              "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
              2⤵
                PID:4512
            • C:\Windows\Explorer.EXE
              C:\Windows\Explorer.EXE
              1⤵
              • Sets desktop wallpaper using registry
              • Suspicious use of UnmapMainImage
              PID:3240
              • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_39c0e005cd2892a7b315081f9db6dc37.exe
                "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_39c0e005cd2892a7b315081f9db6dc37.exe"
                2⤵
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                PID:344
            • C:\Users\Admin\AppData\Local\Temp\blnzgte.exe
              C:\Users\Admin\AppData\Local\Temp\blnzgte.exe
              1⤵
              • Executes dropped EXE
              • System Location Discovery: System Language Discovery
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:2536
              • C:\Users\Admin\AppData\Local\Temp\blnzgte.exe
                "C:\Users\Admin\AppData\Local\Temp\blnzgte.exe" -u
                2⤵
                • Checks computer location settings
                • Executes dropped EXE
                • Drops file in System32 directory
                • System Location Discovery: System Language Discovery
                • Modifies Internet Explorer settings
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of FindShellTrayWindow
                • Suspicious use of SendNotifyMessage
                • Suspicious use of SetWindowsHookEx
                PID:3740

            Network

                  MITRE ATT&CK Enterprise v16

                  Replay Monitor

                  Loading Replay Monitor...

                  Downloads

                  inhrefh

                  • Path C:\ProgramData\Mozilla-1de4eec8-1241-4177-a864-e594e8d1fb38\inhrefh
                  • Size 654B
                  • SHA256 f770599be5e02206df59f950941672777c27ad9cefc7400dc533f94e62dab9bf
                  • MD5 SHA1 SHA512

                  inhrefh

                  • Path C:\ProgramData\Mozilla-1de4eec8-1241-4177-a864-e594e8d1fb38\inhrefh
                  • Size 654B
                  • SHA256 4247491d27ed2c163be6b74a7d1dc156e7d849a0399912335604d76e3a3c98cd
                  • MD5 SHA1 SHA512

                  inhrefh

                  • Path C:\ProgramData\Mozilla-1de4eec8-1241-4177-a864-e594e8d1fb38\inhrefh
                  • Size 654B
                  • SHA256 4185ba765ecd574a24643616625217b30454a87c4f8e5325af0f2eb51c98e02c
                  • MD5 SHA1 SHA512

                  inhrefh

                  • Path C:\ProgramData\Mozilla-1de4eec8-1241-4177-a864-e594e8d1fb38\inhrefh
                  • Size 654B
                  • SHA256 1e5e87afe3ae8a1f0c1289c8ce68fd78028dc0d234170015f825eb3183671306
                  • MD5 SHA1 SHA512

                  qnzoiya.html

                  • Path C:\ProgramData\qnzoiya.html
                  • Size 235KB
                  • SHA256 ac79102d87e24b2100edf88d5e7f2c42a4b7522160dacfbfbad77c214233b93a
                  • MD5 SHA1 SHA512 SSDEEP

                  blnzgte.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\blnzgte.exe
                  • Size 742KB
                  • SHA256 9005436ea8f7c0dede260d1b249540c94a02431afe4d26956b4199705577ea62
                  • MD5 SHA1 SHA512 SSDEEP

                  CachedImage_1280_720_POS4.JPG.yjgvnxe

                  • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Themes\CachedFiles\CachedImage_1280_720_POS4.JPG.yjgvnxe
                  • Size 36KB
                  • SHA256 5c2466438ded0a7843381879a690382667fee88312096f2020ecf1e21368ac7c
                  • MD5 SHA1 SHA512 SSDEEP

                  desktop.ini

                  • Path F:\$RECYCLE.BIN\S-1-5-18\desktop.ini
                  • Size 129B
                  • SHA256 e1b9ce9b57957b1a0607a72a057d6b7a9b34ea60f3f8aa8f38a3af979bd23066
                  • MD5 SHA1 SHA512

                  memory/344-0-0x0000000000A60000-0x0000000000A61000-memory.dmp

                  memory/344-221-0x0000000000400000-0x00000000004BC000-memory.dmp

                  memory/344-4-0x0000000002870000-0x0000000002ABB000-memory.dmp

                  memory/344-3-0x0000000002650000-0x000000000286A000-memory.dmp

                  memory/344-2-0x0000000000400000-0x00000000004BC000-memory.dmp

                  memory/344-1-0x0000000000A80000-0x0000000000A81000-memory.dmp

                  memory/788-15-0x000000001AD70000-0x000000001ADE7000-memory.dmp

                  memory/788-14-0x000000001AD70000-0x000000001ADE7000-memory.dmp

                  memory/788-51-0x000000001AD70000-0x000000001ADE7000-memory.dmp

                  memory/788-54-0x000000001AD70000-0x000000001ADE7000-memory.dmp

                  memory/788-3361-0x000000001AD70000-0x000000001ADE7000-memory.dmp

                  memory/788-19-0x000000001AD70000-0x000000001ADE7000-memory.dmp

                  memory/788-220-0x000000001AD70000-0x000000001ADE7000-memory.dmp

                  memory/788-21-0x000000001AD70000-0x000000001ADE7000-memory.dmp

                  memory/788-16-0x000000001AD70000-0x000000001ADE7000-memory.dmp

                  memory/2536-3367-0x0000000001400000-0x000000000164B000-memory.dmp

                  memory/2536-10-0x0000000001400000-0x000000000164B000-memory.dmp

                  memory/3740-3394-0x0000000002770000-0x00000000029BB000-memory.dmp

                  memory/3740-3395-0x0000000002770000-0x00000000029BB000-memory.dmp

                  memory/3740-3425-0x0000000002770000-0x00000000029BB000-memory.dmp

                  memory/3740-3424-0x0000000002770000-0x00000000029BB000-memory.dmp

                  memory/3740-3427-0x0000000002770000-0x00000000029BB000-memory.dmp

                  memory/3740-3428-0x0000000002770000-0x00000000029BB000-memory.dmp

                  memory/3740-3431-0x0000000002770000-0x00000000029BB000-memory.dmp