Analysis

  • max time kernel
    150s
  • max time network
    138s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    02/10/2024, 23:40

General

  • Target
    0cefce0dbbbedc5eb1febe4d85b23c71_JaffaCakes118.exe
  • Size 994KB
  • Sample241002-3pb2mstanp
  • SHA256 aaf1c2e67e9049fcbfd9f97302d78837769e1ad20fb2c4f35c69339e95845938
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\ProgramData\esufwfj.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://onja764ig6vah2jo.onion.cab or http://onja764ig6vah2jo.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://onja764ig6vah2jo.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://onja764ig6vah2jo.onion.cab

  • http://onja764ig6vah2jo.tor2web.org

  • http://onja764ig6vah2jo.onion

Signatures

  • CTB-Locker

    Ransomware family which uses Tor to hide its C2 communications.

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 1 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 1 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Interacts with shadow copies 3 TTPs 1 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 23 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 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 44 IoCs

Processes

  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k DcomLaunch
    1⤵
    • Drops desktop.ini file(s)
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Modifies data under HKEY_USERS
    • Suspicious use of WriteProcessMemory
    PID:600
    • C:\Windows\system32\DllHost.exe
      C:\Windows\system32\DllHost.exe /Processid:{AB8902B4-09CA-4BB6-B78D-A8F59079A8D5}
      2⤵
        PID:1232
      • C:\Windows\system32\wbem\wmiprvse.exe
        C:\Windows\system32\wbem\wmiprvse.exe -Embedding
        2⤵
          PID:1624
      • C:\Windows\Explorer.EXE
        C:\Windows\Explorer.EXE
        1⤵
        • Sets desktop wallpaper using registry
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of UnmapMainImage
        PID:1184
        • C:\Users\Admin\AppData\Local\Temp\0cefce0dbbbedc5eb1febe4d85b23c71_JaffaCakes118.exe
          "C:\Users\Admin\AppData\Local\Temp\0cefce0dbbbedc5eb1febe4d85b23c71_JaffaCakes118.exe"
          2⤵
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2240
          • C:\Users\Admin\AppData\Local\Temp\0cefce0dbbbedc5eb1febe4d85b23c71_JaffaCakes118.exe
            "C:\Users\Admin\AppData\Local\Temp\0cefce0dbbbedc5eb1febe4d85b23c71_JaffaCakes118.exe"
            3⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:1320
      • C:\Windows\system32\taskeng.exe
        taskeng.exe {B1CA3C9F-AD57-4FDF-AAFE-F681F6D43714} S-1-5-18:NT AUTHORITY\System:Service:
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:2360
        • C:\Users\Admin\AppData\Local\Temp\xjlvlhd.exe
          C:\Users\Admin\AppData\Local\Temp\xjlvlhd.exe
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2896
          • C:\Users\Admin\AppData\Local\Temp\xjlvlhd.exe
            C:\Users\Admin\AppData\Local\Temp\xjlvlhd.exe
            3⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:772
            • C:\Windows\SysWOW64\vssadmin.exe
              vssadmin delete shadows all
              4⤵
              • System Location Discovery: System Language Discovery
              • Interacts with shadow copies
              PID:1696
            • C:\Users\Admin\AppData\Local\Temp\xjlvlhd.exe
              "C:\Users\Admin\AppData\Local\Temp\xjlvlhd.exe" -u
              4⤵
              • Executes dropped EXE
              • Suspicious use of SetThreadContext
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:2676
              • C:\Users\Admin\AppData\Local\Temp\xjlvlhd.exe
                "C:\Users\Admin\AppData\Local\Temp\xjlvlhd.exe" -u
                5⤵
                • 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:2756

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            mbyrakb

            • Path C:\ProgramData\Package Cache\mbyrakb
            • Size 654B
            • SHA256 5dd184b3982119b894b39a12dea1bc9dc6d5003a2a3ae04619c4e76d4e944783
            • MD5 SHA1 SHA512

            mbyrakb

            • Path C:\ProgramData\Package Cache\mbyrakb
            • Size 654B
            • SHA256 c236d608557f5b54ae1b05ebeaf50f28dbe2a63d09aa4cb63b462a3d0d514af6
            • MD5 SHA1 SHA512

            mbyrakb

            • Path C:\ProgramData\Package Cache\mbyrakb
            • Size 654B
            • SHA256 a27cc11649dc9f82375aa42ce864efc0054b17920acfa1e29855d787c5802fbd
            • MD5 SHA1 SHA512

            esufwfj.html

            • Path C:\ProgramData\esufwfj.html
            • Size 62KB
            • SHA256 37e23081273533c42e10120c88e2192dc0d2510f55d83d1dacf0eacf7dc3d527
            • MD5 SHA1 SHA512 SSDEEP

            xjlvlhd.exe

            • Path C:\Users\Admin\AppData\Local\Temp\xjlvlhd.exe
            • Size 994KB
            • SHA256 aaf1c2e67e9049fcbfd9f97302d78837769e1ad20fb2c4f35c69339e95845938
            • MD5 SHA1 SHA512 SSDEEP

            desktop.ini

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

            memory/600-43-0x0000000000400000-0x0000000000477000-memory.dmp

            memory/600-55-0x0000000000400000-0x0000000000477000-memory.dmp

            memory/600-49-0x0000000000400000-0x0000000000477000-memory.dmp

            memory/600-51-0x0000000000400000-0x0000000000477000-memory.dmp

            memory/600-47-0x0000000000400000-0x0000000000477000-memory.dmp

            memory/600-54-0x0000000000400000-0x0000000000477000-memory.dmp

            memory/600-44-0x0000000000400000-0x0000000000477000-memory.dmp

            memory/600-41-0x0000000000400000-0x0000000000477000-memory.dmp

            memory/600-40-0x0000000000400000-0x0000000000477000-memory.dmp

            memory/600-1251-0x0000000000400000-0x0000000000477000-memory.dmp

            memory/772-1257-0x0000000000960000-0x0000000000BAB000-memory.dmp

            memory/772-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            memory/772-37-0x0000000000960000-0x0000000000BAB000-memory.dmp

            memory/772-1273-0x0000000000960000-0x0000000000BAB000-memory.dmp

            memory/1320-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            memory/1320-14-0x0000000000400000-0x00000000004A5000-memory.dmp

            memory/1320-15-0x0000000000850000-0x0000000000A6A000-memory.dmp

            memory/1320-3-0x0000000000400000-0x00000000004A5000-memory.dmp

            memory/1320-16-0x0000000000CB0000-0x0000000000EFB000-memory.dmp

            memory/1320-5-0x0000000000400000-0x00000000004A5000-memory.dmp

            memory/1320-13-0x0000000000400000-0x00000000004A5000-memory.dmp

            memory/2240-2-0x0000000074EC0000-0x000000007546B000-memory.dmp

            memory/2240-1-0x0000000074EC0000-0x000000007546B000-memory.dmp

            memory/2240-0-0x0000000074EC1000-0x0000000074EC2000-memory.dmp

            memory/2240-11-0x0000000074EC0000-0x000000007546B000-memory.dmp

            memory/2240-12-0x0000000074EC0000-0x000000007546B000-memory.dmp

            memory/2756-1287-0x0000000000DB0000-0x0000000000FFB000-memory.dmp

            memory/2756-1279-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

            memory/2756-1284-0x0000000000DB0000-0x0000000000FFB000-memory.dmp

            memory/2756-1285-0x0000000000DB0000-0x0000000000FFB000-memory.dmp

            memory/2756-1288-0x0000000000DB0000-0x0000000000FFB000-memory.dmp

            memory/2756-1290-0x0000000000DB0000-0x0000000000FFB000-memory.dmp

            memory/2756-1294-0x0000000000DB0000-0x0000000000FFB000-memory.dmp

            memory/2896-22-0x0000000074DD0000-0x000000007537B000-memory.dmp

            memory/2896-21-0x0000000074DD0000-0x000000007537B000-memory.dmp

            memory/2896-20-0x0000000074DD1000-0x0000000074DD2000-memory.dmp

            memory/2896-24-0x0000000074DD0000-0x000000007537B000-memory.dmp

            memory/2896-33-0x0000000074DD0000-0x000000007537B000-memory.dmp