Analysis

  • max time kernel
    148s
  • max time network
    104s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/10/2024, 02:54

General

  • Target
    506df35c48c2e4df4aa8146f6b3e2a9d_JaffaCakes118.dll
  • Size 464KB
  • Sample241017-ddxrjayfnd
  • SHA256 3fc977bdff9694c6f549b81516e7fee10bc79e7cea5a6ff0c13eaef7c354137c
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 33 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Writes to the Master Boot Record (MBR) 1 TTPs 3 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in System32 directory 19 IoCs
  • Drops file in Windows directory 13 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 11 IoCs

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

  • Modifies registry class 47 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\506df35c48c2e4df4aa8146f6b3e2a9d_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1744
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\506df35c48c2e4df4aa8146f6b3e2a9d_JaffaCakes118.dll,#1
      2⤵
      • Adds Run key to start application
      • Writes to the Master Boot Record (MBR)
      • Drops file in System32 directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1856
      • C:\Windows\SysWOW64\regsvr32.exe
        C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32/70l8.dll"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4824
      • C:\Windows\SysWOW64\regsvr32.exe
        C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32/03ca.dll"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1548
      • C:\Windows\SysWOW64\regsvr32.exe
        C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32/da3r.dll"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1108
      • C:\Windows\SysWOW64\regsvr32.exe
        C:\Windows\system32\regsvr32.exe /u /s "C:\Windows\system32/a3do.dll"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1084
      • C:\Windows\SysWOW64\regsvr32.exe
        C:\Windows\system32\regsvr32.exe /s "C:\Windows\system32/a3do.dll"
        3⤵
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        PID:4508
      • C:\Windows\SysWOW64\330d.exe
        C:\Windows\system32/330d.exe -i
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:116
      • C:\Windows\SysWOW64\330d.exe
        C:\Windows\system32/330d.exe -s
        3⤵
        • Executes dropped EXE
        PID:1636
      • C:\Users\Admin\AppData\Local\Temp\h8nil4o8\mtv.exe
        C:\Users\Admin\AppData\Local\Temp\h8nil4o8\mtv.exe
        3⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2740
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\system32\rundll32 C:\Windows\system32/330e.dll, Always
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3000
  • C:\Windows\SysWOW64\330d.exe
    C:\Windows\SysWOW64\330d.exe
    1⤵
    • Drops file in Drivers directory
    • Executes dropped EXE
    • Loads dropped DLL
    • Writes to the Master Boot Record (MBR)
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5116
    • C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\system32\rundll32 C:\Windows\system32/330e.dll,Always
      2⤵
      • Loads dropped DLL
      • Writes to the Master Boot Record (MBR)
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      PID:3688

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        b.dll

        • Path C:\Users\Admin\AppData\Local\Temp\h8nil4o8\b.dll
        • Size 108KB
        • SHA256 8b840786899d48e6de7d3c62b3e00235496c2732ea55220a2b2eb60e5503ab96
        • MD5 SHA1 SHA512 SSDEEP

        mtv.exe

        • Path C:\Users\Admin\AppData\Local\Temp\h8nil4o8\mtv.exe
        • Size 40KB
        • SHA256 2d08064fca64a22bd2d28d2673865348f1373661021133e1234bf40f6c1c4538
        • MD5 SHA1 SHA512 SSDEEP

        p.dll

        • Path C:\Users\Admin\AppData\Local\Temp\h8nil4o8\p.dll
        • Size 376KB
        • SHA256 264ce0dd183bc88036059fda92a7de4fb703a19b1e133a3994ff65e54443d171
        • MD5 SHA1 SHA512 SSDEEP

        s.exe

        • Path C:\Users\Admin\AppData\Local\Temp\h8nil4o8\s.exe
        • Size 200KB
        • SHA256 1d1d8766bb02b09670b0e5c7719e20453d55595a0e9b3b56cdd854704bcc24f6
        • MD5 SHA1 SHA512 SSDEEP

        tmp.exe

        • Path C:\Users\Admin\AppData\Local\Temp\uhl\tmp.exe
        • Size 140KB
        • SHA256 7d5134cd82ce33d946816c1599ace66c23814537167bab975a6b815e742b67be
        • MD5 SHA1 SHA512 SSDEEP