Analysis

  • max time kernel
    135s
  • max time network
    106s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/06/2024, 00:19

General

  • Target
    931b12be80c60acd76de1b96d4a90799_JaffaCakes118.exe
  • Size 19.2MB
  • Sample240604-amlh3sed9z
  • SHA256 06c2ba2931b74c1ad30af2f8315ccbf06ad5e25aa472f8dd3c27456b739e2f1f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Sets file execution options in registry 2 TTPs 12 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops file in System32 directory 11 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\931b12be80c60acd76de1b96d4a90799_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\931b12be80c60acd76de1b96d4a90799_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:4824
    • C:\Users\Admin\AppData\Local\Temp\install_flash_player_21_plugin.exe
      C:\Users\Admin\AppData\Local\Temp\install_flash_player_21_plugin.exe /install
      2⤵
      • Checks whether UAC is enabled
      • Sets file execution options in registry
      • Checks computer location settings
      • Drops file in System32 directory
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1216
      • C:\Users\Admin\AppData\Local\Temp\{14B7FAE5-54C1-4573-A6CB-C0CA45463C2B}\InstallFlashPlayer.exe
        "C:\Users\Admin\AppData\Local\Temp\{14B7FAE5-54C1-4573-A6CB-C0CA45463C2B}\InstallFlashPlayer.exe" -install -skipARPEntry -iv 1 -au 4294967295
        3⤵
        • Checks whether UAC is enabled
        • Sets file execution options in registry
        • Drops file in System32 directory
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        PID:4736
      • C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
        C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe -install
        3⤵
        • Executes dropped EXE
        PID:2804

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        install_flash_player_21_plugin.exe

        • Path C:\Users\Admin\AppData\Local\Temp\install_flash_player_21_plugin.exe
        • Size 19.0MB
        • SHA256 6b87a45ba965672d9cc4270668dff74e1307a3a8c207ba727c88fd92e76e6c0b
        • MD5 SHA1 SHA512 SSDEEP

        SetupPlugin.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nss6776.tmp\SetupPlugin.dll
        • Size 136KB
        • SHA256 7f90c32afe9ccce50d99f845ee3639aa36ce85f7be69ba2777ffc3a466d93900
        • MD5 SHA1 SHA512 SSDEEP

        InstallFlashPlayer.exe

        • Path C:\Users\Admin\AppData\Local\Temp\{14B7FAE5-54C1-4573-A6CB-C0CA45463C2B}\InstallFlashPlayer.exe
        • Size 9.6MB
        • SHA256 d54e8b7ae9a58ab07ab314b6d76113722478d5a8d0b5510059fa59013d3e56e7
        • MD5 SHA1 SHA512 SSDEEP

        fpb.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\{8E816F90-B935-43DF-8B3C-EF340EA42029}\fpb.tmp
        • Size 502KB
        • SHA256 70aacf8652f630ed6d326a7ca67e2bc00150636edb88a2a30c991492b4ff226a
        • MD5 SHA1 SHA512 SSDEEP

        fpb.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\{A09D36AA-CBBB-4C79-8D38-3EFF12987A6C}\fpb.tmp
        • Size 570KB
        • SHA256 a77635bf5ad7a403464c416fe493c881b1ec9e9b7b64cf1f83008c1df2187a74
        • MD5 SHA1 SHA512 SSDEEP

        fpb.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\{A0E47CBA-CC75-40AE-B1F5-A85CADA58F4A}\fpb.tmp
        • Size 1.1MB
        • SHA256 7952447b0bcff6b31ac22093d297725a4389dd4f8268b296ea11ad19a71cd939
        • MD5 SHA1 SHA512 SSDEEP

        fpb.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\{D1102326-7012-48F5-980A-4D9B2CBB29FA}\fpb.tmp
        • Size 866KB
        • SHA256 6ebaa6267a8eea53767b9ed306d0989f63a3873f8212feda54edf47a8a0edfaa
        • MD5 SHA1 SHA512 SSDEEP

        FlashPlayerUpdateService.exe

        • Path C:\Windows\SysWOW64\Macromed\Flash\FlashPlayerUpdateService.exe
        • Size 263KB
        • SHA256 71b37a9ceae5ab1b069fb010bc547e14445461885b74fa879e63f9f2daf644a5
        • MD5 SHA1 SHA512 SSDEEP