Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-05-2024 18:10

General

  • Target

    5ab7ab87a1164876f8515a82ec11a51d_JaffaCakes118.exe

  • Size

    299KB

  • MD5

    5ab7ab87a1164876f8515a82ec11a51d

  • SHA1

    4268a9c421a1c37695acc67435334269ac8622ec

  • SHA256

    bca0f84530687df0192d79ce7bc1f1359c5ffccbbba864006d525697a964bfca

  • SHA512

    686348f82ecac03181776e153c9f8b6219ce3e5e057f1e6ba42182e0fa075832f5284a36a05d5e90a96dfef7fd8b6f7b905d69ce97d68a6e8553fbb2bc55a8b8

  • SSDEEP

    6144:yYyF0obZta3EvmYd86ouD8XDoqHBnnvlvHZIjRFq0WLaL:y5F0ofoe86ow8XDo2BnnvpHY8a

Malware Config

Extracted

Family

remcos

Version

2.0.0 Pro

Botnet

REMCOS20

C2

casillas.hicam.net:2404

casillasmx.chickenkiller.com:2404

casillas45.hopto.org:2404

casillas.libfoobar.so:2404

du4alr0ute.sendsmtp.com:2404

settings.wifizone.org:2404

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    remcos.exe

  • copy_folder

    REM20

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    jwthoir

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    REM20-HT0OGO

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5ab7ab87a1164876f8515a82ec11a51d_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\5ab7ab87a1164876f8515a82ec11a51d_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2720
    • C:\Windows\SysWOW64\explorer.exe
      "C:\Windows\System32\explorer.exe" /c select, C:\Users\Admin\AppData\Roaming\appert8u5e5e7yhg45e.exe
      2⤵
        PID:2988
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:4632
      • C:\Users\Admin\AppData\Roaming\appert8u5e5e7yhg45e.exe
        "C:\Users\Admin\AppData\Roaming\appert8u5e5e7yhg45e.exe"
        2⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:336
        • C:\Users\Admin\AppData\Roaming\appert8u5e5e7yhg45e.exe
          "C:\Users\Admin\AppData\Roaming\appert8u5e5e7yhg45e.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4512
        • C:\Users\Admin\AppData\Roaming\appert8u5e5e7yhg45e.exe
          "C:\Users\Admin\AppData\Roaming\appert8u5e5e7yhg45e.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetWindowsHookEx
          PID:3008

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Roaming\appert8u5e5e7yhg45e.exe

      Filesize

      299KB

      MD5

      5ab7ab87a1164876f8515a82ec11a51d

      SHA1

      4268a9c421a1c37695acc67435334269ac8622ec

      SHA256

      bca0f84530687df0192d79ce7bc1f1359c5ffccbbba864006d525697a964bfca

      SHA512

      686348f82ecac03181776e153c9f8b6219ce3e5e057f1e6ba42182e0fa075832f5284a36a05d5e90a96dfef7fd8b6f7b905d69ce97d68a6e8553fbb2bc55a8b8

    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch

      Filesize

      478B

      MD5

      459aaa4ef6cb96ca6c2d826a2ee7517f

      SHA1

      b371e0e5d621816f87f1b027813289e45085681d

      SHA256

      5df0a1c86b2edefe26537322eea9a8807d0468fa54464c2eba1f3c10fab5919e

      SHA512

      b31ccdfb6ef8299abfbfddb8f20450f08ef1187e9f138845df2f619325f436fa30152b3e96e3bef6b47ed6fa9595bec7584e96cf8b1708038f0027bbd0179b27

    • memory/2720-12-0x0000000074E40000-0x00000000753F1000-memory.dmp

      Filesize

      5.7MB

    • memory/2720-3-0x0000000074E40000-0x00000000753F1000-memory.dmp

      Filesize

      5.7MB

    • memory/2720-4-0x0000000074E40000-0x00000000753F1000-memory.dmp

      Filesize

      5.7MB

    • memory/2720-5-0x0000000074E42000-0x0000000074E43000-memory.dmp

      Filesize

      4KB

    • memory/2720-0-0x0000000074E42000-0x0000000074E43000-memory.dmp

      Filesize

      4KB

    • memory/2720-2-0x0000000074E40000-0x00000000753F1000-memory.dmp

      Filesize

      5.7MB

    • memory/2720-1-0x0000000074E40000-0x00000000753F1000-memory.dmp

      Filesize

      5.7MB

    • memory/3008-18-0x0000000000400000-0x000000000041C000-memory.dmp

      Filesize

      112KB

    • memory/3008-23-0x0000000000400000-0x000000000041C000-memory.dmp

      Filesize

      112KB

    • memory/3008-22-0x0000000000400000-0x000000000041C000-memory.dmp

      Filesize

      112KB

    • memory/3008-20-0x0000000000400000-0x000000000041C000-memory.dmp

      Filesize

      112KB