Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-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.

  • 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 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5ab7ab87a1164876f8515a82ec11a51d_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\5ab7ab87a1164876f8515a82ec11a51d_JaffaCakes118.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2236
    • C:\Windows\SysWOW64\explorer.exe
      "C:\Windows\System32\explorer.exe" /c select, C:\Users\Admin\AppData\Roaming\appert8u5e5e7yhg45e.exe
      2⤵
        PID:2188
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:2216
      • C:\Users\Admin\AppData\Roaming\appert8u5e5e7yhg45e.exe
        "C:\Users\Admin\AppData\Roaming\appert8u5e5e7yhg45e.exe"
        2⤵
        • 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:1528
        • 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:2468
        • C:\Users\Admin\AppData\Roaming\appert8u5e5e7yhg45e.exe
          "C:\Users\Admin\AppData\Roaming\appert8u5e5e7yhg45e.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetWindowsHookEx
          PID:1916

    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

      1df068aad0bc9ecfccea3c9623c08328

      SHA1

      701a011c59d5ac1efd342d1b8016b77572ca44f0

      SHA256

      16672dca18dce9f63b769332d8e00d3adc4c12993852089d41d28e0c5c7d4018

      SHA512

      4f715c700e140b75726d65898a666eac9671675066b0673621756ae1f81308f453131d7104b6773b35b0d887a71bf1ce1269fc907ae94af2fe3e7da6cfcffc6d

    • memory/1916-16-0x0000000000400000-0x000000000041C000-memory.dmp

      Filesize

      112KB

    • memory/1916-18-0x0000000000400000-0x000000000041C000-memory.dmp

      Filesize

      112KB

    • memory/1916-19-0x0000000000400000-0x000000000041C000-memory.dmp

      Filesize

      112KB

    • memory/2236-0-0x00000000748D1000-0x00000000748D2000-memory.dmp

      Filesize

      4KB

    • memory/2236-1-0x00000000748D0000-0x0000000074E7B000-memory.dmp

      Filesize

      5.7MB

    • memory/2236-2-0x00000000748D0000-0x0000000074E7B000-memory.dmp

      Filesize

      5.7MB

    • memory/2236-3-0x00000000748D0000-0x0000000074E7B000-memory.dmp

      Filesize

      5.7MB

    • memory/2236-4-0x00000000748D0000-0x0000000074E7B000-memory.dmp

      Filesize

      5.7MB

    • memory/2236-10-0x00000000748D0000-0x0000000074E7B000-memory.dmp

      Filesize

      5.7MB