General

  • Target

    d4bc82b37c773a6da7a252a666296531_JaffaCakes118

  • Size

    131KB

  • Sample

    241208-ckfwxswpey

  • MD5

    d4bc82b37c773a6da7a252a666296531

  • SHA1

    d68248bef63169855ffe579b270adcd08e69703a

  • SHA256

    c962412a689204cd4b65e64c886e8d2a59ca7b5809e695326536b114932ede93

  • SHA512

    e8ac81a1dfa8b9851a2ab85b518f40ddeb55874da8b8064e25b82cd643fab9b4442c1da98f2faa34de1d9ef0dd3eafe0f4f5817cfb2c7c7c5ef5ad5504256896

  • SSDEEP

    1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKk:xPd4n/M+WLcilrpgGH/GwY87mVmIX0

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

systemcontrol.ddns.net:45000

systemcontrol2.ddns.net:45000

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    OfficeUpgrade.exe

  • copy_folder

    OfficeUpgrade

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    Upgrader.dat

  • keylog_flag

    false

  • keylog_folder

    Upgrader

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    req_khauflaoyr

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    OfficeUpgrade

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      d4bc82b37c773a6da7a252a666296531_JaffaCakes118

    • Size

      131KB

    • MD5

      d4bc82b37c773a6da7a252a666296531

    • SHA1

      d68248bef63169855ffe579b270adcd08e69703a

    • SHA256

      c962412a689204cd4b65e64c886e8d2a59ca7b5809e695326536b114932ede93

    • SHA512

      e8ac81a1dfa8b9851a2ab85b518f40ddeb55874da8b8064e25b82cd643fab9b4442c1da98f2faa34de1d9ef0dd3eafe0f4f5817cfb2c7c7c5ef5ad5504256896

    • SSDEEP

      1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKk:xPd4n/M+WLcilrpgGH/GwY87mVmIX0

    • Remcos

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

    • Remcos family

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks