General

  • Target

    4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e

  • Size

    1.9MB

  • Sample

    250330-y93b4symv6

  • MD5

    d7c4a8dd324ae3012864217758dba9cc

  • SHA1

    b87e3c1f54c5faed13889c9993e40942fcb5f528

  • SHA256

    4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e

  • SHA512

    177b3d85e6308779e344085dc8231e707baebeb2ba8e3a8e1c353dfc5cfe04d44de7e45522f245a7c7ec961e146b7a01f7d38343a0cc6b04c404517d0a12e1cd

  • SSDEEP

    24576:aD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6jvO:aF+QrFUBgq25eKu6jvO

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

213.183.58.19:4000

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    true

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    read.dat

  • keylog_flag

    false

  • keylog_folder

    CastC

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_sccafsoidz

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e

    • Size

      1.9MB

    • MD5

      d7c4a8dd324ae3012864217758dba9cc

    • SHA1

      b87e3c1f54c5faed13889c9993e40942fcb5f528

    • SHA256

      4f168264877cc440fc01894809f1512ac35a5785792a8c8c42cb33d4abf3124e

    • SHA512

      177b3d85e6308779e344085dc8231e707baebeb2ba8e3a8e1c353dfc5cfe04d44de7e45522f245a7c7ec961e146b7a01f7d38343a0cc6b04c404517d0a12e1cd

    • SSDEEP

      24576:aD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6jvO:aF+QrFUBgq25eKu6jvO

    • Remcos

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

    • Remcos family

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks