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General

  • Target

    d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.exe

  • Size

    903KB

  • Sample

    250323-hy44kaszfv

  • MD5

    2649d9e9fcbb3e96aa04e73939597ebe

  • SHA1

    7a502353814d8323752779626cdd42651c2cfc57

  • SHA256

    d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b

  • SHA512

    11ba1a27ab7e7a6ec5638b62761d4e742f2b6c4377792952ea764dc18dc6232e8f5ba8e5bb6c9ca07deeb7eb5053a67cb4a34cee1e128c651a30f6753f2bcb4d

  • SSDEEP

    12288:tp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRz9Mt:tpugRNJI1D39dlfGQrFUx9Mt

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

      d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b.exe

    • Size

      903KB

    • MD5

      2649d9e9fcbb3e96aa04e73939597ebe

    • SHA1

      7a502353814d8323752779626cdd42651c2cfc57

    • SHA256

      d1c0a9525bf259465de304408570586693062d18f7d59ec854dbc8158acb700b

    • SHA512

      11ba1a27ab7e7a6ec5638b62761d4e742f2b6c4377792952ea764dc18dc6232e8f5ba8e5bb6c9ca07deeb7eb5053a67cb4a34cee1e128c651a30f6753f2bcb4d

    • SSDEEP

      12288:tp+rgRNyA55IxJ+feDOa9rZj5XqkJD0QrOod7XxlW91RRz9Mt:tpugRNJI1D39dlfGQrFUx9Mt

    • 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

    • 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