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General

  • Target

    425b34ebc80eb9b7737738032b144650N.exe

  • Size

    138KB

  • Sample

    240807-b2k2jaxbrq

  • MD5

    425b34ebc80eb9b7737738032b144650

  • SHA1

    4fed566bab7378b35ef57512af545da3f6949fda

  • SHA256

    fe9ee73d343abbc300c6217f231f14bdd9d772590c4738ff633d863bb5d55fc3

  • SHA512

    fbfec8bb290087a2b0ffeedcc19b451fc74f8a7501a5084e761ab1d7d362187fa59e7605024305bbbda511534fa4b7ad0f908c407cacfbaacf343187a12363ab

  • SSDEEP

    3072:xPd4n/M+WLcilrpgGH/GwY87mVmIXhIHh:xP6/M+WLckOBhVmIM

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

      425b34ebc80eb9b7737738032b144650N.exe

    • Size

      138KB

    • MD5

      425b34ebc80eb9b7737738032b144650

    • SHA1

      4fed566bab7378b35ef57512af545da3f6949fda

    • SHA256

      fe9ee73d343abbc300c6217f231f14bdd9d772590c4738ff633d863bb5d55fc3

    • SHA512

      fbfec8bb290087a2b0ffeedcc19b451fc74f8a7501a5084e761ab1d7d362187fa59e7605024305bbbda511534fa4b7ad0f908c407cacfbaacf343187a12363ab

    • SSDEEP

      3072:xPd4n/M+WLcilrpgGH/GwY87mVmIXhIHh:xP6/M+WLckOBhVmIM

    • Remcos

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

    • 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