General

  • Target
    11.03.2022 Transfer_pdf.exe
  • Size 528KB
  • Sample220311-r36ydschej
  • SHA256 f216501f3a4213b738c07cc290e3b5eceb2f35ea410b2ae1b1b188e27ebddc7d
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • remcos

Botnet
  • ExcessGRACE

C2
  • vkllaw.com:2828

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • 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

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-7J4K36

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    notepad;solitaire;

Targets

    • Target
      11.03.2022 Transfer_pdf.exe
    • Size 528KB
    • SHA256 f216501f3a4213b738c07cc290e3b5eceb2f35ea410b2ae1b1b188e27ebddc7d
    • MD5 SHA1 SHA512
    • Remcos

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

    • suricata: ET MALWARE Remocs 3.x Unencrypted Checkin

      suricata: ET MALWARE Remocs 3.x Unencrypted Checkin

    • suricata: ET MALWARE Remocs 3.x Unencrypted Server Response

      suricata: ET MALWARE Remocs 3.x Unencrypted Server Response

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

MITRE ATT&CK Enterprise v6

Tasks