General

  • Target

    WaveSourceInstaller.exe

  • Size

    469KB

  • Sample

    241218-yd1hmsyrcz

  • MD5

    e468b718e67495ea73c85d8258059adf

  • SHA1

    dcad70f5c39ab85f900ef1288067dbf51eaeb503

  • SHA256

    fa9f629254a8bbe915bbd587c0c060de580a18992103858a1d16686de8bd717e

  • SHA512

    b4eb6cc848b5ebfc6bab7e1cc033ec468bc8cf2fed72ea912f9fc60d6eaab75664f4627646960dccab2aceefeab9c5acbd2fe1b57d992c62358929b4d840dedb

  • SSDEEP

    12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSJn9:uiLJbpI7I2WhQqZ7J9

Malware Config

Extracted

Family

remcos

Botnet

WaveSourceLeaked

C2

204.10.194.175:4444

Attributes
  • audio_folder

    MicRecords

  • 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

    true

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-46FS9Q

  • 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

Targets

    • Target

      WaveSourceInstaller.exe

    • Size

      469KB

    • MD5

      e468b718e67495ea73c85d8258059adf

    • SHA1

      dcad70f5c39ab85f900ef1288067dbf51eaeb503

    • SHA256

      fa9f629254a8bbe915bbd587c0c060de580a18992103858a1d16686de8bd717e

    • SHA512

      b4eb6cc848b5ebfc6bab7e1cc033ec468bc8cf2fed72ea912f9fc60d6eaab75664f4627646960dccab2aceefeab9c5acbd2fe1b57d992c62358929b4d840dedb

    • SSDEEP

      12288:Wmnk7iLJbpIpiRL6I2WhSKQ9ZsfZQSJn9:uiLJbpI7I2WhQqZ7J9

    • 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