General

  • Target

    1da8b868bd5d60050d40adae98482f1310d3679948dd1cee7a1b4a8ef9a396f0.exe

  • Size

    2.0MB

  • Sample

    240714-ksnkqswepc

  • MD5

    28d8408ad6ae09d1d703b0b8ca78d670

  • SHA1

    75645b81c0b05b4527c5cafeb1f5cd5c21b3f475

  • SHA256

    1da8b868bd5d60050d40adae98482f1310d3679948dd1cee7a1b4a8ef9a396f0

  • SHA512

    09b66b33845fe8702e757a4177833fcedf9d667ff4921a031d28ad828c808a86c1e6f4e0f163e0e84c1d4a6a733c508d74681df8c492a00254d8a52bb4393209

  • SSDEEP

    24576:AD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4aqc:Ap7E+QrFUBgq2U

Malware Config

Extracted

Family

remcos

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

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

      1da8b868bd5d60050d40adae98482f1310d3679948dd1cee7a1b4a8ef9a396f0.exe

    • Size

      2.0MB

    • MD5

      28d8408ad6ae09d1d703b0b8ca78d670

    • SHA1

      75645b81c0b05b4527c5cafeb1f5cd5c21b3f475

    • SHA256

      1da8b868bd5d60050d40adae98482f1310d3679948dd1cee7a1b4a8ef9a396f0

    • SHA512

      09b66b33845fe8702e757a4177833fcedf9d667ff4921a031d28ad828c808a86c1e6f4e0f163e0e84c1d4a6a733c508d74681df8c492a00254d8a52bb4393209

    • SSDEEP

      24576:AD39v74lfGQrFUspugRNJI2DJ53J/J/L5dJPjYF4aqc:Ap7E+QrFUBgq2U

    • 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

    • 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