General

  • Target

    9d8ae49163d35db4d97847daffced4f391beccc963eb052420602dceb7edbb45

  • Size

    1.4MB

  • Sample

    250101-bs3j8a1qhk

  • MD5

    ea80486d454b54f865101542a8829201

  • SHA1

    8fae0f5f19bd77d18a123897c929efcee4b5f290

  • SHA256

    9d8ae49163d35db4d97847daffced4f391beccc963eb052420602dceb7edbb45

  • SHA512

    1cb99bc32bc52d7b814833cac5a8b11749e5174668dd18a4488db44fe968df58018f1f84c89b8262d37a8a6234c56b1e2b13f7d61892e11ee0d4f587cda99f34

  • SSDEEP

    24576:vD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJlH8:vF+QrFUBgq25eK/8

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

      9d8ae49163d35db4d97847daffced4f391beccc963eb052420602dceb7edbb45

    • Size

      1.4MB

    • MD5

      ea80486d454b54f865101542a8829201

    • SHA1

      8fae0f5f19bd77d18a123897c929efcee4b5f290

    • SHA256

      9d8ae49163d35db4d97847daffced4f391beccc963eb052420602dceb7edbb45

    • SHA512

      1cb99bc32bc52d7b814833cac5a8b11749e5174668dd18a4488db44fe968df58018f1f84c89b8262d37a8a6234c56b1e2b13f7d61892e11ee0d4f587cda99f34

    • SSDEEP

      24576:vD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJlH8:vF+QrFUBgq25eK/8

    • 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