General

  • Target

    c1d4fab9bdad36905abf360e5839297f587866e96ba6880e445a6a7d98f02762N.exe

  • Size

    1.4MB

  • Sample

    241203-elhg9ayqey

  • MD5

    6ab5af8965a154d4d0148cbf7508d5b0

  • SHA1

    f793f287916e1c3c39b7883e5161d75b8bf55da6

  • SHA256

    c1d4fab9bdad36905abf360e5839297f587866e96ba6880e445a6a7d98f02762

  • SHA512

    0c03d46c9c9c101bc43a1581dd3f9227bbd71480d4fd0d22acad4b851a2c4dc5198b16522709753ba543b9ccdd73761a4410182238ad47f4c37903bf9a0102dc

  • SSDEEP

    24576:6D39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJU:6F+QrFUBgq25eKS

Malware Config

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

      c1d4fab9bdad36905abf360e5839297f587866e96ba6880e445a6a7d98f02762N.exe

    • Size

      1.4MB

    • MD5

      6ab5af8965a154d4d0148cbf7508d5b0

    • SHA1

      f793f287916e1c3c39b7883e5161d75b8bf55da6

    • SHA256

      c1d4fab9bdad36905abf360e5839297f587866e96ba6880e445a6a7d98f02762

    • SHA512

      0c03d46c9c9c101bc43a1581dd3f9227bbd71480d4fd0d22acad4b851a2c4dc5198b16522709753ba543b9ccdd73761a4410182238ad47f4c37903bf9a0102dc

    • SSDEEP

      24576:6D39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJU:6F+QrFUBgq25eKS

    • 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