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Overview

overview

10

Static

static

1

f6ad4da75d...53.exe

windows7-x64

10

f6ad4da75d...53.exe

windows10-2004-x64

10

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General

  • Target

    f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253

  • Size

    1.9MB

  • Sample

    250323-y191laxqw9

  • MD5

    085a185c2c68665cd64a2da01c45d895

  • SHA1

    ba5e11c757829d273f7b5ee7f62b094c133645e3

  • SHA256

    f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253

  • SHA512

    dc8d8ed6086ebd91ebd30fa6fdad77a5163eda496b81e46879858fe86042f6794ceefa6f9e2cbace396b174809d1c734c54f361d19d6d028856d1bb7017a8f2c

  • SSDEEP

    24576:FD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6h:FF+QrFUBgq25eKu6h

Score
10/10
remcoshostdiscoverypersistenceratspywarestealer

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

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

Targets

    • Target

      f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253

    • Size

      1.9MB

    • MD5

      085a185c2c68665cd64a2da01c45d895

    • SHA1

      ba5e11c757829d273f7b5ee7f62b094c133645e3

    • SHA256

      f6ad4da75d8e9e6438479894e84c68cf3d0c89a4100e5c3704d63149407ea253

    • SHA512

      dc8d8ed6086ebd91ebd30fa6fdad77a5163eda496b81e46879858fe86042f6794ceefa6f9e2cbace396b174809d1c734c54f361d19d6d028856d1bb7017a8f2c

    • SSDEEP

      24576:FD39dlfGQrFUspugRNJI2DJnUw9W/j+BeKJWqwH6h:FF+QrFUBgq25eKu6h

    Score
    10/10
    remcoshostdiscoverypersistenceratspywarestealer

    • Remcos

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

      ratremcos

    • Remcos family

      remcos

    • 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.

      spywarestealer

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks