General

  • Target

    51c0bcbc40451c10e3b56df10853156378e8dbfb32ee63ea936737d42818822c

  • Size

    962KB

  • Sample

    250102-2xebasskhk

  • MD5

    4a9440baa61be8363a372b0bbc5933ad

  • SHA1

    9aa5380dc87829c6fa22e9029cadcab9f6221ef9

  • SHA256

    51c0bcbc40451c10e3b56df10853156378e8dbfb32ee63ea936737d42818822c

  • SHA512

    648bd4434ce14e15c3faba25945525fffec6dad028e8fe26982d70096ccd448ca6e114e10739b1e990ea65970db97897713b8054450f1cd98c9aacb596436b0c

  • SSDEEP

    24576:fdFeteG2H+FLBvmhCWWmLiUZklZGIo/KCrB:FA9w+bvmhCWWpUZkbDo5rB

Malware Config

Extracted

Family

remcos

Botnet

Graias

C2

185.234.72.215:4444

Attributes
  • audio_folder

    MicRecords

  • audio_path

    ApplicationPath

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    graias.exe

  • copy_folder

    Graias

  • delete_file

    false

  • hide_file

    true

  • hide_keylog_file

    true

  • install_flag

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    graias

  • mouse_option

    false

  • mutex

    Rmc-O844B9

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      51c0bcbc40451c10e3b56df10853156378e8dbfb32ee63ea936737d42818822c

    • Size

      962KB

    • MD5

      4a9440baa61be8363a372b0bbc5933ad

    • SHA1

      9aa5380dc87829c6fa22e9029cadcab9f6221ef9

    • SHA256

      51c0bcbc40451c10e3b56df10853156378e8dbfb32ee63ea936737d42818822c

    • SHA512

      648bd4434ce14e15c3faba25945525fffec6dad028e8fe26982d70096ccd448ca6e114e10739b1e990ea65970db97897713b8054450f1cd98c9aacb596436b0c

    • SSDEEP

      24576:fdFeteG2H+FLBvmhCWWmLiUZklZGIo/KCrB:FA9w+bvmhCWWpUZkbDo5rB

    • Remcos

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

    • Remcos family

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • 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