Analysis

  • max time kernel
    148s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/07/2024, 12:45

General

  • Target
    FG678900987600.exe
  • Size 19KB
  • Sample240723-py3dastbkf
  • SHA256 9254a25e50462d655219ab982ca96674112e360036b0984b75050e8d423b96a0
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • RemoteHost

C2
  • 107.175.229.139:8823

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-2BGC0K

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Detected Nirsoft tools 8 IoCs

    Free utilities often used by attackers which can steal passwords, product keys, etc.

  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 3 IoCs

    Password recovery tool for various web browsers

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FG678900987600.exe
    "C:\Users\Admin\AppData\Local\Temp\FG678900987600.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3192
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      2⤵
        PID:3816
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4620
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /stext "C:\Users\Admin\AppData\Local\Temp\vtnbswayjkopydtojkwtfdtyuafxz"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          PID:1432
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /stext "C:\Users\Admin\AppData\Local\Temp\xnbusolzxsgujjpasvivqqnhdoxyamgug"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:3928
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe /stext "C:\Users\Admin\AppData\Local\Temp\ipgmt"
          3⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:5064

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          logs.dat

          • Path C:\ProgramData\remcos\logs.dat
          • Size 144B
          • SHA256 bd6c05f65368be1eaa738927ce026ddf46de4a1e4f852694629e82bb123de6d0
          • MD5 SHA1 SHA512

          vtnbswayjkopydtojkwtfdtyuafxz

          • Path C:\Users\Admin\AppData\Local\Temp\vtnbswayjkopydtojkwtfdtyuafxz
          • Size 4KB
          • SHA256 5b925ab999c036167ea8ddb4ea5256d33f56405a62faf0c40837d3e69588c5e2
          • MD5 SHA1 SHA512 SSDEEP

          memory/1432-31-0x0000000000400000-0x0000000000478000-memory.dmp

          memory/1432-44-0x0000000000400000-0x0000000000478000-memory.dmp

          memory/1432-20-0x0000000000400000-0x0000000000478000-memory.dmp

          memory/1432-24-0x0000000000400000-0x0000000000478000-memory.dmp

          memory/1432-27-0x0000000000400000-0x0000000000478000-memory.dmp

          memory/3192-1-0x00007FFDA3D83000-0x00007FFDA3D85000-memory.dmp

          memory/3192-2-0x0000000001710000-0x000000000171A000-memory.dmp

          memory/3192-3-0x00007FFDA3D80000-0x00007FFDA4841000-memory.dmp

          memory/3192-0-0x0000000000F20000-0x0000000000F2A000-memory.dmp

          memory/3192-13-0x00007FFDA3D80000-0x00007FFDA4841000-memory.dmp

          memory/3928-22-0x0000000000400000-0x0000000000462000-memory.dmp

          memory/3928-30-0x0000000000400000-0x0000000000462000-memory.dmp

          memory/3928-39-0x0000000000400000-0x0000000000462000-memory.dmp

          memory/3928-29-0x0000000000400000-0x0000000000462000-memory.dmp

          memory/3928-26-0x0000000000400000-0x0000000000462000-memory.dmp

          memory/4620-50-0x0000000010000000-0x0000000010019000-memory.dmp

          memory/4620-46-0x0000000010000000-0x0000000010019000-memory.dmp

          memory/4620-17-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-89-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-88-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-81-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-80-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-16-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-73-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-15-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-14-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-72-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-12-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-11-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-8-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-7-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-6-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-19-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-49-0x0000000010000000-0x0000000010019000-memory.dmp

          memory/4620-5-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-51-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-55-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-56-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-57-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-4-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-64-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/4620-65-0x0000000000400000-0x0000000000482000-memory.dmp

          memory/5064-28-0x0000000000400000-0x0000000000424000-memory.dmp

          memory/5064-33-0x0000000000400000-0x0000000000424000-memory.dmp

          memory/5064-42-0x0000000000400000-0x0000000000424000-memory.dmp

          memory/5064-40-0x0000000000430000-0x0000000000440000-memory.dmp

          memory/5064-34-0x0000000000400000-0x0000000000424000-memory.dmp

          memory/5064-38-0x0000000000400000-0x0000000000424000-memory.dmp