Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/08/2026, 20:09

General

  • Target
    FortInternal.exe
  • Size 4.9MB
  • Sample260809-yw7pnscc73
  • SHA256 0e6de00dcfad02124fe46aa2d0e84e2904f2e83765f96f7a3482e38169c2457f
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
  • Executes a command shell one-liner 1 TTPs 7 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 2 IoCs
  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 34 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 21 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\FortInternal.exe
    "C:\Users\Admin\AppData\Local\Temp\FortInternal.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4944
    • C:\Users\Admin\AppData\Local\Temp\FortInternal.exe
      "C:\Users\Admin\AppData\Local\Temp\FortInternal.exe" --rpc-worker
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      PID:5884
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c cls
      2⤵
      • Executes a command shell one-liner
      PID:5356
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c cls
      2⤵
      • Executes a command shell one-liner
      PID:4204
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\FortInternal.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:4996
      • C:\Windows\system32\certutil.exe
        certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\FortInternal.exe" MD5
        3⤵
          PID:3968
        • C:\Windows\system32\find.exe
          find /i /v "md5"
          3⤵
            PID:2620
          • C:\Windows\system32\find.exe
            find /i /v "certutil"
            3⤵
              PID:4992
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c start cmd /C "color b && title Error && echo You need to run the KeyAuthApp.init(); function before any other KeyAuth functions && timeout /t 5"
            2⤵
            • Executes a command shell one-liner
            • Suspicious use of WriteProcessMemory
            PID:2544
            • C:\Windows\system32\cmd.exe
              cmd /C "color b && title Error && echo You need to run the KeyAuthApp.init(); function before any other KeyAuth functions && timeout /t 5"
              3⤵
              • Executes a command shell one-liner
              • Suspicious use of WriteProcessMemory
              PID:3952
              • C:\Windows\system32\timeout.exe
                timeout /t 5
                4⤵
                • Delays execution with timeout.exe
                PID:1280
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c start cmd /C "color b && title Error && echo CURL Error: SSL connect error && timeout /t 5"
            2⤵
            • Executes a command shell one-liner
            • Suspicious use of WriteProcessMemory
            PID:2512
            • C:\Windows\system32\cmd.exe
              cmd /C "color b && title Error && echo CURL Error: SSL connect error && timeout /t 5"
              3⤵
              • Executes a command shell one-liner
              • Suspicious use of WriteProcessMemory
              PID:4476
              • C:\Windows\system32\timeout.exe
                timeout /t 5
                4⤵
                • Delays execution with timeout.exe
                PID:6012
        • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
          "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
          1⤵
          • Modifies data under HKEY_USERS
          • Suspicious use of SetWindowsHookEx
          PID:5468
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:5768
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:2180
        • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
          "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
          1⤵
          • Checks processor information in registry
          • Enumerates system info in registry
          • Modifies data under HKEY_USERS
          • Suspicious use of SetWindowsHookEx
          PID:5764
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:5728
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:4504
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:4108
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:1232
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:4220
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:4804
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:4348
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:3844
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:3584
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:2924
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:3824
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:1188
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:5088
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:2504
        • C:\Windows\System32\ShellHost.exe
          "C:\Windows\System32\ShellHost.exe"
          1⤵
          • Suspicious use of SetWindowsHookEx
          PID:5596

        Network

              MITRE ATT&CK Enterprise v16

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