Analysis

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

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    06/08/2026, 05:09

General

  • Target
    Vat_N0.20260806080456.exe
  • Size 3.3MB
  • Sample260806-ftgrcstdpg
  • SHA256 21cf7a17569852a7a4c93ea9faf1478b0a08b9695acf56f10d597e86cac8aed9
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Enumerates connected drives 3 TTPs 22 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Looks up external IP address via web service 1 TTPs 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Discovers running processes 1 TTPs 3 IoCs

    Running process information can be used to identify security tools or plan follow-on actions.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Executes a command shell one-liner 1 TTPs 3 IoCs

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

  • System Location Discovery: System Language Discovery 1 TTPs 17 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Delays execution with timeout.exe 3 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies registry class 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 44 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Vat_N0.20260806080456.exe
    "C:\Users\Admin\AppData\Local\Temp\Vat_N0.20260806080456.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4960
    • C:\Windows\SysWOW64\cmd.exe
      /c C:\Windows\System32\ComputerDefaults.exe
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1252
      • C:\Windows\SysWOW64\ComputerDefaults.exe
        C:\Windows\System32\ComputerDefaults.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2392
        • C:\ProgramData\regid.6185-39.com.microsoft\SystemAppData\copilot_overlay_images_100_percent.exe
          "copilot_overlay_images_100_percent.exe"
          4⤵
          • Enumerates connected drives
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:476
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /f /im cmd.exe
            5⤵
            • System Location Discovery: System Language Discovery
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:3192
          • C:\Windows\SysWOW64\cmd.exe
            cmd.exe /c start "" /B cmd /C C:\Users\Admin\AppData\Local\Temp\BC2411DEE9DC.CMD
            5⤵
            • Executes a command shell one-liner
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:1440
            • C:\Windows\SysWOW64\cmd.exe
              cmd /C C:\Users\Admin\AppData\Local\Temp\BC2411DEE9DC.CMD
              6⤵
              • Executes a command shell one-liner
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:1908
              • C:\Windows\SysWOW64\tasklist.exe
                TASKLIST /FI "IMAGENAME eq copilot_overlay_images_100_percent.exe" /FO CSV
                7⤵
                • Discovers running processes
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:5516
              • C:\Windows\SysWOW64\find.exe
                FIND /I "copilot_overlay_images_100_percent.exe"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:828
              • C:\Windows\SysWOW64\timeout.exe
                TIMEOUT /t 60 /nobreak
                7⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:1836
              • C:\Windows\SysWOW64\tasklist.exe
                TASKLIST /FI "IMAGENAME eq copilot_overlay_images_100_percent.exe" /FO CSV
                7⤵
                • Discovers running processes
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:3064
              • C:\Windows\SysWOW64\find.exe
                FIND /I "copilot_overlay_images_100_percent.exe"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:3596
              • C:\Windows\SysWOW64\timeout.exe
                TIMEOUT /t 60 /nobreak
                7⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:3884
              • C:\Windows\SysWOW64\tasklist.exe
                TASKLIST /FI "IMAGENAME eq copilot_overlay_images_100_percent.exe" /FO CSV
                7⤵
                • Discovers running processes
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:4156
              • C:\Windows\SysWOW64\find.exe
                FIND /I "copilot_overlay_images_100_percent.exe"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:4496
              • C:\Windows\SysWOW64\timeout.exe
                TIMEOUT /t 60 /nobreak
                7⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:2316
  • C:\ProgramData\regid.6185-39.com.microsoft\SystemAppData\copilot_overlay_images_100_percent.exe
    C:\ProgramData\regid.6185-39.com.microsoft\SystemAppData\copilot_overlay_images_100_percent.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    PID:2016

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        copilot_overlay_images_100_percent.exe

        • Path C:\ProgramData\regid.6185-39.com.microsoft\SystemAppData\copilot_overlay_images_100_percent.exe
        • Size 3.3MB
        • SHA256 21cf7a17569852a7a4c93ea9faf1478b0a08b9695acf56f10d597e86cac8aed9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        pdfCoRe8.dLL

        • Path C:\ProgramData\regid.6185-39.com.microsoft\SystemAppData\pdfCoRe8.dLL
        • Size 5.2MB
        • SHA256 8136a9b1252e0d8c293c6c99444b371f3f7dc9fccbf351597a0aec029fe92a96
        • MD5 SHA1 SHA512 SSDEEP TLSH

        BC2411DEE9DC.CMD

        • Path C:\Users\Admin\AppData\Local\Temp\BC2411DEE9DC.CMD
        • Size 1KB
        • SHA256 46ca4836dca954cb4455c3761ab4179d0a55afeb5d278c79747e41f9cfc7a86d
        • MD5 SHA1 SHA512 TLSH

        memory/476-8-0x0000000005300000-0x0000000005358000-memory.dmp

        memory/476-9-0x0000000005300000-0x0000000005358000-memory.dmp

        memory/476-11-0x0000000005300000-0x0000000005358000-memory.dmp

        memory/476-12-0x0000000005300000-0x0000000005358000-memory.dmp

        memory/476-13-0x0000000005300000-0x0000000005358000-memory.dmp