Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    27/07/2026, 00:15

General

  • Target
    Vat.No.20260727074826.exe
  • Size 3.5MB
  • Sample260727-akdepatake
  • SHA256 3a0583f7d3f41e1c2c36fa585ad620a518ab6661767f2e9683023745b6f58c4c
  • 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 4 IoCs

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

  • Enumerates processes with tasklist 1 TTPs 5 IoCs
  • 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.

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 23 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 5 IoCs
  • Kills process with taskkill 1 IoCs
  • Modifies registry class 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Vat.No.20260727074826.exe
    "C:\Users\Admin\AppData\Local\Temp\Vat.No.20260727074826.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2120
    • 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:4056
      • C:\Windows\SysWOW64\ComputerDefaults.exe
        C:\Windows\System32\ComputerDefaults.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4216
        • C:\ProgramData\{1533D4AE-1AFC-463F-9691-8AEE7AF66B24}v14.82.46647.3168\packages\CopilotUpdate.exe
          "CopilotUpdate.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:4616
          • 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:4788
          • C:\Windows\SysWOW64\cmd.exe
            cmd.exe /c start "" /B cmd /C C:\Users\Admin\AppData\Local\Temp\D98CCD6E32F3C737332.BAT
            5⤵
            • Executes a command shell one-liner
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:3724
            • C:\Windows\SysWOW64\cmd.exe
              cmd /C C:\Users\Admin\AppData\Local\Temp\D98CCD6E32F3C737332.BAT
              6⤵
              • Executes a command shell one-liner
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:2196
              • C:\Windows\SysWOW64\tasklist.exe
                tasklist /FI "IMAGENAME eq CopilotUpdate.exe"
                7⤵
                • Enumerates processes with tasklist
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:3488
              • C:\Windows\SysWOW64\find.exe
                find /I "CopilotUpdate.exe"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:2116
              • C:\Windows\SysWOW64\timeout.exe
                timeout /t 30 /nobreak
                7⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:1076
              • C:\Windows\SysWOW64\tasklist.exe
                tasklist /FI "IMAGENAME eq CopilotUpdate.exe"
                7⤵
                • Enumerates processes with tasklist
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:904
              • C:\Windows\SysWOW64\find.exe
                find /I "CopilotUpdate.exe"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:400
              • C:\Windows\SysWOW64\timeout.exe
                timeout /t 30 /nobreak
                7⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:4340
              • C:\Windows\SysWOW64\tasklist.exe
                tasklist /FI "IMAGENAME eq CopilotUpdate.exe"
                7⤵
                • Enumerates processes with tasklist
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:3376
              • C:\Windows\SysWOW64\find.exe
                find /I "CopilotUpdate.exe"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:3988
              • C:\Windows\SysWOW64\timeout.exe
                timeout /t 30 /nobreak
                7⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:2036
              • C:\Windows\SysWOW64\tasklist.exe
                tasklist /FI "IMAGENAME eq CopilotUpdate.exe"
                7⤵
                • Enumerates processes with tasklist
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:4364
              • C:\Windows\SysWOW64\find.exe
                find /I "CopilotUpdate.exe"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:4268
              • C:\Windows\SysWOW64\timeout.exe
                timeout /t 30 /nobreak
                7⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:3396
              • C:\Windows\SysWOW64\tasklist.exe
                tasklist /FI "IMAGENAME eq CopilotUpdate.exe"
                7⤵
                • Enumerates processes with tasklist
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:4980
              • C:\Windows\SysWOW64\find.exe
                find /I "CopilotUpdate.exe"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:4376
              • C:\Windows\SysWOW64\timeout.exe
                timeout /t 30 /nobreak
                7⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:1384
  • C:\ProgramData\{1533D4AE-1AFC-463F-9691-8AEE7AF66B24}v14.82.46647.3168\packages\CopilotUpdate.exe
    C:\ProgramData\{1533D4AE-1AFC-463F-9691-8AEE7AF66B24}v14.82.46647.3168\packages\CopilotUpdate.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    PID:4836
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4836 -s 732
      2⤵
      • Program crash
      PID:3660
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4836 -ip 4836
    1⤵
      PID:1560

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          CopilotUpdate.exe

          • Path C:\ProgramData\{1533D4AE-1AFC-463F-9691-8AEE7AF66B24}v14.82.46647.3168\packages\CopilotUpdate.exe
          • Size 3.5MB
          • SHA256 3a0583f7d3f41e1c2c36fa585ad620a518ab6661767f2e9683023745b6f58c4c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          PDFCore8.dll

          • Path C:\ProgramData\{1533D4AE-1AFC-463F-9691-8AEE7AF66B24}v14.82.46647.3168\packages\PDFCore8.dll
          • Size 5.5MB
          • SHA256 0ab5b5c9ac10f99e1637ce6d1a0e49738c6588461e1b044553d970d311faa652
          • MD5 SHA1 SHA512 SSDEEP TLSH

          D98CCD6E32F3C737332.BAT

          • Path C:\Users\Admin\AppData\Local\Temp\D98CCD6E32F3C737332.BAT
          • Size 862B
          • SHA256 5814556d5afb468d067edd018533156a9065eb038693f0b532a3803749dcbf5b
          • MD5 SHA1 SHA512 TLSH

          memory/4616-14-0x0000000003DE0000-0x0000000003E38000-memory.dmp

          memory/4616-15-0x0000000003DE0000-0x0000000003E38000-memory.dmp

          memory/4616-17-0x0000000003DE0000-0x0000000003E38000-memory.dmp

          memory/4616-21-0x0000000003DE0000-0x0000000003E38000-memory.dmp

          memory/4616-20-0x0000000003DE0000-0x0000000003E38000-memory.dmp