Overview

overview

7

Static

static

3

Vat_N0.202...09.exe

windows10-2004-x64

6

Vat_N0.202...09.exe

windows11-ltsc_2024-x64

6

pdfCORE8.dll

windows10-2004-x64

7

pdfCORE8.dll

windows11-ltsc_2024-x64

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    05/08/2026, 18:21

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General

  • Target
    Vat_N0.20260805114009.exe
  • Size 3.5MB
  • Sample260805-wzerysdp3w
  • SHA256 b869fbddbda07a9b4e511f533b4b7ac2a161cc88dae0519e0e55347c74db94a8
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
6/10
defense_evasiondiscoveryexecution

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.

    discovery
  • Discovers running processes 1 TTPs 3 IoCs

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

    discovery
  • 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.

    execution
  • Program crash 1 IoCs
  • 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.

    discovery
  • Delays execution with timeout.exe 3 IoCs
    defense_evasion
  • Kills process with taskkill 1 IoCs
    defense_evasion
  • 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_N0.20260805114009.exe
    "C:\Users\Admin\AppData\Local\Temp\Vat_N0.20260805114009.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5980
    • 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:784
      • C:\Windows\SysWOW64\ComputerDefaults.exe
        C:\Windows\System32\ComputerDefaults.exe
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4556
        • C:\ProgramData\S-1-5-21-1719287752-761198348-908922151-2082\SystemAppData\MicrosoftEdgeUpdateOnDemand.EXE
          "MicrosoftEdgeUpdateOnDemand.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:5780
          • 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:2568
          • C:\Windows\SysWOW64\cmd.exe
            cmd.exe /c start "" /B cmd /C C:\Users\Admin\AppData\Local\Temp\D95158D0FA888611012.CMD
            5⤵
            • Executes a command shell one-liner
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:3488
            • C:\Windows\SysWOW64\cmd.exe
              cmd /C C:\Users\Admin\AppData\Local\Temp\D95158D0FA888611012.CMD
              6⤵
              • Executes a command shell one-liner
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:4428
              • C:\Windows\SysWOW64\tasklist.exe
                TASKLIST /FI "IMAGENAME eq MicrosoftEdgeUpdateOnDemand.EXE" /FO CSV
                7⤵
                • Discovers running processes
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:1080
              • C:\Windows\SysWOW64\find.exe
                FIND /I "MicrosoftEdgeUpdateOnDemand.EXE"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:1208
              • C:\Windows\SysWOW64\timeout.exe
                TIMEOUT /t 60 /nobreak
                7⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:3104
              • C:\Windows\SysWOW64\tasklist.exe
                TASKLIST /FI "IMAGENAME eq MicrosoftEdgeUpdateOnDemand.EXE" /FO CSV
                7⤵
                • Discovers running processes
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:2792
              • C:\Windows\SysWOW64\find.exe
                FIND /I "MicrosoftEdgeUpdateOnDemand.EXE"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:3232
              • C:\Windows\SysWOW64\timeout.exe
                TIMEOUT /t 60 /nobreak
                7⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:544
              • C:\Windows\SysWOW64\tasklist.exe
                TASKLIST /FI "IMAGENAME eq MicrosoftEdgeUpdateOnDemand.EXE" /FO CSV
                7⤵
                • Discovers running processes
                • System Location Discovery: System Language Discovery
                • Suspicious use of AdjustPrivilegeToken
                PID:3696
              • C:\Windows\SysWOW64\find.exe
                FIND /I "MicrosoftEdgeUpdateOnDemand.EXE"
                7⤵
                • System Location Discovery: System Language Discovery
                PID:2816
              • C:\Windows\SysWOW64\timeout.exe
                TIMEOUT /t 60 /nobreak
                7⤵
                • System Location Discovery: System Language Discovery
                • Delays execution with timeout.exe
                PID:4328
  • C:\ProgramData\S-1-5-21-1719287752-761198348-908922151-2082\SystemAppData\MicrosoftEdgeUpdateOnDemand.EXE
    C:\ProgramData\S-1-5-21-1719287752-761198348-908922151-2082\SystemAppData\MicrosoftEdgeUpdateOnDemand.EXE
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    PID:5116
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 5116 -s 796
      2⤵
      • Program crash
      PID:5600
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 5116 -ip 5116
    1⤵
      PID:5776

    Network

          MITRE ATT&CK Enterprise v16

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          Downloads

          MicrosoftEdgeUpdateOnDemand.EXE
          • Path C:\ProgramData\S-1-5-21-1719287752-761198348-908922151-2082\SystemAppData\MicrosoftEdgeUpdateOnDemand.EXE
          • Size 3.5MB
          • SHA256 b869fbddbda07a9b4e511f533b4b7ac2a161cc88dae0519e0e55347c74db94a8
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          pdfCORE8.dLl
          • Path C:\ProgramData\S-1-5-21-1719287752-761198348-908922151-2082\SystemAppData\pdfCORE8.dLl
          • Size 3.7MB
          • SHA256 a66250f9ece44d75ce425e70e53236ed304bdafbc694aefaf6c83e45ecb8e9ed
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          D95158D0FA888611012.CMD
          • Path C:\Users\Admin\AppData\Local\Temp\D95158D0FA888611012.CMD
          • Size 1KB
          • SHA256 fe75c20c43d6f565d1893de319b428b104288914e1d1d157aef1113d3eb6c877
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          memory/5780-8-0x00000000051A0000-0x00000000051F7000-memory.dmp
          Download

          memory/5780-9-0x00000000051A0000-0x00000000051F7000-memory.dmp
          Download

          memory/5780-11-0x00000000051A0000-0x00000000051F7000-memory.dmp
          Download

          memory/5780-15-0x00000000051A0000-0x00000000051F7000-memory.dmp
          Download

          memory/5780-14-0x00000000051A0000-0x00000000051F7000-memory.dmp
          Download