330becde38390b110e26cc3b65fcc56a8694bd337905099a416bd1d81f5fb36b

System Information Discovery

persistence privilege_escalation

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-204488895-2999877624-296153668-1000\Control Panel\International\Geo\Nation	2026-08-23_390acaaba5ded29d6bdbaaa3c48114fe_elex_wannacry.exe

Creates a file in the Startup directory 1 TTPs 1 IoCs

A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

Registry Run Keys / Startup Folder

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Update.bat	sqlserver.exe

Executes dropped EXE 4 IoCs

pid	Process
4492	sqlserver.exe
1748	2026-08-23_390acaaba5ded29d6bdbaaa3c48114fe_elex_wannacry.exe
4876	dumpkernel.exe
432	dumpkernel.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\kernelfaultEx = "C:\\Windows\\SysWOW64\\dumpkernel.exe"	reg.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\dumpkernel.exe	2026-08-23_390acaaba5ded29d6bdbaaa3c48114fe_elex_wannacry.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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

Windows Command Shell

T1059.003

pid	Process
1140	cmd.exe
4880	cmd.exe
3972	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sqlserver.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dumpkernel.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dumpkernel.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2026-08-23_390acaaba5ded29d6bdbaaa3c48114fe_elex_wannacry.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Checks processor information in registry 2 TTPs 5 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	sqlserver.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	sqlserver.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeBackupPrivilege	1780	dw20.exe
Token: SeBackupPrivilege	1780	dw20.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4040 wrote to memory of 4492	4040	2026-08-23_390acaaba5ded29d6bdbaaa3c48114fe_elex_wannacry.exe	86
PID 4040 wrote to memory of 1140	4040	2026-08-23_390acaaba5ded29d6bdbaaa3c48114fe_elex_wannacry.exe	87
PID 4040 wrote to memory of 4880	4040	2026-08-23_390acaaba5ded29d6bdbaaa3c48114fe_elex_wannacry.exe	89
PID 4880 wrote to memory of 1748	4880	cmd.exe	91
PID 1748 wrote to memory of 1780	1748	2026-08-23_390acaaba5ded29d6bdbaaa3c48114fe_elex_wannacry.exe	92
PID 4880 wrote to memory of 4876	4880	cmd.exe	94
PID 4876 wrote to memory of 3972	4876	dumpkernel.exe	95
PID 3972 wrote to memory of 4724	3972	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\2026-08-23_390acaaba5ded29d6bdbaaa3c48114fe_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-23_390acaaba5ded29d6bdbaaa3c48114fe_elex_wannacry.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4040
- C:\Windows\temp\sqlserver.exe
  "C:\Windows\temp\sqlserver.exe"
  2⤵
  - Creates a file in the Startup directory
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  PID:4492
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Windows\temp\tttdelzzz.bat" "
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  PID:1140
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Windows\temp\tttbrozzz.bat" "
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4880
- - C:\Users\Admin\AppData\Local\Temp\2026-08-23_390acaaba5ded29d6bdbaaa3c48114fe_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-23_390acaaba5ded29d6bdbaaa3c48114fe_elex_wannacry.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:1748
  - - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
      dw20.exe -x -s 740
      4⤵
      Checks processor information in registry
      Enumerates system info in registry
      Suspicious use of AdjustPrivilegeToken
      PID:1780
- - C:\Windows\SysWOW64\dumpkernel.exe
    "C:\Windows\system32\dumpkernel.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4876
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c reg add HKEY_LOCAL_MACHINE\Software\Microsoft\windows\currentVersion\run /v kernelfaultEx /t REG_SZ /d "C:\Windows\SysWOW64\dumpkernel.exe" /f
      4⤵
      Executes a command shell one-liner
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:3972
    - - C:\Windows\SysWOW64\reg.exe
        
        reg add HKEY_LOCAL_MACHINE\Software\Microsoft\windows\currentVersion\run /v kernelfaultEx /t REG_SZ /d "C:\Windows\SysWOW64\dumpkernel.exe" /f
        5⤵
        Adds Run key to start application
        System Location Discovery: System Language Discovery
        
        PID:4724

C:\Windows\SysWOW64\dumpkernel.exe
C:\Windows\SysWOW64\dumpkernel.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:432

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

System Information Discovery