a997f60fdcf2ccf90e6f5eedce85131f96fd2ba647fb519573d598f911caf5cb

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
2660	sqlserver.exe
1940	2026-08-21_d6e593046294af152df6d7af8074328a_elex_wannacry.exe
1764	dumpkernel.exe
5944	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	2026-08-21_d6e593046294af152df6d7af8074328a_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
3676	cmd.exe
3908	cmd.exe
4876	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	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	2026-08-21_d6e593046294af152df6d7af8074328a_elex_wannacry.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	sqlserver.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

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

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1728 wrote to memory of 2660	1728	2026-08-21_d6e593046294af152df6d7af8074328a_elex_wannacry.exe	89
PID 1728 wrote to memory of 3676	1728	2026-08-21_d6e593046294af152df6d7af8074328a_elex_wannacry.exe	90
PID 1728 wrote to memory of 3908	1728	2026-08-21_d6e593046294af152df6d7af8074328a_elex_wannacry.exe	92
PID 3908 wrote to memory of 1940	3908	cmd.exe	94
PID 3908 wrote to memory of 1764	3908	cmd.exe	95
PID 1764 wrote to memory of 4876	1764	dumpkernel.exe	96
PID 4876 wrote to memory of 4608	4876	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\2026-08-21_d6e593046294af152df6d7af8074328a_elex_wannacry.exe
"C:\Users\Admin\AppData\Local\Temp\2026-08-21_d6e593046294af152df6d7af8074328a_elex_wannacry.exe"
1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1728
- 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:2660
- 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:3676
- 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:3908
- - C:\Users\Admin\AppData\Local\Temp\2026-08-21_d6e593046294af152df6d7af8074328a_elex_wannacry.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-08-21_d6e593046294af152df6d7af8074328a_elex_wannacry.exe"
    3⤵
    - Executes dropped EXE
    PID:1940
- - 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:1764
  - - 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:4876
    - - 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:4608

C:\Windows\SysWOW64\dumpkernel.exe
C:\Windows\SysWOW64\dumpkernel.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:5944

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

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery