e939e763ebbe85380b46800f85060bb2c78b2fbeadbe9f6716be1323e2a71b5c

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Explorer Options3 = "win"	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	wnksyt.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\Explorer Options3 = "wints"	wnksyt.exe

Executes dropped EXE 1 IoCs

pid	Process
2840	wnksyt.exe

Loads dropped DLL 2 IoCs

pid	Process
2856	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe
2856	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Virtual Java rn = "wintsv.exe"	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Virtual Java rn = "wintsv.exe"	wnksyt.exe

Modifies WinLogon 2 TTPs 6 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Sys Startup = "wintsv.exe"	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Windows start- = "explorer.exe"	wnksyt.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Windows start- = "explorer.exe wintsv.exe"	wnksyt.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Sys Startup = "wintsv.exe"	wnksyt.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Windows start- = "explorer.exe"	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Windows start- = "explorer.exe wintsv.exe"	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe

Drops file in System32 directory 15 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\wintsv.exe	wnksyt.exe
File created	C:\Windows\SysWOW64\vandeft.exe	wnksyt.exe
File opened for modification	C:\Windows\SysWOW64\wnksyt.exe	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wintsv.exe	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\vandeft.exe	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\wnksyt.exe	wnksyt.exe
File opened for modification	C:\Windows\SysWOW64\wintsv.exe	wnksyt.exe
File opened for modification	C:\Windows\SysWOW64\vandeft.exe	wnksyt.exe
File created	C:\Windows\SysWOW64\atipict.exe	wnksyt.exe
File opened for modification	C:\Windows\SysWOW64\atipict.exe	wnksyt.exe
File created	C:\Windows\SysWOW64\wnksyt.exe	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\atipict.exe	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\atipict.exe	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\vandeft.exe	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\wintsv.exe	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 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	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2856 wrote to memory of 2840	2856	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe	31
PID 2856 wrote to memory of 2840	2856	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe	31
PID 2856 wrote to memory of 2840	2856	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe	31
PID 2856 wrote to memory of 2840	2856	18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe	31

C:\Users\Admin\AppData\Local\Temp\18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\18360cfeca1cb39ec7a122b8fde27894_JaffaCakes118.exe"
1⤵
- Adds policy Run key to start application
- Loads dropped DLL
- Adds Run key to start application
- Modifies WinLogon
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Windows\SysWOW64\wnksyt.exe
  "C:\Windows\System32\wnksyt.exe" a
  2⤵
  - Adds policy Run key to start application
  - Executes dropped EXE
  - Adds Run key to start application
  - Modifies WinLogon
  - Drops file in System32 directory
  PID:2840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

2

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

2

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

3

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery