c535cd3d3513af88830ba7c1733e59f48731a0aeb66e9affa425594698649a5c

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	94bec218a195458cdda123860f623557_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	wcsydrv.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	94bec218a195458cdda123860f623557_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
60	wcsydrv.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Services Data = "C:\\Users\\Admin\\AppData\\Local\\Temp\\94bec218a195458cdda123860f623557_JaffaCakes118.exe"	94bec218a195458cdda123860f623557_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Windows Services Data = "C:\\Users\\Admin\\AppData\\Local\\Temp\\94bec218a195458cdda123860f623557_JaffaCakes118.exe"	94bec218a195458cdda123860f623557_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Services Data = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wcsydrv.exe"	wcsydrv.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\Windows Services Data = "C:\\Users\\Admin\\AppData\\Local\\Temp\\wcsydrv.exe"	wcsydrv.exe

Modifies WinLogon 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Windows start = "explorer.exe"	94bec218a195458cdda123860f623557_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Windows start = "explorer.exe"	wcsydrv.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 2 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	94bec218a195458cdda123860f623557_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wcsydrv.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4416 wrote to memory of 60	4416	94bec218a195458cdda123860f623557_JaffaCakes118.exe	87
PID 4416 wrote to memory of 60	4416	94bec218a195458cdda123860f623557_JaffaCakes118.exe	87
PID 4416 wrote to memory of 60	4416	94bec218a195458cdda123860f623557_JaffaCakes118.exe	87

C:\Users\Admin\AppData\Local\Temp\94bec218a195458cdda123860f623557_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\94bec218a195458cdda123860f623557_JaffaCakes118.exe"
1⤵
- Adds policy Run key to start application
- Checks computer location settings
- Adds Run key to start application
- Modifies WinLogon
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4416
- C:\Users\Admin\AppData\Local\Temp\wcsydrv.exe
  "C:\Users\Admin\AppData\Local\Temp\wcsydrv.exe" a
  2⤵
  - Adds policy Run key to start application
  - Executes dropped EXE
  - Adds Run key to start application
  - Modifies WinLogon
  - System Location Discovery: System Language Discovery
  PID:60

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

Query Registry

T1012

System Information Discovery

2

T1082

System Location Discovery

T1614

System Language Discovery