xred | 70c87af178a804f97a312d3d8d509d5c6f4a54ac07d08bacf858e6687de7e435

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	Synaptics.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	file.exe

Executes dropped EXE 5 IoCs

pid	Process
4660	._cache_file.exe
3852	._cache_file.exe
3936	Synaptics.exe
3036	._cache_Synaptics.exe
4368	._cache_Synaptics.exe

Loads dropped DLL 2 IoCs

pid	Process
3852	._cache_file.exe
4368	._cache_Synaptics.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Synaptics Pointing Device Driver = "C:\\ProgramData\\Synaptics\\Synaptics.exe"	file.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
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 6 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	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_Synaptics.exe

Checks processor information in registry 2 TTPs 3 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	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	file.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Synaptics.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
884	EXCEL.EXE

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
884	EXCEL.EXE
884	EXCEL.EXE
884	EXCEL.EXE
884	EXCEL.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 4660	1996	file.exe	83
PID 1996 wrote to memory of 4660	1996	file.exe	83
PID 1996 wrote to memory of 4660	1996	file.exe	83
PID 4660 wrote to memory of 3852	4660	._cache_file.exe	84
PID 4660 wrote to memory of 3852	4660	._cache_file.exe	84
PID 4660 wrote to memory of 3852	4660	._cache_file.exe	84
PID 1996 wrote to memory of 3936	1996	file.exe	85
PID 1996 wrote to memory of 3936	1996	file.exe	85
PID 1996 wrote to memory of 3936	1996	file.exe	85
PID 3936 wrote to memory of 3036	3936	Synaptics.exe	86
PID 3936 wrote to memory of 3036	3936	Synaptics.exe	86
PID 3936 wrote to memory of 3036	3936	Synaptics.exe	86
PID 3036 wrote to memory of 4368	3036	._cache_Synaptics.exe	88
PID 3036 wrote to memory of 4368	3036	._cache_Synaptics.exe	88
PID 3036 wrote to memory of 4368	3036	._cache_Synaptics.exe	88

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Users\Admin\AppData\Local\Temp\._cache_file.exe
  "C:\Users\Admin\AppData\Local\Temp\._cache_file.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4660
- - C:\Windows\Temp\{BAA65104-1663-453A-8847-7753AEE5C699}\.cr\._cache_file.exe
    "C:\Windows\Temp\{BAA65104-1663-453A-8847-7753AEE5C699}\.cr\._cache_file.exe" -burn.clean.room="C:\Users\Admin\AppData\Local\Temp\._cache_file.exe" -burn.filehandle.attached=540 -burn.filehandle.self=548
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:3852
- C:\ProgramData\Synaptics\Synaptics.exe
  "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3936
- - C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3036
  - - C:\Windows\Temp\{2E84A4A1-A337-4A15-868B-C4CD02467330}\.cr\._cache_Synaptics.exe
      "C:\Windows\Temp\{2E84A4A1-A337-4A15-868B-C4CD02467330}\.cr\._cache_Synaptics.exe" -burn.clean.room="C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" -burn.filehandle.attached=656 -burn.filehandle.self=684 InjUpdate
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:4368

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

4

System Information Discovery

4

System Location Discovery

T1614

System Language Discovery