redosdru | 6fd9108779a2169de167db6fd0c463a7e7982b10b24af07a5e5223f7bf247ea2

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	ReadPCIRegisters.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	Synaptics.exe

Executes dropped EXE 7 IoCs

pid	Process
4300	._cache_ReadPCIRegisters.exe
3436	temp1.tem
1084	temp2.tem
2568	Synaptics.exe
4040	._cache_Synaptics.exe
4224	temp1.tem
1544	temp2.tem

Loads dropped DLL 2 IoCs

pid	Process
4300	._cache_ReadPCIRegisters.exe
4040	._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"	ReadPCIRegisters.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files\AppPatch\NetSyst96.dll	temp2.tem

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	ReadPCIRegisters.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_ReadPCIRegisters.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	temp2.tem
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	temp2.tem

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

Modifies registry class 2 IoCs

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4800	EXCEL.EXE

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
4300	._cache_ReadPCIRegisters.exe
4300	._cache_ReadPCIRegisters.exe
4040	._cache_Synaptics.exe
4040	._cache_Synaptics.exe
4800	EXCEL.EXE
4800	EXCEL.EXE
4800	EXCEL.EXE
4800	EXCEL.EXE
4800	EXCEL.EXE
4800	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 4300	2960	ReadPCIRegisters.exe	85
PID 2960 wrote to memory of 4300	2960	ReadPCIRegisters.exe	85
PID 2960 wrote to memory of 4300	2960	ReadPCIRegisters.exe	85
PID 4300 wrote to memory of 3436	4300	._cache_ReadPCIRegisters.exe	86
PID 4300 wrote to memory of 3436	4300	._cache_ReadPCIRegisters.exe	86
PID 4300 wrote to memory of 1084	4300	._cache_ReadPCIRegisters.exe	88
PID 4300 wrote to memory of 1084	4300	._cache_ReadPCIRegisters.exe	88
PID 4300 wrote to memory of 1084	4300	._cache_ReadPCIRegisters.exe	88
PID 2960 wrote to memory of 2568	2960	ReadPCIRegisters.exe	90
PID 2960 wrote to memory of 2568	2960	ReadPCIRegisters.exe	90
PID 2960 wrote to memory of 2568	2960	ReadPCIRegisters.exe	90
PID 2568 wrote to memory of 4040	2568	Synaptics.exe	92
PID 2568 wrote to memory of 4040	2568	Synaptics.exe	92
PID 2568 wrote to memory of 4040	2568	Synaptics.exe	92
PID 4040 wrote to memory of 4224	4040	._cache_Synaptics.exe	94
PID 4040 wrote to memory of 4224	4040	._cache_Synaptics.exe	94
PID 4040 wrote to memory of 1544	4040	._cache_Synaptics.exe	95
PID 4040 wrote to memory of 1544	4040	._cache_Synaptics.exe	95
PID 4040 wrote to memory of 1544	4040	._cache_Synaptics.exe	95

C:\Users\Admin\AppData\Local\Temp\ReadPCIRegisters.exe
"C:\Users\Admin\AppData\Local\Temp\ReadPCIRegisters.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:2960
- C:\Users\Admin\AppData\Local\Temp\._cache_ReadPCIRegisters.exe
  "C:\Users\Admin\AppData\Local\Temp\._cache_ReadPCIRegisters.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4300
- - C:\Users\Admin\AppData\Local\Temp\temp1.tem
    C:\Users\Admin\AppData\Local\Temp\temp1.tem
    3⤵
    - Executes dropped EXE
    PID:3436
- - C:\Users\Admin\AppData\Local\Temp\temp2.tem
    C:\Users\Admin\AppData\Local\Temp\temp2.tem
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    PID:1084
- 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:2568
- - C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4040
  - - C:\Users\Admin\AppData\Local\Temp\temp1.tem
      C:\Users\Admin\AppData\Local\Temp\temp1.tem
      4⤵
      Executes dropped EXE
      PID:4224
  - - C:\Users\Admin\AppData\Local\Temp\temp2.tem
      C:\Users\Admin\AppData\Local\Temp\temp2.tem
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:1544

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:4800

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

3

System Information Discovery

4

System Location Discovery

T1614

System Language Discovery