xred | 90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	Synaptics.exe

Deletes itself 1 IoCs

pid	Process
2164	Au_.exe

Executes dropped EXE 5 IoCs

pid	Process
2820	._cache_90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe
2164	Au_.exe
3320	Synaptics.exe
4256	._cache_Synaptics.exe
1228	Bu_.exe

Loads dropped DLL 13 IoCs

pid	Process
2164	Au_.exe
2164	Au_.exe
1228	Bu_.exe
1228	Bu_.exe
2164	Au_.exe
2164	Au_.exe
2164	Au_.exe
1228	Bu_.exe
1228	Bu_.exe
1228	Bu_.exe
2164	Au_.exe
2164	Au_.exe
1228	Bu_.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"	90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.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 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	90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Au_.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	Bu_.exe

NSIS installer 1 IoCs

installer

resource	yara_rule
behavioral2/files/0x000c000000023b36-5.dat	nsis_installer_1

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\	90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Synaptics.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3896	EXCEL.EXE

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE
3896	EXCEL.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1412 wrote to memory of 2820	1412	90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe	85
PID 1412 wrote to memory of 2820	1412	90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe	85
PID 1412 wrote to memory of 2820	1412	90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe	85
PID 2820 wrote to memory of 2164	2820	._cache_90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe	86
PID 2820 wrote to memory of 2164	2820	._cache_90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe	86
PID 2820 wrote to memory of 2164	2820	._cache_90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe	86
PID 1412 wrote to memory of 3320	1412	90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe	87
PID 1412 wrote to memory of 3320	1412	90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe	87
PID 1412 wrote to memory of 3320	1412	90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe	87
PID 3320 wrote to memory of 4256	3320	Synaptics.exe	88
PID 3320 wrote to memory of 4256	3320	Synaptics.exe	88
PID 3320 wrote to memory of 4256	3320	Synaptics.exe	88
PID 4256 wrote to memory of 1228	4256	._cache_Synaptics.exe	90
PID 4256 wrote to memory of 1228	4256	._cache_Synaptics.exe	90
PID 4256 wrote to memory of 1228	4256	._cache_Synaptics.exe	90

C:\Users\Admin\AppData\Local\Temp\90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe
"C:\Users\Admin\AppData\Local\Temp\90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.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:1412
- C:\Users\Admin\AppData\Local\Temp\._cache_90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe
  "C:\Users\Admin\AppData\Local\Temp\._cache_90622f04f300414e5d41407f959bbe04f48b428ae524d8b0d8bb7441becd8761.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2820
- - C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
    "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    PID:2164
- 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:3320
- - 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:4256
  - - C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Bu_.exe
      "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Bu_.exe" InjUpdate _?=C:\Users\Admin\AppData\Local\Temp\
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      PID:1228

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:3896

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