xred | f7cd91ffd91485b364ffc57340a29e12ad5a594d6b4fa1670a221aaf5df3c583

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1294999112-580688058-1763548717-1000\Control Panel\International\Geo\Nation	EMPTERROR_dropperV2.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1294999112-580688058-1763548717-1000\Control Panel\International\Geo\Nation	Synaptics.exe

Executes dropped EXE 3 IoCs

pid	Process
4568	._cache_EMPTERROR_dropperV2.exe
2708	Synaptics.exe
4964	._cache_Synaptics.exe

VMProtect packed file 5 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral2/files/0x000c000000023b8c-5.dat	vmprotect
behavioral2/memory/4568-190-0x0000000000400000-0x0000000000CA9000-memory.dmp	vmprotect
behavioral2/memory/4568-187-0x0000000000400000-0x0000000000CA9000-memory.dmp	vmprotect
behavioral2/memory/4964-212-0x0000000000400000-0x0000000000CA9000-memory.dmp	vmprotect
behavioral2/memory/4568-218-0x0000000000400000-0x0000000000CA9000-memory.dmp	vmprotect

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"	EMPTERROR_dropperV2.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
4568	._cache_EMPTERROR_dropperV2.exe
4964	._cache_Synaptics.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 4 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	._cache_Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EMPTERROR_dropperV2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_EMPTERROR_dropperV2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE

Delays execution with timeout.exe 4 IoCs

defense_evasion

pid	Process
3608	timeout.exe
4820	timeout.exe
2728	timeout.exe
2572	timeout.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\	EMPTERROR_dropperV2.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Synaptics.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2284	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4568	._cache_EMPTERROR_dropperV2.exe
4568	._cache_EMPTERROR_dropperV2.exe
4568	._cache_EMPTERROR_dropperV2.exe
4568	._cache_EMPTERROR_dropperV2.exe
4964	._cache_Synaptics.exe
4964	._cache_Synaptics.exe
4964	._cache_Synaptics.exe
4964	._cache_Synaptics.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
2284	EXCEL.EXE
2284	EXCEL.EXE
2284	EXCEL.EXE
2284	EXCEL.EXE
2284	EXCEL.EXE
2284	EXCEL.EXE
2284	EXCEL.EXE
2284	EXCEL.EXE

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2412 wrote to memory of 4568	2412	EMPTERROR_dropperV2.exe	89
PID 2412 wrote to memory of 4568	2412	EMPTERROR_dropperV2.exe	89
PID 2412 wrote to memory of 4568	2412	EMPTERROR_dropperV2.exe	89
PID 2412 wrote to memory of 2708	2412	EMPTERROR_dropperV2.exe	91
PID 2412 wrote to memory of 2708	2412	EMPTERROR_dropperV2.exe	91
PID 2412 wrote to memory of 2708	2412	EMPTERROR_dropperV2.exe	91
PID 4568 wrote to memory of 3124	4568	._cache_EMPTERROR_dropperV2.exe	92
PID 4568 wrote to memory of 3124	4568	._cache_EMPTERROR_dropperV2.exe	92
PID 3124 wrote to memory of 2572	3124	cmd.exe	93
PID 3124 wrote to memory of 2572	3124	cmd.exe	93
PID 2708 wrote to memory of 4964	2708	Synaptics.exe	94
PID 2708 wrote to memory of 4964	2708	Synaptics.exe	94
PID 2708 wrote to memory of 4964	2708	Synaptics.exe	94
PID 4964 wrote to memory of 2152	4964	._cache_Synaptics.exe	96
PID 4964 wrote to memory of 2152	4964	._cache_Synaptics.exe	96
PID 2152 wrote to memory of 3608	2152	cmd.exe	97
PID 2152 wrote to memory of 3608	2152	cmd.exe	97
PID 3124 wrote to memory of 4820	3124	cmd.exe	104
PID 3124 wrote to memory of 4820	3124	cmd.exe	104
PID 2152 wrote to memory of 2728	2152	cmd.exe	105
PID 2152 wrote to memory of 2728	2152	cmd.exe	105

C:\Users\Admin\AppData\Local\Temp\EMPTERROR_dropperV2.exe
"C:\Users\Admin\AppData\Local\Temp\EMPTERROR_dropperV2.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:2412
- C:\Users\Admin\AppData\Local\Temp\._cache_EMPTERROR_dropperV2.exe
  "C:\Users\Admin\AppData\Local\Temp\._cache_EMPTERROR_dropperV2.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4568
- - C:\Windows\system32\cmd.exe
    "C:\Windows\sysnative\cmd" /c "C:\Users\Admin\AppData\Local\Temp\C043.tmp\C044.tmp\C054.bat C:\Users\Admin\AppData\Local\Temp\._cache_EMPTERROR_dropperV2.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3124
  - - C:\Windows\system32\timeout.exe
      timeout /t 5
      4⤵
      Delays execution with timeout.exe
      PID:2572
  - - C:\Windows\system32\timeout.exe
      timeout /t 5
      4⤵
      Delays execution with timeout.exe
      PID:4820
- 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:2708
- - C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate
    3⤵
    - Executes dropped EXE
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4964
  - - C:\Windows\system32\cmd.exe
      "C:\Windows\sysnative\cmd" /c "C:\Users\Admin\AppData\Local\Temp\C6F9.tmp\C70A.tmp\C70B.bat C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe InjUpdate"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2152
    - - C:\Windows\system32\timeout.exe
        
        timeout /t 5
        5⤵
        Delays execution with timeout.exe
        
        PID:3608
    - - C:\Windows\system32\timeout.exe
        
        timeout /t 5
        5⤵
        Delays execution with timeout.exe
        
        PID:2728

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:2284

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