xred | ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	Synaptics.exe

Executes dropped EXE 3 IoCs

pid	Process
3392	._cache_ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe
2348	Synaptics.exe
3608	._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"	ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/files/0x000400000001e432-5.dat	upx
behavioral2/memory/3392-117-0x0000000000400000-0x00000000014CA000-memory.dmp	upx
behavioral2/memory/3392-188-0x0000000000400000-0x00000000014CA000-memory.dmp	upx
behavioral2/memory/3608-192-0x0000000000400000-0x00000000014CA000-memory.dmp	upx
behavioral2/memory/3608-248-0x0000000000400000-0x00000000014CA000-memory.dmp	upx

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	ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	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 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\	ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Synaptics.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4984	EXCEL.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

pid	Process
3392	._cache_ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe
3392	._cache_ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe
3392	._cache_ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe
3392	._cache_ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe
3608	._cache_Synaptics.exe
3608	._cache_Synaptics.exe
3608	._cache_Synaptics.exe
3608	._cache_Synaptics.exe
4984	EXCEL.EXE
4984	EXCEL.EXE
4984	EXCEL.EXE
4984	EXCEL.EXE
4984	EXCEL.EXE
4984	EXCEL.EXE
4984	EXCEL.EXE
4984	EXCEL.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 928 wrote to memory of 3392	928	ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe	82
PID 928 wrote to memory of 3392	928	ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe	82
PID 928 wrote to memory of 3392	928	ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe	82
PID 928 wrote to memory of 2348	928	ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe	83
PID 928 wrote to memory of 2348	928	ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe	83
PID 928 wrote to memory of 2348	928	ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe	83
PID 2348 wrote to memory of 3608	2348	Synaptics.exe	84
PID 2348 wrote to memory of 3608	2348	Synaptics.exe	84
PID 2348 wrote to memory of 3608	2348	Synaptics.exe	84

C:\Users\Admin\AppData\Local\Temp\ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe
"C:\Users\Admin\AppData\Local\Temp\ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.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:928
- C:\Users\Admin\AppData\Local\Temp\._cache_ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe
  "C:\Users\Admin\AppData\Local\Temp\._cache_ec57c2026a1179a1dd0e8a1713ac790ed03f7d3b68575f0d2b8d564a4525c9c7N.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:3392
- 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:2348
- - 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 SetWindowsHookEx
    PID:3608

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:4984

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