njrat | 4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137

System Information Discovery

persistence privilege_escalation

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	Synaptics.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	._cache_Synaptics.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4eb37852a0eff3d12ee195891381805c.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4eb37852a0eff3d12ee195891381805c.exe	server.exe

Executes dropped EXE 4 IoCs

pid	Process
2984	._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
1028	Synaptics.exe
2800	._cache_Synaptics.exe
816	server.exe

Adds Run key to start application 2 TTPs 3 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"	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4eb37852a0eff3d12ee195891381805c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\4eb37852a0eff3d12ee195891381805c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

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	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	Synaptics.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4848	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2984	._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
2800	._cache_Synaptics.exe
816	server.exe
816	server.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	2984	._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
Token: SeDebugPrivilege	2800	._cache_Synaptics.exe
Token: SeDebugPrivilege	816	server.exe
Token: 33	816	server.exe
Token: SeIncBasePriorityPrivilege	816	server.exe
Token: 33	816	server.exe
Token: SeIncBasePriorityPrivilege	816	server.exe
Token: 33	816	server.exe
Token: SeIncBasePriorityPrivilege	816	server.exe
Token: 33	816	server.exe
Token: SeIncBasePriorityPrivilege	816	server.exe
Token: 33	816	server.exe
Token: SeIncBasePriorityPrivilege	816	server.exe
Token: 33	816	server.exe
Token: SeIncBasePriorityPrivilege	816	server.exe
Token: 33	816	server.exe
Token: SeIncBasePriorityPrivilege	816	server.exe
Token: 33	816	server.exe
Token: SeIncBasePriorityPrivilege	816	server.exe
Token: 33	816	server.exe
Token: SeIncBasePriorityPrivilege	816	server.exe
Token: 33	816	server.exe
Token: SeIncBasePriorityPrivilege	816	server.exe
Token: 33	816	server.exe
Token: SeIncBasePriorityPrivilege	816	server.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
4848	EXCEL.EXE
4848	EXCEL.EXE
4848	EXCEL.EXE
4848	EXCEL.EXE
4848	EXCEL.EXE
4848	EXCEL.EXE
4848	EXCEL.EXE
4848	EXCEL.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2376 wrote to memory of 2984	2376	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	88
PID 2376 wrote to memory of 2984	2376	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	88
PID 2376 wrote to memory of 2984	2376	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	88
PID 2376 wrote to memory of 1028	2376	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	89
PID 2376 wrote to memory of 1028	2376	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	89
PID 2376 wrote to memory of 1028	2376	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	89
PID 1028 wrote to memory of 2800	1028	Synaptics.exe	90
PID 1028 wrote to memory of 2800	1028	Synaptics.exe	90
PID 1028 wrote to memory of 2800	1028	Synaptics.exe	90
PID 2800 wrote to memory of 816	2800	._cache_Synaptics.exe	105
PID 2800 wrote to memory of 816	2800	._cache_Synaptics.exe	105
PID 2800 wrote to memory of 816	2800	._cache_Synaptics.exe	105
PID 816 wrote to memory of 2940	816	server.exe	107
PID 816 wrote to memory of 2940	816	server.exe	107
PID 816 wrote to memory of 2940	816	server.exe	107

C:\Users\Admin\AppData\Local\Temp\4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
"C:\Users\Admin\AppData\Local\Temp\4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.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:2376
- C:\Users\Admin\AppData\Local\Temp\._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
  "C:\Users\Admin\AppData\Local\Temp\._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2984
- 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:1028
- - C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2800
  - - C:\Users\Admin\AppData\Local\Temp\server.exe
      "C:\Users\Admin\AppData\Local\Temp\server.exe"
      4⤵
      Drops startup file
      Executes dropped EXE
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:816
    - - C:\Windows\SysWOW64\netsh.exe
        
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
        5⤵
        Modifies Windows Firewall
        Event Triggered Execution: Netsh Helper DLL
        System Location Discovery: System Language Discovery
        
        PID:2940

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:4848

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

3

System Information Discovery

4

System Location Discovery

T1614

System Language Discovery