njrat | 7cdc3aac4fd2cea887b0f9f0c3ef615d470b8dbec055efebce863d7fbf67d797

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	87301351de40852d96930b66553900ac_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	Regasm.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows.lnk	Regasm.exe

Executes dropped EXE 2 IoCs

pid	Process
2868	stub.exe
2688	Payload.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\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows2 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Payload.exe"	Regasm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3876 set thread context of 1448	3876	87301351de40852d96930b66553900ac_JaffaCakes118.exe	92

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	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	87301351de40852d96930b66553900ac_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Regasm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Payload.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	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeBackupPrivilege	1752	dw20.exe
Token: SeBackupPrivilege	1752	dw20.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3876 wrote to memory of 2868	3876	87301351de40852d96930b66553900ac_JaffaCakes118.exe	90
PID 3876 wrote to memory of 2868	3876	87301351de40852d96930b66553900ac_JaffaCakes118.exe	90
PID 3876 wrote to memory of 1448	3876	87301351de40852d96930b66553900ac_JaffaCakes118.exe	92
PID 3876 wrote to memory of 1448	3876	87301351de40852d96930b66553900ac_JaffaCakes118.exe	92
PID 3876 wrote to memory of 1448	3876	87301351de40852d96930b66553900ac_JaffaCakes118.exe	92
PID 3876 wrote to memory of 1448	3876	87301351de40852d96930b66553900ac_JaffaCakes118.exe	92
PID 3876 wrote to memory of 1448	3876	87301351de40852d96930b66553900ac_JaffaCakes118.exe	92
PID 3876 wrote to memory of 1448	3876	87301351de40852d96930b66553900ac_JaffaCakes118.exe	92
PID 3876 wrote to memory of 1448	3876	87301351de40852d96930b66553900ac_JaffaCakes118.exe	92
PID 3876 wrote to memory of 1448	3876	87301351de40852d96930b66553900ac_JaffaCakes118.exe	92
PID 2868 wrote to memory of 1752	2868	stub.exe	93
PID 2868 wrote to memory of 1752	2868	stub.exe	93
PID 1448 wrote to memory of 2688	1448	Regasm.exe	98
PID 1448 wrote to memory of 2688	1448	Regasm.exe	98
PID 1448 wrote to memory of 2688	1448	Regasm.exe	98
PID 1448 wrote to memory of 3368	1448	Regasm.exe	99
PID 1448 wrote to memory of 3368	1448	Regasm.exe	99
PID 1448 wrote to memory of 3368	1448	Regasm.exe	99

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3368	attrib.exe

C:\Users\Admin\AppData\Local\Temp\87301351de40852d96930b66553900ac_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\87301351de40852d96930b66553900ac_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3876
- C:\Users\Admin\AppData\Local\Temp\stub.exe
  "C:\Users\Admin\AppData\Local\Temp\stub.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2868
- - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
    dw20.exe -x -s 784
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:1752
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regasm.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1448
- - C:\Users\Admin\AppData\Local\Temp\Payload.exe
    "C:\Users\Admin\AppData\Local\Temp\Payload.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2688
- - C:\Windows\SysWOW64\attrib.exe
    attrib +h +r +s "C:\Users\Admin\AppData\Local\Temp\Payload.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:3368

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

Hide Artifacts

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Query Registry

3

System Information Discovery

4

System Location Discovery

T1614

System Language Discovery