njrat | 400c24bdb9b7dabfcd9a8a2f137550f338014d833d169c6e6f4252910fb95feb

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
22/03/2025, 06:15

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General

Target

a3bf76de6495ca8e41bd7204f50b00be.exe
Size

23KB
MD5

a3bf76de6495ca8e41bd7204f50b00be
SHA1

343f912c9bda0aa4bf471a851af48ffd90af1782
SHA256

51ca941c0fd4f1b9de7bbeabce565bc966fb9c37cafc74ab2b5a9c301f4c30df
SHA512

0c30731d26ae612725a78dc63f21a5fbde96901f4f1ef7102f9da61c9b6c90a9c5c417854991562b2baa601d8c52e74ece95d6e7b571af73d97e86e5f62a29a4
SSDEEP

384:Dwz6+T4IjWZFNwXU0eiNUBdvt6lgT+lLOhXxQmRvR6JZlbw8hqIusZzZgU:oTbC81NgRpcnu+

Score

10^/10

njrat defense_evasion discovery persistence privilege_escalation trojan

Malware Config

Signatures

Njrat family
njrat
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4740	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3342763580-2723508992-2885672917-1000\Control Panel\International\Geo\Nation	a3bf76de6495ca8e41bd7204f50b00be.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4631b9043838855d15e94d65a5dddc5b.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4631b9043838855d15e94d65a5dddc5b.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
4912	server.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3342763580-2723508992-2885672917-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4631b9043838855d15e94d65a5dddc5b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\4631b9043838855d15e94d65a5dddc5b = "\"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.

persistence privilege_escalation

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 3 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	a3bf76de6495ca8e41bd7204f50b00be.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe
Token: 33	4912	server.exe
Token: SeIncBasePriorityPrivilege	4912	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3264 wrote to memory of 4912	3264	a3bf76de6495ca8e41bd7204f50b00be.exe	93
PID 3264 wrote to memory of 4912	3264	a3bf76de6495ca8e41bd7204f50b00be.exe	93
PID 3264 wrote to memory of 4912	3264	a3bf76de6495ca8e41bd7204f50b00be.exe	93
PID 4912 wrote to memory of 4740	4912	server.exe	96
PID 4912 wrote to memory of 4740	4912	server.exe	96
PID 4912 wrote to memory of 4740	4912	server.exe	96

C:\Users\Admin\AppData\Local\Temp\a3bf76de6495ca8e41bd7204f50b00be.exe
"C:\Users\Admin\AppData\Local\Temp\a3bf76de6495ca8e41bd7204f50b00be.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3264
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4912
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:4740

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

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\server.exe

Filesize
23KB

MD5
a3bf76de6495ca8e41bd7204f50b00be

SHA1
343f912c9bda0aa4bf471a851af48ffd90af1782

SHA256
51ca941c0fd4f1b9de7bbeabce565bc966fb9c37cafc74ab2b5a9c301f4c30df

SHA512
0c30731d26ae612725a78dc63f21a5fbde96901f4f1ef7102f9da61c9b6c90a9c5c417854991562b2baa601d8c52e74ece95d6e7b571af73d97e86e5f62a29a4

Download Submit
memory/3264-0-0x0000000074F02000-0x0000000074F03000-memory.dmp

Filesize
4KB

Download
memory/3264-1-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download
memory/3264-2-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download
memory/3264-13-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download
memory/4912-12-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download
memory/4912-14-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download
memory/4912-16-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download
memory/4912-17-0x0000000074F00000-0x00000000754B1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads