njrat | b4636e0fc8735f53b3898701a033eebb987820e8c2597a56b648ea541b9a2319

General

Target

b4636e0fc8735f53b3898701a033eebb987820e8c2597a56b648ea541b9a2319.exe
Size

87KB
MD5

847ef522a8d9278ebba5238809ce53e3
SHA1

96a771cbe5274963d0669f75dd84b4b826aef1c3
SHA256

b4636e0fc8735f53b3898701a033eebb987820e8c2597a56b648ea541b9a2319
SHA512

6e3bf3a6fc53e65699a397eb9e0876b1870ab770c5b0cf80b36415f56f38dc868e03e7dfe46cc8fa02f5961675c480ca920f1de85fa4bcc2baf98b3a9452ac1a
SSDEEP

1536:seaV50eGNHNLJBcA/IPNwkReID65wQFq3eN84rW45pFc5gKd:xaV505tVBcsImiATbmj45fi

Score

10^/10

njrat discovery evasion 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
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

5080 netsh.exe

pid	process
5080	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

Processes:

b4636e0fc8735f53b3898701a033eebb987820e8c2597a56b648ea541b9a2319.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	b4636e0fc8735f53b3898701a033eebb987820e8c2597a56b648ea541b9a2319.exe

Drops startup file 2 IoCs

Processes:

Win32.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\16a75cb4e79ec2e2e8b4a75be333cd7a.exe	Win32.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\16a75cb4e79ec2e2e8b4a75be333cd7a.exe	Win32.exe

Executes dropped EXE 1 IoCs

Processes:

Win32.exe

pid process

2620 Win32.exe

pid	process
2620	Win32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Win32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\16a75cb4e79ec2e2e8b4a75be333cd7a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Win32.exe\" .."	Win32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\16a75cb4e79ec2e2e8b4a75be333cd7a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Win32.exe\" .."	Win32.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

Processes:

netsh.exe

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

Processes:

netsh.exeb4636e0fc8735f53b3898701a033eebb987820e8c2597a56b648ea541b9a2319.exeWin32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b4636e0fc8735f53b3898701a033eebb987820e8c2597a56b648ea541b9a2319.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Win32.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

Processes:

Win32.exe

description	pid	process
Token: SeDebugPrivilege	2620	Win32.exe
Token: 33	2620	Win32.exe
Token: SeIncBasePriorityPrivilege	2620	Win32.exe
Token: 33	2620	Win32.exe
Token: SeIncBasePriorityPrivilege	2620	Win32.exe
Token: 33	2620	Win32.exe
Token: SeIncBasePriorityPrivilege	2620	Win32.exe
Token: 33	2620	Win32.exe
Token: SeIncBasePriorityPrivilege	2620	Win32.exe
Token: 33	2620	Win32.exe
Token: SeIncBasePriorityPrivilege	2620	Win32.exe
Token: 33	2620	Win32.exe
Token: SeIncBasePriorityPrivilege	2620	Win32.exe
Token: 33	2620	Win32.exe
Token: SeIncBasePriorityPrivilege	2620	Win32.exe
Token: 33	2620	Win32.exe
Token: SeIncBasePriorityPrivilege	2620	Win32.exe
Token: 33	2620	Win32.exe
Token: SeIncBasePriorityPrivilege	2620	Win32.exe
Token: 33	2620	Win32.exe
Token: SeIncBasePriorityPrivilege	2620	Win32.exe
Token: 33	2620	Win32.exe
Token: SeIncBasePriorityPrivilege	2620	Win32.exe
Token: 33	2620	Win32.exe
Token: SeIncBasePriorityPrivilege	2620	Win32.exe
Token: 33	2620	Win32.exe
Token: SeIncBasePriorityPrivilege	2620	Win32.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

b4636e0fc8735f53b3898701a033eebb987820e8c2597a56b648ea541b9a2319.exeWin32.exe

description	pid	process	target process
PID 676 wrote to memory of 2620	676	b4636e0fc8735f53b3898701a033eebb987820e8c2597a56b648ea541b9a2319.exe	Win32.exe
PID 676 wrote to memory of 2620	676	b4636e0fc8735f53b3898701a033eebb987820e8c2597a56b648ea541b9a2319.exe	Win32.exe
PID 676 wrote to memory of 2620	676	b4636e0fc8735f53b3898701a033eebb987820e8c2597a56b648ea541b9a2319.exe	Win32.exe
PID 2620 wrote to memory of 5080	2620	Win32.exe	netsh.exe
PID 2620 wrote to memory of 5080	2620	Win32.exe	netsh.exe
PID 2620 wrote to memory of 5080	2620	Win32.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\b4636e0fc8735f53b3898701a033eebb987820e8c2597a56b648ea541b9a2319.exe
"C:\Users\Admin\AppData\Local\Temp\b4636e0fc8735f53b3898701a033eebb987820e8c2597a56b648ea541b9a2319.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:676
- C:\Users\Admin\AppData\Local\Temp\Win32.exe
  "C:\Users\Admin\AppData\Local\Temp\Win32.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:2620
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Win32.exe" "Win32.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:5080

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Win32.exe

Filesize
87KB

MD5
847ef522a8d9278ebba5238809ce53e3

SHA1
96a771cbe5274963d0669f75dd84b4b826aef1c3

SHA256
b4636e0fc8735f53b3898701a033eebb987820e8c2597a56b648ea541b9a2319

SHA512
6e3bf3a6fc53e65699a397eb9e0876b1870ab770c5b0cf80b36415f56f38dc868e03e7dfe46cc8fa02f5961675c480ca920f1de85fa4bcc2baf98b3a9452ac1a

Download Submit
memory/676-0-0x00000000751F2000-0x00000000751F3000-memory.dmp

Filesize
4KB

Download
memory/676-1-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download
memory/676-2-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download
memory/676-13-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download
memory/2620-12-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download
memory/2620-15-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download
memory/2620-14-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download
memory/2620-17-0x00000000751F0000-0x00000000757A1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads