njrat | 0ec32f48ceec162a0cf03a5134df6d8f17bde7d40e37d53b0e67e048de192ceb

Analysis

max time kernel
149s
max time network
148s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-09-2024 13:23

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General

Target

server.exe
Size

23KB
MD5

96a2055a22cedc0f8fdfe0a3cea8a8dc
SHA1

f1f45a2fa5109fab3f1b4e4d29d88d24de406890
SHA256

0ec32f48ceec162a0cf03a5134df6d8f17bde7d40e37d53b0e67e048de192ceb
SHA512

7efa6db291a7b2ff80824a06648370f3d0c2e2b55ff19549ff24d3ea563d881e6158a77654076f4e81b2bf0695e80aea1ff3e252062f0893f870173ce3ec0255
SSDEEP

384:xwz6+T4IjWZFNwXU0eiNUBdvt6lgT+lLOhXxQmRvR6JZlbw8hqIusZzZdf:iTbC81NgRpcnuC

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

Signatures

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

pid	Process
1588	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\90515cf48c395173b9d759c3efbfe87d.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\90515cf48c395173b9d759c3efbfe87d.exe	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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\90515cf48c395173b9d759c3efbfe87d = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\90515cf48c395173b9d759c3efbfe87d = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe

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 2 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

Suspicious use of AdjustPrivilegeToken 37 IoCs

description	pid	Process
Token: SeDebugPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe
Token: 33	2432	server.exe
Token: SeIncBasePriorityPrivilege	2432	server.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 1588	2432	server.exe	28
PID 2432 wrote to memory of 1588	2432	server.exe	28
PID 2432 wrote to memory of 1588	2432	server.exe	28
PID 2432 wrote to memory of 1588	2432	server.exe	28

C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Windows\SysWOW64\netsh.exe
  netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:1588

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2432-0-0x0000000074FC1000-0x0000000074FC2000-memory.dmp

Filesize
4KB

Download
memory/2432-1-0x0000000074FC0000-0x000000007556B000-memory.dmp

Filesize
5.7MB

Download
memory/2432-2-0x0000000074FC0000-0x000000007556B000-memory.dmp

Filesize
5.7MB

Download
memory/2432-4-0x0000000074FC0000-0x000000007556B000-memory.dmp

Filesize
5.7MB

Download
memory/2432-5-0x0000000074FC0000-0x000000007556B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads