njrat | 38bc13ef112b2f17d4d1a80243fac6a521b5d58228984aae0752d79487fa3b66

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01/03/2025, 18:58

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01/03/2025, 18:55

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Analysis

max time kernel
150s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04/12/2024, 19:31

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General

Target

svchost.exe
Size

31KB
MD5

49b8f905867aded45f1f5b3c9bd84209
SHA1

0a87788428778dba567623ccc9be6825eba4b7c7
SHA256

02883009e7e310bf670bff6336cb6c05c5ecfe0b40274a99b769e8fbfae19ad3
SHA512

1c9d2b7bb3948ad8f3cae541602575b9eacc2a212ab0a6e7c148a24a72e36986e4c46d646244837dc3ea7c71f3db90629f7ee68ef18565d67f93d1f801308361
SSDEEP

768:cLQBlGFnf6zxV+NKPkvJfbv6/QmIDUu0ti7NAj:dIqsb8QVkzj

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

pid	Process
3240	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6825da1e045502b22d4b02d4028214ab.exe	svchost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6825da1e045502b22d4b02d4028214ab.exe	svchost.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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\6825da1e045502b22d4b02d4028214ab = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe\" .."	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\6825da1e045502b22d4b02d4028214ab = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\svchost.exe\" .."	svchost.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe
2404	svchost.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe
Token: 33	2404	svchost.exe
Token: SeIncBasePriorityPrivilege	2404	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 3240	2404	svchost.exe	83
PID 2404 wrote to memory of 3240	2404	svchost.exe	83
PID 2404 wrote to memory of 3240	2404	svchost.exe	83

C:\Users\Admin\AppData\Local\Temp\svchost.exe
"C:\Users\Admin\AppData\Local\Temp\svchost.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Windows\SysWOW64\netsh.exe
  netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\svchost.exe" "svchost.exe" ENABLE
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:3240

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

Replay Monitor

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Downloads

memory/2404-0-0x00000000747F2000-0x00000000747F3000-memory.dmp

Filesize
4KB

Download
memory/2404-1-0x00000000747F0000-0x0000000074DA1000-memory.dmp

Filesize
5.7MB

Download
memory/2404-5-0x00000000747F2000-0x00000000747F3000-memory.dmp

Filesize
4KB

Download
memory/2404-6-0x00000000747F0000-0x0000000074DA1000-memory.dmp

Filesize
5.7MB

Download