njrat | ea98c9bf854db4937cdd2f7430d21d72169cb3a5f676ffc41e71659b250438d2

Analysis

max time kernel
150s
max time network
145s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241211-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
18-12-2024 21:35

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General

Target

Setup_Update/SetupUpdate.exe
Size

37KB
MD5

4389854ab6bd814b908dbe1c68e23845
SHA1

a4f2e5c7b686105c6d9100b71fbd6b028cf530d9
SHA256

a49aca0e07fbf1c5f485c12ba3b49c50a843a739c891e2c91d150764599ab6c3
SHA512

aa4403e28a0001d9c259f8ce4b3e4f2ed9649fc58fd8a2f1ec12141a819b9751b5c012f06b5caad8f6656ae06224b1b134e31932f8e3ce2c4c0fd387028384e1
SSDEEP

384:P/2m3hUidkiXR21cGMy8PuuRXBiFlK6IurAF+rMRTyN/0L+EcoinblneHQM3epz9:n2m3VLGv8PuuR066XrM+rMRa8Nuvdt

Score

10^/10

njrat hack discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HACK

35.159.113.6:1337

Mutex

d8dd25933bbb5fc191f7e51a861b997a

Attributes

reg_key
d8dd25933bbb5fc191f7e51a861b997a
splitter
|'|'|

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
4288	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-1-5-21-3506525125-3566313221-3651816328-1000\Control Panel\International\Geo\Nation	SetupUpdate.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d8dd25933bbb5fc191f7e51a861b997a.exe	Robloxxx.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\d8dd25933bbb5fc191f7e51a861b997a.exe	Robloxxx.exe

Executes dropped EXE 1 IoCs

pid	Process
4332	Robloxxx.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-1-5-21-3506525125-3566313221-3651816328-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\d8dd25933bbb5fc191f7e51a861b997a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Robloxxx.exe\" .."	Robloxxx.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\d8dd25933bbb5fc191f7e51a861b997a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Robloxxx.exe\" .."	Robloxxx.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	SetupUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Robloxxx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe
4332	Robloxxx.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4332	Robloxxx.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe
Token: 33	4332	Robloxxx.exe
Token: SeIncBasePriorityPrivilege	4332	Robloxxx.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4460 wrote to memory of 4332	4460	SetupUpdate.exe	82
PID 4460 wrote to memory of 4332	4460	SetupUpdate.exe	82
PID 4460 wrote to memory of 4332	4460	SetupUpdate.exe	82
PID 4332 wrote to memory of 4288	4332	Robloxxx.exe	83
PID 4332 wrote to memory of 4288	4332	Robloxxx.exe	83
PID 4332 wrote to memory of 4288	4332	Robloxxx.exe	83

C:\Users\Admin\AppData\Local\Temp\Setup_Update\SetupUpdate.exe
"C:\Users\Admin\AppData\Local\Temp\Setup_Update\SetupUpdate.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4460
- C:\Users\Admin\AppData\Local\Temp\Robloxxx.exe
  "C:\Users\Admin\AppData\Local\Temp\Robloxxx.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4332
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Robloxxx.exe" "Robloxxx.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:4288

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\Robloxxx.exe

Filesize
37KB

MD5
4389854ab6bd814b908dbe1c68e23845

SHA1
a4f2e5c7b686105c6d9100b71fbd6b028cf530d9

SHA256
a49aca0e07fbf1c5f485c12ba3b49c50a843a739c891e2c91d150764599ab6c3

SHA512
aa4403e28a0001d9c259f8ce4b3e4f2ed9649fc58fd8a2f1ec12141a819b9751b5c012f06b5caad8f6656ae06224b1b134e31932f8e3ce2c4c0fd387028384e1

Download Submit
memory/4332-7-0x0000000074680000-0x0000000074C31000-memory.dmp

Filesize
5.7MB

Download
memory/4332-5-0x0000000074680000-0x0000000074C31000-memory.dmp

Filesize
5.7MB

Download
memory/4332-8-0x0000000074680000-0x0000000074C31000-memory.dmp

Filesize
5.7MB

Download
memory/4332-9-0x0000000074680000-0x0000000074C31000-memory.dmp

Filesize
5.7MB

Download
memory/4332-10-0x0000000074680000-0x0000000074C31000-memory.dmp

Filesize
5.7MB

Download
memory/4332-11-0x0000000074680000-0x0000000074C31000-memory.dmp

Filesize
5.7MB

Download
memory/4460-0-0x0000000074682000-0x0000000074683000-memory.dmp

Filesize
4KB

Download
memory/4460-1-0x0000000074680000-0x0000000074C31000-memory.dmp

Filesize
5.7MB

Download
memory/4460-2-0x0000000074680000-0x0000000074C31000-memory.dmp

Filesize
5.7MB

Download
memory/4460-6-0x0000000074680000-0x0000000074C31000-memory.dmp

Filesize
5.7MB

Download