njrat | a3a08b39f4003aeee721df549a4d500708972482b8eb592510c9fe8c508a01ee

Analysis

max time kernel
150s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-01-2025 19:06

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General

Target

JaffaCakes118_b8774235b5fc45a7e8d05dd76a06dca6.exe
Size

264KB
MD5

b8774235b5fc45a7e8d05dd76a06dca6
SHA1

747f3ba5a954657deb4f5f52e3f5a61413079598
SHA256

a3a08b39f4003aeee721df549a4d500708972482b8eb592510c9fe8c508a01ee
SHA512

d1b7c19816365576c90a72ee0eb5d7fcfe56fb8429d902d25602bb4d3a7e0b4ff8ecc62b6c518958293b1da110ad3639ea8ce906678078b2f1e1eee3349f0996
SSDEEP

3072:E2S3rHoYNjPGAY1zkMlXW/UteD4p6XC0Qo0IynPIDLC2OGVcTRlaSY:xS7oYNjP3crorC

Score

10^/10

njrat newhack discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

NEWHACK

libraries.myvnc.com:1666

Mutex

301b5fcf8ce2fab8868e80b6c1f912fe

Attributes

reg_key
301b5fcf8ce2fab8868e80b6c1f912fe
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
2888	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\301b5fcf8ce2fab8868e80b6c1f912fe.exe	System.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\301b5fcf8ce2fab8868e80b6c1f912fe.exe	System.exe

Executes dropped EXE 1 IoCs

pid	Process
2704	System.exe

Loads dropped DLL 1 IoCs

pid	Process
1908	JaffaCakes118_b8774235b5fc45a7e8d05dd76a06dca6.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\301b5fcf8ce2fab8868e80b6c1f912fe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System.exe\" .."	System.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\301b5fcf8ce2fab8868e80b6c1f912fe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System.exe\" .."	System.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	JaffaCakes118_b8774235b5fc45a7e8d05dd76a06dca6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	System.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1908	JaffaCakes118_b8774235b5fc45a7e8d05dd76a06dca6.exe
1908	JaffaCakes118_b8774235b5fc45a7e8d05dd76a06dca6.exe
1908	JaffaCakes118_b8774235b5fc45a7e8d05dd76a06dca6.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe
2704	System.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2704	System.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1908	JaffaCakes118_b8774235b5fc45a7e8d05dd76a06dca6.exe
Token: SeDebugPrivilege	2704	System.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1908 wrote to memory of 2704	1908	JaffaCakes118_b8774235b5fc45a7e8d05dd76a06dca6.exe	30
PID 1908 wrote to memory of 2704	1908	JaffaCakes118_b8774235b5fc45a7e8d05dd76a06dca6.exe	30
PID 1908 wrote to memory of 2704	1908	JaffaCakes118_b8774235b5fc45a7e8d05dd76a06dca6.exe	30
PID 1908 wrote to memory of 2704	1908	JaffaCakes118_b8774235b5fc45a7e8d05dd76a06dca6.exe	30
PID 2704 wrote to memory of 2888	2704	System.exe	31
PID 2704 wrote to memory of 2888	2704	System.exe	31
PID 2704 wrote to memory of 2888	2704	System.exe	31
PID 2704 wrote to memory of 2888	2704	System.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b8774235b5fc45a7e8d05dd76a06dca6.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b8774235b5fc45a7e8d05dd76a06dca6.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1908
- C:\Users\Admin\AppData\Local\Temp\System.exe
  "C:\Users\Admin\AppData\Local\Temp\System.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:2704
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\System.exe" "System.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2888

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 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

\Users\Admin\AppData\Local\Temp\System.exe

Filesize
264KB

MD5
b8774235b5fc45a7e8d05dd76a06dca6

SHA1
747f3ba5a954657deb4f5f52e3f5a61413079598

SHA256
a3a08b39f4003aeee721df549a4d500708972482b8eb592510c9fe8c508a01ee

SHA512
d1b7c19816365576c90a72ee0eb5d7fcfe56fb8429d902d25602bb4d3a7e0b4ff8ecc62b6c518958293b1da110ad3639ea8ce906678078b2f1e1eee3349f0996

Download Submit
memory/1908-0-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/1908-1-0x0000000000A30000-0x0000000000A78000-memory.dmp

Filesize
288KB

Download
memory/1908-2-0x0000000074BD0000-0x00000000752BE000-memory.dmp

Filesize
6.9MB

Download
memory/1908-3-0x0000000074BD0000-0x00000000752BE000-memory.dmp

Filesize
6.9MB

Download
memory/1908-4-0x0000000074BD0000-0x00000000752BE000-memory.dmp

Filesize
6.9MB

Download
memory/1908-5-0x0000000074BD0000-0x00000000752BE000-memory.dmp

Filesize
6.9MB

Download
memory/1908-6-0x0000000000340000-0x000000000034E000-memory.dmp

Filesize
56KB

Download
memory/1908-14-0x0000000074BD0000-0x00000000752BE000-memory.dmp

Filesize
6.9MB

Download
memory/2704-16-0x0000000001170000-0x00000000011B8000-memory.dmp

Filesize
288KB

Download
memory/2704-15-0x0000000074BD0000-0x00000000752BE000-memory.dmp

Filesize
6.9MB

Download
memory/2704-18-0x0000000074BD0000-0x00000000752BE000-memory.dmp

Filesize
6.9MB

Download