njrat | 5ff121c57e4a2f2f75e4985660c9666a44b39ef2549b29b3a4d6a1e06e6e3f65

Analysis

max time kernel
149s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10/12/2024, 13:33

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General

Target

njRAT-v0.6.4/njRAT.exe
Size

959KB
MD5

0431311b5f024d6e66b90d59491f2563
SHA1

e9ff4da7e3f2199cbc16d37d8935cb1b0567ac2a
SHA256

fd624aa205517580e83fad7a4ce4d64863e95f62b34ac72647b1974a52822199
SHA512

d44b14e4b24e6e2d506ec32098488a16ebd5df57499ecd85e8878b8af2a3e1f9ed20d4125836417b702d0571f992aeac07af051dbf9268f48954556d17f51ee2
SSDEEP

12288:+O9vE3J7JO+xEPuc//9wivAmv6SAbnzmip2hGnadlFM4ZHOT2:+eXuczPCSGnzVjad1

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
2588	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ecc7c8c51c0850c1ec247c7fd3602f20.exe	windows.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ecc7c8c51c0850c1ec247c7fd3602f20.exe	windows.exe

Executes dropped EXE 3 IoCs

pid	Process
2748	njRAT.exe
2884	njq8.exe
2544	windows.exe

Loads dropped DLL 1 IoCs

pid	Process
2884	njq8.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\ecc7c8c51c0850c1ec247c7fd3602f20 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\windows.exe\" .."	windows.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\ecc7c8c51c0850c1ec247c7fd3602f20 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\windows.exe\" .."	windows.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 5 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	njRAT.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	njRAT.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	njq8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	windows.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious behavior: EnumeratesProcesses 48 IoCs

pid	Process
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe
2544	windows.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2544	windows.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2616 wrote to memory of 2748	2616	njRAT.exe	30
PID 2616 wrote to memory of 2748	2616	njRAT.exe	30
PID 2616 wrote to memory of 2748	2616	njRAT.exe	30
PID 2616 wrote to memory of 2748	2616	njRAT.exe	30
PID 2616 wrote to memory of 2884	2616	njRAT.exe	31
PID 2616 wrote to memory of 2884	2616	njRAT.exe	31
PID 2616 wrote to memory of 2884	2616	njRAT.exe	31
PID 2616 wrote to memory of 2884	2616	njRAT.exe	31
PID 2884 wrote to memory of 2544	2884	njq8.exe	32
PID 2884 wrote to memory of 2544	2884	njq8.exe	32
PID 2884 wrote to memory of 2544	2884	njq8.exe	32
PID 2884 wrote to memory of 2544	2884	njq8.exe	32
PID 2544 wrote to memory of 2588	2544	windows.exe	33
PID 2544 wrote to memory of 2588	2544	windows.exe	33
PID 2544 wrote to memory of 2588	2544	windows.exe	33
PID 2544 wrote to memory of 2588	2544	windows.exe	33

C:\Users\Admin\AppData\Local\Temp\njRAT-v0.6.4\njRAT.exe
"C:\Users\Admin\AppData\Local\Temp\njRAT-v0.6.4\njRAT.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2616
- C:\njRAT.exe
  "C:\njRAT.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2748
- C:\njq8.exe
  "C:\njq8.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2884
- - C:\Users\Admin\AppData\Local\Temp\windows.exe
    "C:\Users\Admin\AppData\Local\Temp\windows.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2544
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\windows.exe" "windows.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      Event Triggered Execution: Netsh Helper DLL
      System Location Discovery: System Language Discovery
      PID:2588

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

Replay Monitor

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Downloads

C:\njRAT.exe

Filesize
898KB

MD5
08f223ac15e2e92561ed310ae71415c1

SHA1
0a871a4b376bd8771188b96a9a1bb6fe1205160d

SHA256
51f2aec8b6de1e49b1ca74203afd380484932b07067a91f027548bc20b8967ec

SHA512
9acc7b4976c23fa019361b52eb22dcdfbf0bb1039aa8c8e74507f0501709616757a2d762d0478956a03bfadecdee812c9aa2360655891ab4ed1de96f35e23cd4

Download Submit
C:\njq8.exe

Filesize
28KB

MD5
edc4f10a5e164db64bf79eca207f2749

SHA1
d08eb761a5446a4409a72f3af3fb8dd60eec7c92

SHA256
ce6421107031175f39e61d3bcc5a98d1d94190e250034e27cdbebbadcba084a4

SHA512
e974a32096cc58c1a78c7aa8714b8b8b7a202859905a28d5ce61fd9a563382a7577825e8c9ee612d7ba708f3efef01a43d07df03e7c1e3e52d0cb32240d5d15d

Download Submit
memory/2616-30-0x0000000073F1E000-0x0000000073F1F000-memory.dmp

Filesize
4KB

Download
memory/2616-1-0x0000000000FA0000-0x0000000001098000-memory.dmp

Filesize
992KB

Download
memory/2616-2-0x0000000073F10000-0x00000000745FE000-memory.dmp

Filesize
6.9MB

Download
memory/2616-0-0x0000000073F1E000-0x0000000073F1F000-memory.dmp

Filesize
4KB

Download
memory/2616-31-0x0000000073F10000-0x00000000745FE000-memory.dmp

Filesize
6.9MB

Download
memory/2748-15-0x000000006E5C1000-0x000000006E5C2000-memory.dmp

Filesize
4KB

Download
memory/2748-32-0x000000006E5C0000-0x000000006EB6B000-memory.dmp

Filesize
5.7MB

Download
memory/2748-18-0x000000006E5C0000-0x000000006EB6B000-memory.dmp

Filesize
5.7MB

Download
memory/2748-20-0x000000006E5C0000-0x000000006EB6B000-memory.dmp

Filesize
5.7MB

Download
memory/2884-16-0x000000006E5C0000-0x000000006EB6B000-memory.dmp

Filesize
5.7MB

Download
memory/2884-28-0x000000006E5C0000-0x000000006EB6B000-memory.dmp

Filesize
5.7MB

Download
memory/2884-19-0x000000006E5C0000-0x000000006EB6B000-memory.dmp

Filesize
5.7MB

Download
memory/2884-17-0x000000006E5C0000-0x000000006EB6B000-memory.dmp

Filesize
5.7MB

Download