njrat | fa3f7a4c1502f499a481b56f5e7c185876626e3d00110d84e09652f98b776aff

Analysis

max time kernel
150s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27-11-2024 09:49

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc.exe
Size

169KB
MD5

4f3006a594b5508cd7d86a8e3823aac3
SHA1

516cb26210726d34709d9a6749909ad025ff6727
SHA256

23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc
SHA512

24530cdb5fb808e5ff4e2e11a32a5f9ed1706ca66884fd077da60f6b5603cc6d5d1a5c574a3a12bcb2c6e1845c3744e86740dbb6bada90d979ff2d80c530cbd5
SSDEEP

3072:OO8I0hNYpeUoZnXJduG1SNHGM/H4B99VH5AxuGpMS83Q9LZV:0NY4UoZnXJduG1S40kDZAxuO8K

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

Processes:

netsh.exe

pid	Process
4740	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

Processes:

23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc.exe

Drops startup file 2 IoCs

Processes:

explorer.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a412988a99c974058615f1975119a5d1.exe	explorer.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a412988a99c974058615f1975119a5d1.exe	explorer.exe

Executes dropped EXE 1 IoCs

Processes:

explorer.exe

pid	Process
2564	explorer.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a412988a99c974058615f1975119a5d1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\explorer.exe\" .."	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\a412988a99c974058615f1975119a5d1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\explorer.exe\" .."	explorer.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

Processes:

netsh.exe

description	ioc	Process
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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

Processes:

23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc.exeexplorer.exenetsh.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

Processes:

explorer.exe

description	pid	Process
Token: SeDebugPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe
Token: 33	2564	explorer.exe
Token: SeIncBasePriorityPrivilege	2564	explorer.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc.exeexplorer.exe

description	pid	Process	procid_target
PID 4592 wrote to memory of 2564	4592	23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc.exe	89
PID 4592 wrote to memory of 2564	4592	23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc.exe	89
PID 4592 wrote to memory of 2564	4592	23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc.exe	89
PID 2564 wrote to memory of 4740	2564	explorer.exe	92
PID 2564 wrote to memory of 4740	2564	explorer.exe	92
PID 2564 wrote to memory of 4740	2564	explorer.exe	92

C:\Users\Admin\AppData\Local\Temp\23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc.exe
"C:\Users\Admin\AppData\Local\Temp\23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4592
- C:\Users\Admin\AppData\Local\Temp\explorer.exe
  "C:\Users\Admin\AppData\Local\Temp\explorer.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2564
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\explorer.exe" "explorer.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:4740

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\explorer.exe

Filesize
169KB

MD5
4f3006a594b5508cd7d86a8e3823aac3

SHA1
516cb26210726d34709d9a6749909ad025ff6727

SHA256
23f1c183af6a0322746465beeb83e79c30ba8f497cd52d60e2ed544bb7b39ebc

SHA512
24530cdb5fb808e5ff4e2e11a32a5f9ed1706ca66884fd077da60f6b5603cc6d5d1a5c574a3a12bcb2c6e1845c3744e86740dbb6bada90d979ff2d80c530cbd5

Download Submit
memory/2564-13-0x0000000075290000-0x0000000075841000-memory.dmp

Filesize
5.7MB

Download
memory/2564-14-0x0000000075290000-0x0000000075841000-memory.dmp

Filesize
5.7MB

Download
memory/2564-16-0x0000000075290000-0x0000000075841000-memory.dmp

Filesize
5.7MB

Download
memory/4592-0-0x0000000075292000-0x0000000075293000-memory.dmp

Filesize
4KB

Download
memory/4592-1-0x0000000075290000-0x0000000075841000-memory.dmp

Filesize
5.7MB

Download
memory/4592-2-0x0000000075290000-0x0000000075841000-memory.dmp

Filesize
5.7MB

Download
memory/4592-12-0x0000000075290000-0x0000000075841000-memory.dmp

Filesize
5.7MB

Download