njrat | 9b39db2bbf6b71edae4d8410792a1067fb2bb4fa19a2571a716e6ce03fa2eb37

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-11-2024 22:36

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General

Target

9b39db2bbf6b71edae4d8410792a1067fb2bb4fa19a2571a716e6ce03fa2eb37.exe
Size

156KB
MD5

a0f88bc237eddf287d6a555cd55550f6
SHA1

484c57cd8fdb6a099dce818a362bd856e1dcefcb
SHA256

9b39db2bbf6b71edae4d8410792a1067fb2bb4fa19a2571a716e6ce03fa2eb37
SHA512

ff8fb1c5003e263b8fb600ba4b837de090c939d0de2a1d1bef982841155708ab430ac90a184b12c84a5ca325493da0d168080b141cc9a759e0ce87fc1fad4826
SSDEEP

3072:XCtB0x06xmjs7e2QTeJ6VF+Ycp4wEkkD3rc4naoAkNFM3odi0GAL:Sjd

Score

10^/10

njrat vitima discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

Vitima

downhacking.duckdns.org:1177

Mutex

0d39e4190d68272f174cf71722404520

Attributes

reg_key
0d39e4190d68272f174cf71722404520
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
2032	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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	9b39db2bbf6b71edae4d8410792a1067fb2bb4fa19a2571a716e6ce03fa2eb37.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\0d39e4190d68272f174cf71722404520.exe	taskhost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\0d39e4190d68272f174cf71722404520.exe	taskhost.exe

Executes dropped EXE 1 IoCs

pid	Process
696	taskhost.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-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\0d39e4190d68272f174cf71722404520 = "\"C:\\Users\\Admin\\taskhost.exe\" .."	taskhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\0d39e4190d68272f174cf71722404520 = "\"C:\\Users\\Admin\\taskhost.exe\" .."	taskhost.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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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	9b39db2bbf6b71edae4d8410792a1067fb2bb4fa19a2571a716e6ce03fa2eb37.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe
696	taskhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	696	taskhost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4508 wrote to memory of 696	4508	9b39db2bbf6b71edae4d8410792a1067fb2bb4fa19a2571a716e6ce03fa2eb37.exe	82
PID 4508 wrote to memory of 696	4508	9b39db2bbf6b71edae4d8410792a1067fb2bb4fa19a2571a716e6ce03fa2eb37.exe	82
PID 4508 wrote to memory of 696	4508	9b39db2bbf6b71edae4d8410792a1067fb2bb4fa19a2571a716e6ce03fa2eb37.exe	82
PID 696 wrote to memory of 2032	696	taskhost.exe	83
PID 696 wrote to memory of 2032	696	taskhost.exe	83
PID 696 wrote to memory of 2032	696	taskhost.exe	83

C:\Users\Admin\AppData\Local\Temp\9b39db2bbf6b71edae4d8410792a1067fb2bb4fa19a2571a716e6ce03fa2eb37.exe
"C:\Users\Admin\AppData\Local\Temp\9b39db2bbf6b71edae4d8410792a1067fb2bb4fa19a2571a716e6ce03fa2eb37.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4508
- C:\Users\Admin\taskhost.exe
  "C:\Users\Admin\taskhost.exe"
  2⤵
  - 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:696
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\taskhost.exe" "taskhost.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2032

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\taskhost.exe

Filesize
156KB

MD5
a0f88bc237eddf287d6a555cd55550f6

SHA1
484c57cd8fdb6a099dce818a362bd856e1dcefcb

SHA256
9b39db2bbf6b71edae4d8410792a1067fb2bb4fa19a2571a716e6ce03fa2eb37

SHA512
ff8fb1c5003e263b8fb600ba4b837de090c939d0de2a1d1bef982841155708ab430ac90a184b12c84a5ca325493da0d168080b141cc9a759e0ce87fc1fad4826

Download Submit
memory/696-39-0x00000000053D0000-0x00000000053DA000-memory.dmp

Filesize
40KB

Download
memory/696-41-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/696-44-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/696-43-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/696-42-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/696-35-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/696-37-0x0000000075210000-0x00000000759C0000-memory.dmp

Filesize
7.7MB

Download
memory/696-38-0x0000000005420000-0x00000000054B2000-memory.dmp

Filesize
584KB

Download
memory/696-40-0x0000000005620000-0x0000000005686000-memory.dmp

Filesize
408KB

Download
memory/4508-0-0x000000007521E000-0x000000007521F000-memory.dmp

Filesize
4KB

Download
memory/4508-2-0x0000000005A00000-0x0000000005A9C000-memory.dmp

Filesize
624KB

Download
memory/4508-1-0x0000000000FC0000-0x0000000000FEE000-memory.dmp

Filesize
184KB

Download
memory/4508-4-0x0000000006050000-0x00000000065F4000-memory.dmp

Filesize
5.6MB

Download
memory/4508-3-0x00000000033E0000-0x00000000033EE000-memory.dmp

Filesize
56KB

Download