njrat | 17b67f286ffe87085d66b07f00e56c12549a09fb8d3f275562a73312cb9b0191

General

Target

17b67f286ffe87085d66b07f00e56c12549a09fb8d3f275562a73312cb9b0191N.exe
Size

23KB
MD5

131051ebc146a5fa713e37544b36e2d0
SHA1

3d9f5143eb51373b8adc2599ba6f20420e52819d
SHA256

17b67f286ffe87085d66b07f00e56c12549a09fb8d3f275562a73312cb9b0191
SHA512

a103a9bfc8f9f9e3dd4986f613baae33592f5fd17581dab55084a837bc60625fa387def515a1e74bb49c5ca088f4343d210f17778e542fffeeb7a2ab05da671f
SSDEEP

384:ZMKyOkBkRbohza8yuTUt7u06zgV4a5pzomRvR6JZlbw8hqIusZzZr3r:y/YI1T0RpcnuAr

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
2732	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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	17b67f286ffe87085d66b07f00e56c12549a09fb8d3f275562a73312cb9b0191N.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4c7549b66a934af47e80f87411139e0a.exe	sk.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4c7549b66a934af47e80f87411139e0a.exe	sk.exe

Executes dropped EXE 1 IoCs

pid	Process
4780	sk.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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4c7549b66a934af47e80f87411139e0a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\sk.exe\" .."	sk.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\4c7549b66a934af47e80f87411139e0a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\sk.exe\" .."	sk.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	17b67f286ffe87085d66b07f00e56c12549a09fb8d3f275562a73312cb9b0191N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	4780	sk.exe
Token: 33	4780	sk.exe
Token: SeIncBasePriorityPrivilege	4780	sk.exe
Token: 33	4780	sk.exe
Token: SeIncBasePriorityPrivilege	4780	sk.exe
Token: 33	4780	sk.exe
Token: SeIncBasePriorityPrivilege	4780	sk.exe
Token: 33	4780	sk.exe
Token: SeIncBasePriorityPrivilege	4780	sk.exe
Token: 33	4780	sk.exe
Token: SeIncBasePriorityPrivilege	4780	sk.exe
Token: 33	4780	sk.exe
Token: SeIncBasePriorityPrivilege	4780	sk.exe
Token: 33	4780	sk.exe
Token: SeIncBasePriorityPrivilege	4780	sk.exe
Token: 33	4780	sk.exe
Token: SeIncBasePriorityPrivilege	4780	sk.exe
Token: 33	4780	sk.exe
Token: SeIncBasePriorityPrivilege	4780	sk.exe
Token: 33	4780	sk.exe
Token: SeIncBasePriorityPrivilege	4780	sk.exe
Token: 33	4780	sk.exe
Token: SeIncBasePriorityPrivilege	4780	sk.exe
Token: 33	4780	sk.exe
Token: SeIncBasePriorityPrivilege	4780	sk.exe
Token: 33	4780	sk.exe
Token: SeIncBasePriorityPrivilege	4780	sk.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2780 wrote to memory of 4780	2780	17b67f286ffe87085d66b07f00e56c12549a09fb8d3f275562a73312cb9b0191N.exe	84
PID 2780 wrote to memory of 4780	2780	17b67f286ffe87085d66b07f00e56c12549a09fb8d3f275562a73312cb9b0191N.exe	84
PID 2780 wrote to memory of 4780	2780	17b67f286ffe87085d66b07f00e56c12549a09fb8d3f275562a73312cb9b0191N.exe	84
PID 4780 wrote to memory of 2732	4780	sk.exe	87
PID 4780 wrote to memory of 2732	4780	sk.exe	87
PID 4780 wrote to memory of 2732	4780	sk.exe	87

C:\Users\Admin\AppData\Local\Temp\17b67f286ffe87085d66b07f00e56c12549a09fb8d3f275562a73312cb9b0191N.exe
"C:\Users\Admin\AppData\Local\Temp\17b67f286ffe87085d66b07f00e56c12549a09fb8d3f275562a73312cb9b0191N.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2780
- C:\Users\Admin\AppData\Local\Temp\sk.exe
  "C:\Users\Admin\AppData\Local\Temp\sk.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:4780
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\sk.exe" "sk.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:2732

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
23KB

MD5
131051ebc146a5fa713e37544b36e2d0

SHA1
3d9f5143eb51373b8adc2599ba6f20420e52819d

SHA256
17b67f286ffe87085d66b07f00e56c12549a09fb8d3f275562a73312cb9b0191

SHA512
a103a9bfc8f9f9e3dd4986f613baae33592f5fd17581dab55084a837bc60625fa387def515a1e74bb49c5ca088f4343d210f17778e542fffeeb7a2ab05da671f

Download Submit
memory/2780-0-0x0000000074612000-0x0000000074613000-memory.dmp

Filesize
4KB

Download
memory/2780-1-0x0000000074610000-0x0000000074BC1000-memory.dmp

Filesize
5.7MB

Download
memory/2780-2-0x0000000074610000-0x0000000074BC1000-memory.dmp

Filesize
5.7MB

Download
memory/2780-12-0x0000000074610000-0x0000000074BC1000-memory.dmp

Filesize
5.7MB

Download
memory/4780-13-0x0000000074610000-0x0000000074BC1000-memory.dmp

Filesize
5.7MB

Download
memory/4780-14-0x0000000074610000-0x0000000074BC1000-memory.dmp

Filesize
5.7MB

Download
memory/4780-16-0x0000000074610000-0x0000000074BC1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads