njrat | f601a9e75b67f9b1995c46e786287ea79248a3bb802bf8cd7b85470cd0b3d55e

General

Target

f601a9e75b67f9b1995c46e786287ea79248a3bb802bf8cd7b85470cd0b3d55eN.exe
Size

122KB
MD5

7fa5f43423a7ea200a2d318b06448060
SHA1

d9b2459289e388505c90640b6deda284e05dee77
SHA256

f601a9e75b67f9b1995c46e786287ea79248a3bb802bf8cd7b85470cd0b3d55e
SHA512

3682d839ce2ca84e48308a865bf64e5e80ac6e3b7639aebb5770eeae4ccec51fe9b408f2e5b0ec9b144b1207d2015b472d7edd4e22e0397af7ee78cb692f6ac4
SSDEEP

3072:EN5KHLqKWqxOaxGM4RDvn1vnTSQW7mrYaeZMFiC7vvf2Q9WlfPmiBq4eHGjTqyIR:C5KHLqAUaxGM4RDvn1VWSrYaeZMFiC7V

Score

10^/10

njrat defense_evasion discovery 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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4640	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	f601a9e75b67f9b1995c46e786287ea79248a3bb802bf8cd7b85470cd0b3d55eN.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b5c99258d66f4edbad7c0df6270b5949.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\b5c99258d66f4edbad7c0df6270b5949.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
1244	server.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\b5c99258d66f4edbad7c0df6270b5949 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\b5c99258d66f4edbad7c0df6270b5949 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f601a9e75b67f9b1995c46e786287ea79248a3bb802bf8cd7b85470cd0b3d55eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	1244	server.exe
Token: 33	1244	server.exe
Token: SeIncBasePriorityPrivilege	1244	server.exe
Token: 33	1244	server.exe
Token: SeIncBasePriorityPrivilege	1244	server.exe
Token: 33	1244	server.exe
Token: SeIncBasePriorityPrivilege	1244	server.exe
Token: 33	1244	server.exe
Token: SeIncBasePriorityPrivilege	1244	server.exe
Token: 33	1244	server.exe
Token: SeIncBasePriorityPrivilege	1244	server.exe
Token: 33	1244	server.exe
Token: SeIncBasePriorityPrivilege	1244	server.exe
Token: 33	1244	server.exe
Token: SeIncBasePriorityPrivilege	1244	server.exe
Token: 33	1244	server.exe
Token: SeIncBasePriorityPrivilege	1244	server.exe
Token: 33	1244	server.exe
Token: SeIncBasePriorityPrivilege	1244	server.exe
Token: 33	1244	server.exe
Token: SeIncBasePriorityPrivilege	1244	server.exe
Token: 33	1244	server.exe
Token: SeIncBasePriorityPrivilege	1244	server.exe
Token: 33	1244	server.exe
Token: SeIncBasePriorityPrivilege	1244	server.exe
Token: 33	1244	server.exe
Token: SeIncBasePriorityPrivilege	1244	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4356 wrote to memory of 1244	4356	f601a9e75b67f9b1995c46e786287ea79248a3bb802bf8cd7b85470cd0b3d55eN.exe	84
PID 4356 wrote to memory of 1244	4356	f601a9e75b67f9b1995c46e786287ea79248a3bb802bf8cd7b85470cd0b3d55eN.exe	84
PID 4356 wrote to memory of 1244	4356	f601a9e75b67f9b1995c46e786287ea79248a3bb802bf8cd7b85470cd0b3d55eN.exe	84
PID 1244 wrote to memory of 4640	1244	server.exe	92
PID 1244 wrote to memory of 4640	1244	server.exe	92
PID 1244 wrote to memory of 4640	1244	server.exe	92

C:\Users\Admin\AppData\Local\Temp\f601a9e75b67f9b1995c46e786287ea79248a3bb802bf8cd7b85470cd0b3d55eN.exe
"C:\Users\Admin\AppData\Local\Temp\f601a9e75b67f9b1995c46e786287ea79248a3bb802bf8cd7b85470cd0b3d55eN.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4356
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.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:1244
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:4640

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\server.exe

Filesize
122KB

MD5
7fa5f43423a7ea200a2d318b06448060

SHA1
d9b2459289e388505c90640b6deda284e05dee77

SHA256
f601a9e75b67f9b1995c46e786287ea79248a3bb802bf8cd7b85470cd0b3d55e

SHA512
3682d839ce2ca84e48308a865bf64e5e80ac6e3b7639aebb5770eeae4ccec51fe9b408f2e5b0ec9b144b1207d2015b472d7edd4e22e0397af7ee78cb692f6ac4

Download Submit
memory/1244-15-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/1244-17-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/1244-19-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/4356-0-0x0000000075142000-0x0000000075143000-memory.dmp

Filesize
4KB

Download
memory/4356-1-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/4356-2-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download
memory/4356-16-0x0000000075140000-0x00000000756F1000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads