njrat | 42d3b70f87a52ad776ff802da5895b36610f905f31350f25bf51a9355be343f4

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30-10-2024 22:11

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General

Target

Netflix Tools PACK/GoldFlix GC Netflix Checker/core/gfsys.exe
Size

419KB
MD5

19f1e1913d37b8698e4fc1bb350d754a
SHA1

922909897e1e2aa431bbe7974bb99849d1c18ad3
SHA256

9d9c257a3f669babda5bbbb3d143a7575f17bee0425f90f80f2ef7bd807bfbc5
SHA512

d178276ac46efd2614d94e2e1dd91b01aae7b565326b1dd831b47cebdbe292bf9df3cbca7bffbb34a826a138b681f2d4bf5f76dc54f9cca4b74f40f8a0dbbec1
SSDEEP

3072:D32GhNvn8PQ7Z21lSaR+OV9aE1+qil0lLh:z2GhN/8227EOioAlq

Score

10^/10

njrat pc_discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

PC_

hccr.sytes.net:1411

Mutex

460557edf4b4cbfb08eadcebcbd28364

Attributes

reg_key
460557edf4b4cbfb08eadcebcbd28364
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

Processes:

netsh.exe

pid process

3032 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:

gfsys.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation gfsys.exe

pid	process
3032	netsh.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	gfsys.exe

Drops startup file 2 IoCs

Processes:

winconfig.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\460557edf4b4cbfb08eadcebcbd28364.exe	winconfig.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\460557edf4b4cbfb08eadcebcbd28364.exe	winconfig.exe

Executes dropped EXE 1 IoCs

Processes:

winconfig.exe

pid process

2756 winconfig.exe

pid	process
2756	winconfig.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

winconfig.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\460557edf4b4cbfb08eadcebcbd28364 = "\"C:\\Windows\\winconfig.exe\" .."	winconfig.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\460557edf4b4cbfb08eadcebcbd28364 = "\"C:\\Windows\\winconfig.exe\" .."	winconfig.exe

Drops file in Windows directory 1 IoCs

Processes:

gfsys.exe

description ioc process

File created C:\Windows\winconfig.exe gfsys.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	ioc	process
File created	C:\Windows\winconfig.exe	gfsys.exe

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 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

Processes:

gfsys.exewinconfig.exenetsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gfsys.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winconfig.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 33 IoCs

Processes:

winconfig.exe

description	pid	process
Token: SeDebugPrivilege	2756	winconfig.exe
Token: 33	2756	winconfig.exe
Token: SeIncBasePriorityPrivilege	2756	winconfig.exe
Token: 33	2756	winconfig.exe
Token: SeIncBasePriorityPrivilege	2756	winconfig.exe
Token: 33	2756	winconfig.exe
Token: SeIncBasePriorityPrivilege	2756	winconfig.exe
Token: 33	2756	winconfig.exe
Token: SeIncBasePriorityPrivilege	2756	winconfig.exe
Token: 33	2756	winconfig.exe
Token: SeIncBasePriorityPrivilege	2756	winconfig.exe
Token: 33	2756	winconfig.exe
Token: SeIncBasePriorityPrivilege	2756	winconfig.exe
Token: 33	2756	winconfig.exe
Token: SeIncBasePriorityPrivilege	2756	winconfig.exe
Token: 33	2756	winconfig.exe
Token: SeIncBasePriorityPrivilege	2756	winconfig.exe
Token: 33	2756	winconfig.exe
Token: SeIncBasePriorityPrivilege	2756	winconfig.exe
Token: 33	2756	winconfig.exe
Token: SeIncBasePriorityPrivilege	2756	winconfig.exe
Token: 33	2756	winconfig.exe
Token: SeIncBasePriorityPrivilege	2756	winconfig.exe
Token: 33	2756	winconfig.exe
Token: SeIncBasePriorityPrivilege	2756	winconfig.exe
Token: 33	2756	winconfig.exe
Token: SeIncBasePriorityPrivilege	2756	winconfig.exe
Token: 33	2756	winconfig.exe
Token: SeIncBasePriorityPrivilege	2756	winconfig.exe
Token: 33	2756	winconfig.exe
Token: SeIncBasePriorityPrivilege	2756	winconfig.exe
Token: 33	2756	winconfig.exe
Token: SeIncBasePriorityPrivilege	2756	winconfig.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

gfsys.exewinconfig.exe

description	pid	process	target process
PID 2932 wrote to memory of 2756	2932	gfsys.exe	winconfig.exe
PID 2932 wrote to memory of 2756	2932	gfsys.exe	winconfig.exe
PID 2932 wrote to memory of 2756	2932	gfsys.exe	winconfig.exe
PID 2756 wrote to memory of 3032	2756	winconfig.exe	netsh.exe
PID 2756 wrote to memory of 3032	2756	winconfig.exe	netsh.exe
PID 2756 wrote to memory of 3032	2756	winconfig.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\Netflix Tools PACK\GoldFlix GC Netflix Checker\core\gfsys.exe
"C:\Users\Admin\AppData\Local\Temp\Netflix Tools PACK\GoldFlix GC Netflix Checker\core\gfsys.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2932
- C:\Windows\winconfig.exe
  "C:\Windows\winconfig.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:2756
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\winconfig.exe" "winconfig.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:3032

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:\Windows\winconfig.exe

Filesize
419KB

MD5
19f1e1913d37b8698e4fc1bb350d754a

SHA1
922909897e1e2aa431bbe7974bb99849d1c18ad3

SHA256
9d9c257a3f669babda5bbbb3d143a7575f17bee0425f90f80f2ef7bd807bfbc5

SHA512
d178276ac46efd2614d94e2e1dd91b01aae7b565326b1dd831b47cebdbe292bf9df3cbca7bffbb34a826a138b681f2d4bf5f76dc54f9cca4b74f40f8a0dbbec1

Download Submit
memory/2756-30-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/2756-29-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/2756-28-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/2756-26-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/2756-25-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/2756-23-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/2932-8-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/2932-0-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/2932-9-0x0000000008430000-0x0000000008466000-memory.dmp

Filesize
216KB

Download
memory/2932-7-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/2932-6-0x0000000005BE0000-0x0000000005C36000-memory.dmp

Filesize
344KB

Download
memory/2932-22-0x000000007461E000-0x000000007461F000-memory.dmp

Filesize
4KB

Download
memory/2932-24-0x0000000074610000-0x0000000074DC0000-memory.dmp

Filesize
7.7MB

Download
memory/2932-5-0x0000000005940000-0x000000000594A000-memory.dmp

Filesize
40KB

Download
memory/2932-4-0x00000000059F0000-0x0000000005A82000-memory.dmp

Filesize
584KB

Download
memory/2932-3-0x0000000005FA0000-0x0000000006544000-memory.dmp

Filesize
5.6MB

Download
memory/2932-2-0x0000000005950000-0x00000000059EC000-memory.dmp

Filesize
624KB

Download
memory/2932-1-0x0000000000EC0000-0x0000000000F30000-memory.dmp

Filesize
448KB

Download