File name:

njratrisk.exe

Full analysis: https://app.any.run/tasks/398f4846-75a6-4aa2-ba61-a247edf98760
Verdict: Malicious activity
Threats:

njRAT is a remote access trojan. It is one of the most widely accessible RATs on the market that features an abundance of educational information. Interested attackers can even find tutorials on YouTube. This allows it to become one of the most popular RATs in the world.

Malware Trends Tracker     >>>
Analysis date: April 29, 2025, 15:24:58
OS: Windows 10 Professional (build: 19044, 64 bit)
Tags:
njrat
auto-startup
Indicators:
MIME: application/vnd.microsoft.portable-executable
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows, 2 sections
MD5:

73B58FD85C56F80FA3A1E76BB6768EE4

SHA1:

7E652EA9B9C02352FECA9C7367DC13F143FBDFDC

SHA256:

D4C19E1F1CAAB0F724BBA70B3C57D1C42EB7C7CC49C3A2882B211DB80FC13A58

SSDEEP:

768:ssPPyLipEImFtP5/rn77VWXVYpPPSiC2ahiajVQNPl1Rz4Rk3IsOdMTHBto:ZUtP5/rYXSCiC2CuZl1dDwSTHP

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

  • MALICIOUS

    • Uses Task Scheduler to run other applications

      • server.exe (PID: 7876)

    • Create files in the Startup directory

      • server.exe (PID: 7876)

    • NJRAT has been detected (YARA)

      • server.exe (PID: 7876)

  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • njratrisk.exe (PID: 7808)
      • server.exe (PID: 7876)

    • Reads security settings of Internet Explorer

      • njratrisk.exe (PID: 7808)

    • Starts itself from another location

      • njratrisk.exe (PID: 7808)

    • Probably fake Windows Update file has been dropped

      • server.exe (PID: 7876)

    • Creates file in the systems drive root

      • server.exe (PID: 7876)

    • Uses NETSH.EXE to add a firewall rule or allowed programs

      • server.exe (PID: 7876)

    • Uses NETSH.EXE to delete a firewall rule or allowed programs

      • server.exe (PID: 7876)

    • The process executes via Task Scheduler

      • StUpdate.exe (PID: 5968)
      • StUpdate.exe (PID: 4988)

  • INFO

    • Creates files or folders in the user directory

      • njratrisk.exe (PID: 7808)
      • server.exe (PID: 7876)

    • Reads the computer name

      • njratrisk.exe (PID: 7808)
      • server.exe (PID: 7876)
      • Microsoft Corporation.exe (PID: 7552)

    • Create files in a temporary directory

      • njratrisk.exe (PID: 7808)
      • server.exe (PID: 7876)
      • Microsoft Corporation.exe (PID: 7552)

    • Checks supported languages

      • njratrisk.exe (PID: 7808)
      • server.exe (PID: 7876)
      • Microsoft Corporation.exe (PID: 7552)

    • Process checks computer location settings

      • njratrisk.exe (PID: 7808)

    • Auto-launch of the file from Startup directory

      • server.exe (PID: 7876)

    • Reads the software policy settings

      • slui.exe (PID: 5116)

    • Manual execution by a user

      • Microsoft Corporation.exe (PID: 7552)

    • Checks proxy server information

      • slui.exe (PID: 5116)

    • Reads the machine GUID from the registry

      • server.exe (PID: 7876)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Generic CIL Executable (.NET, Mono, etc.) (56.7)
.exe | Win64 Executable (generic) (21.3)
.scr | Windows screen saver (10.1)
.dll | Win32 Dynamic Link Library (generic) (5)
.exe | Win32 Executable (generic) (3.4)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2025:04:10 08:18:04+00:00
ImageFileCharacteristics: Executable, 32-bit
PEType: PE32
LinkerVersion: 8
CodeSize: 94208
InitializedDataSize: 512
UninitializedDataSize: -
EntryPoint: 0x18f5e
OSVersion: 4
ImageVersion: -
SubsystemVersion: 4
Subsystem: Windows GUI
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
133
Monitored processes
14
Malicious processes
2
Suspicious processes
0

Behavior graph

Click at the process to see the details
start njratrisk.exe #NJRAT server.exe netsh.exe no specs conhost.exe no specs netsh.exe no specs netsh.exe no specs conhost.exe no specs conhost.exe no specs schtasks.exe no specs conhost.exe no specs microsoft corporation.exe no specs stupdate.exe no specs slui.exe stupdate.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
4988"C:\Users\admin\AppData\Local\Temp/StUpdate.exe"C:\Users\admin\AppData\Local\Temp\StUpdate.exe—svchost.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
3221226540
Modules
Images
c:\users\admin\appdata\local\temp\stupdate.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
5116C:\WINDOWS\System32\slui.exe -EmbeddingC:\Windows\System32\slui.exe
svchost.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Activation Client
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\slui.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\user32.dll
5968"C:\Users\admin\AppData\Local\Temp/StUpdate.exe"C:\Users\admin\AppData\Local\Temp\StUpdate.exe—svchost.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
3221226540
Modules
Images
c:\users\admin\appdata\local\temp\stupdate.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
7552"C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe"C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe—explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\roaming\microsoft\windows\start menu\programs\startup\microsoft corporation.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\mscoree.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
7808"C:\Users\admin\Desktop\njratrisk.exe" C:\Users\admin\Desktop\njratrisk.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\desktop\njratrisk.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\mscoree.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
7876"C:\Users\admin\AppData\Roaming\server.exe" C:\Users\admin\AppData\Roaming\server.exe
njratrisk.exe
User:
admin
Integrity Level:
MEDIUM
Modules
Images
c:\users\admin\appdata\roaming\server.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\mscoree.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
7932netsh firewall add allowedprogram "C:\Users\admin\AppData\Roaming\server.exe" "server.exe" ENABLEC:\Windows\SysWOW64\netsh.exe—server.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Network Command Shell
Exit code:
1
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\syswow64\netsh.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\msvcrt.dll
7940\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exe—netsh.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Console Window Host
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\conhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\shcore.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\rpcrt4.dll
8028netsh firewall delete allowedprogram "C:\Users\admin\AppData\Roaming\server.exe"C:\Windows\SysWOW64\netsh.exe—server.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Network Command Shell
Exit code:
1
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\syswow64\netsh.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\msvcrt.dll
8040netsh firewall add allowedprogram "C:\Users\admin\AppData\Roaming\server.exe" "server.exe" ENABLEC:\Windows\SysWOW64\netsh.exe—server.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Network Command Shell
Exit code:
1
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\syswow64\netsh.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\msvcrt.dll
Total events
5 356
Read events
5 355
Write events
1
Delete events
0

Modification events

(PID) Process:(7876) server.exeKey:HKEY_CURRENT_USER\Environment
Operation:writeName:SEE_MASK_NOZONECHECKS
Value:
1
Executable files
4
Suspicious files
0
Text files
1
Unknown types
0

Dropped files

PID
Process
Filename
Type
7876server.exeC:\Users\admin\AppData\Local\Temp\StUpdate.exeexecutable
MD5:73B58FD85C56F80FA3A1E76BB6768EE4
SHA256:D4C19E1F1CAAB0F724BBA70B3C57D1C42EB7C7CC49C3A2882B211DB80FC13A58
7808njratrisk.exeC:\Users\admin\AppData\Roaming\apptext
MD5:112317D572CE0538D2D1B20D7F32170E
SHA256:FD9E9A8BE71786826787D6EB9AA28371D09B0515DDF0C19B082FE7BAC57A88A9
7808njratrisk.exeC:\Users\admin\AppData\Roaming\server.exeexecutable
MD5:73B58FD85C56F80FA3A1E76BB6768EE4
SHA256:D4C19E1F1CAAB0F724BBA70B3C57D1C42EB7C7CC49C3A2882B211DB80FC13A58
7876server.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exeexecutable
MD5:73B58FD85C56F80FA3A1E76BB6768EE4
SHA256:D4C19E1F1CAAB0F724BBA70B3C57D1C42EB7C7CC49C3A2882B211DB80FC13A58
7876server.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bf7aef3201890a6941a13b2b6818eae8Windows Update.exeexecutable
MD5:73B58FD85C56F80FA3A1E76BB6768EE4
SHA256:D4C19E1F1CAAB0F724BBA70B3C57D1C42EB7C7CC49C3A2882B211DB80FC13A58
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
2
TCP/UDP connections
19
DNS requests
4
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
—
—
POST
500
40.91.76.224:443
https://activation-v2.sls.microsoft.com/SLActivateProduct/SLActivateProduct.asmx?configextension=Retail
unknown
xml
512 b
whitelisted
—
—
POST
500
40.91.76.224:443
https://activation-v2.sls.microsoft.com/SLActivateProduct/SLActivateProduct.asmx?configextension=Retail
unknown
xml
512 b
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
—
—
51.104.136.2:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
4
System
192.168.100.255:137
—
—
—
whitelisted
4
System
192.168.100.255:138
—
—
—
whitelisted
—
—
40.127.240.158:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted
7444
slui.exe
40.91.76.224:443
activation-v2.sls.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
US
whitelisted
5116
slui.exe
40.91.76.224:443
activation-v2.sls.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
US
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 51.104.136.2
  • 40.127.240.158
whitelisted
google.com
  • 142.250.185.110
whitelisted
activation-v2.sls.microsoft.com
  • 40.91.76.224
whitelisted

Threats

No threats detected
No debug info
Interactive malware hunting service ANY.RUN
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Reports
njratrisk.exe