Malware analysis ServerSerangLab.exe Malicious activity

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File name:	ServerSerangLab.exe
Full analysis:	https://app.any.run/tasks/ef5c5dee-68fa-4b23-86aa-93d9c206cde5
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. njRAT ist ein Trojaner für den Fernzugriff. Es handelt sich um einen der am weitesten verbreiteten RATs auf dem Markt, der eine Fülle von Bildungsinformationen bietet. Interessierte Angreifer können sogar Tutorials auf YouTube finden. Dies macht ihn zu einem der beliebtesten RATs der Welt. Malware Trends Tracker >>>
Analysis date:	April 29, 2025, 02:39:14
OS:	Windows 10 Professional (build: 19044, 64 bit)
Tags:	njrat
Indicators:
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows, 2 sections
MD5:	78FF954C6099CB00731714B3FFB14F6D
SHA1:	CD84AFD90AB245EE926820BAB75892F426EBDD4E
SHA256:	6450C45956F159BAC07448E504F16857993C377A8CF8024C0B7FEF40D4A821E1
SSDEEP:	768:YsPiS5RZxqCHXt62PSr1/HyWZx6AGSKCnWCHOkaiajVQNPl1Rz4Rk30sOdMT5Bto:9/t6qSR9eiKCnmuZl1dDMST5P

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.

Launch configuration

Task duration:: 60 seconds
Heavy Evasion option:: off
Network geolocation:: off
Additional time used:: none
MITM proxy:: off
Privacy:: Public submission
Fakenet option:: off
Route via Tor:: off
Autoconfirmation of UAC:: on
Network:: on

Software preset

Internet Explorer 11.3636.19041.0
Adobe Acrobat (64-bit) (23.001.20093)
Adobe Flash Player 32 NPAPI (32.0.0.465)
Adobe Flash Player 32 PPAPI (32.0.0.465)
CCleaner (6.20)
FileZilla 3.65.0 (3.65.0)
Google Chrome (122.0.6261.70)
Google Update Helper (1.3.36.51)
Java 8 Update 271 (64-bit) (8.0.2710.9)
Java Auto Updater (2.8.271.9)
Microsoft Edge (122.0.2365.59)
Microsoft Edge Update (1.3.185.17)
Microsoft Office Professional 2019 - de-de (16.0.16026.20146)
Microsoft Office Professional 2019 - en-us (16.0.16026.20146)
Microsoft Office Professional 2019 - es-es (16.0.16026.20146)
Microsoft Office Professional 2019 - it-it (16.0.16026.20146)
Microsoft Office Professional 2019 - ja-jp (16.0.16026.20146)
Microsoft Office Professional 2019 - ko-kr (16.0.16026.20146)
Microsoft Office Professional 2019 - pt-br (16.0.16026.20146)
Microsoft Office Professional 2019 - tr-tr (16.0.16026.20146)
Microsoft Office Professionnel 2019 - fr-fr (16.0.16026.20146)
Microsoft Office профессиональный 2019 - ru-ru (16.0.16026.20146)
Microsoft OneNote - en-us (16.0.16026.20146)
Microsoft Update Health Tools (3.74.0.0)
Microsoft Visual C++ 2013 Redistributable (x64) - 12.0.30501 (12.0.30501.0)
Microsoft Visual C++ 2013 x64 Additional Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2013 x64 Minimum Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2015-2022 Redistributable (x64) - 14.36.32532 (14.36.32532.0)
Microsoft Visual C++ 2015-2022 Redistributable (x86) - 14.36.32532 (14.36.32532.0)
Microsoft Visual C++ 2022 X64 Additional Runtime - 14.36.32532 (14.36.32532)
Microsoft Visual C++ 2022 X64 Minimum Runtime - 14.36.32532 (14.36.32532)
Microsoft Visual C++ 2022 X86 Additional Runtime - 14.36.32532 (14.36.32532)
Microsoft Visual C++ 2022 X86 Minimum Runtime - 14.36.32532 (14.36.32532)
Mozilla Firefox (x64 en-US) (123.0)
Mozilla Maintenance Service (123.0)
Notepad++ (64-bit x64) (7.9.1)
Office 16 Click-to-Run Extensibility Component (16.0.15726.20202)
Office 16 Click-to-Run Licensing Component (16.0.16026.20146)
Office 16 Click-to-Run Localization Component (16.0.15726.20202)
Office 16 Click-to-Run Localization Component (16.0.15928.20198)
PowerShell 7-x64 (7.3.5.0)
Skype version 8.104 (8.104)
Update for Windows 10 for x64-based Systems (KB4023057) (2.59.0.0)
Update for Windows 10 for x64-based Systems (KB4023057) (2.63.0.0)
Update for Windows 10 for x64-based Systems (KB4480730) (2.55.0.0)
Update for Windows 10 for x64-based Systems (KB5001716) (8.93.0.0)
VLC media player (3.0.11)
WinRAR 5.91 (64-bit) (5.91.0)
Windows PC Health Check (3.6.2204.08001)

Hotfixes

Client LanguagePack Package
DotNetRollup
DotNetRollup 481
FodMetadata Package
Foundation Package
Hello Face Package
InternetExplorer Optional Package
KB5003791
KB5011048
KB5015684
KB5033052
LanguageFeatures Basic en us Package
LanguageFeatures Handwriting en us Package
LanguageFeatures OCR en us Package
LanguageFeatures Speech en us Package
LanguageFeatures TextToSpeech en us Package
MSPaint FoD Package
MediaPlayer Package
Microsoft OneCore ApplicationModel Sync Desktop FOD Package
Microsoft OneCore DirectX Database FOD Package
NetFx3 OnDemand Package
Notepad FoD Package
OpenSSH Client Package
PowerShell ISE FOD Package
Printing PMCPPC FoD Package
Printing WFS FoD Package
ProfessionalEdition
QuickAssist Package
RollupFix
ServicingStack
ServicingStack 3989
StepsRecorder Package
TabletPCMath Package
UserExperience Desktop Package
WordPad FoD Package

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MALICIOUS
- NJRAT has been detected (YARA)
  - ServerSerangLab.exe (PID: 4428)
SUSPICIOUS
- Executable content was dropped or overwritten
  - ServerSerangLab.exe (PID: 4428)
- Probably fake Windows Update file has been dropped
  - ServerSerangLab.exe (PID: 4428)
- Connects to unusual port
  - ServerSerangLab.exe (PID: 4428)
INFO
- Creates files or folders in the user directory
  - ServerSerangLab.exe (PID: 4428)
- Checks supported languages
  - ServerSerangLab.exe (PID: 4428)
- Create files in a temporary directory
  - ServerSerangLab.exe (PID: 4428)
- Reads the computer name
  - ServerSerangLab.exe (PID: 4428)
- Reads the machine GUID from the registry
  - ServerSerangLab.exe (PID: 4428)

Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report

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NjRat

(PID) Process(4428) ServerSerangLab.exe

C2192.168.101.70

Ports5552

BotnetHacKed

Options

Auto-run registry keySoftware\Microsoft\Windows\CurrentVersion\Run\af3d9111b99e2b686b330902b14c89e9

Splitter|'|'|

Version0.7d

No Malware configuration.

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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:	2025:04:28 00:47:36+00:00
ImageFileCharacteristics:	Executable, 32-bit
PEType:	PE32
LinkerVersion:	8
CodeSize:	94208
InitializedDataSize:	512
UninitializedDataSize:	-
EntryPoint:	0x18f0e
OSVersion:	4
ImageVersion:	-
SubsystemVersion:	4
Subsystem:	Windows GUI

No data.

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All screenshots are available in the full report

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Total processes

129

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

4428

"C:\Users\admin\AppData\Local\Temp\ServerSerangLab.exe"

C:\Users\admin\AppData\Local\Temp\ServerSerangLab.exe

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Modules

Images
c:\users\admin\appdata\local\temp\serverseranglab.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

NjRat

(PID) Process(4428) ServerSerangLab.exe

C2192.168.101.70

Ports5552

BotnetHacKed

Options

Auto-run registry keySoftware\Microsoft\Windows\CurrentVersion\Run\af3d9111b99e2b686b330902b14c89e9

Splitter|'|'|

Version0.7d

6392

"C:\WINDOWS\System32\SLUI.exe" RuleId=3482d82e-ca2c-4e1f-8864-da0267b484b2;Action=AutoActivate;AppId=55c92734-d682-4d71-983e-d6ec3f16059f;SkuId=4de7cb65-cdf1-4de9-8ae8-e3cce27b9f2c;NotificationInterval=1440;Trigger=TimerEvent

C:\Windows\System32\slui.exe

—

SppExtComObj.Exe

User:

NETWORK SERVICE

Company:

Microsoft Corporation

Integrity Level:

SYSTEM

Description:

Windows Activation Client

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

6436

C:\WINDOWS\system32\SppExtComObj.exe -Embedding

C:\Windows\System32\SppExtComObj.Exe

—

svchost.exe

User:

NETWORK SERVICE

Company:

Microsoft Corporation

Integrity Level:

SYSTEM

Description:

KMS Connection Broker

Version:

10.0.19041.3996 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\sppextcomobj.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\oleaut32.dll

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Total events

444

Read events

443

Write events

Delete events

Modification events


(PID) Process:	(4428) ServerSerangLab.exe	Key:	HKEY_CURRENT_USER\Environment
Operation:	write	Name:	SEE_MASK_NOZONECHECKS
Value: 1

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
4428	ServerSerangLab.exe	C:\Users\admin\AppData\Roaming\app		text
		MD5:112317D572CE0538D2D1B20D7F32170E	SHA256:FD9E9A8BE71786826787D6EB9AA28371D09B0515DDF0C19B082FE7BAC57A88A9
4428	ServerSerangLab.exe	C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\af3d9111b99e2b686b330902b14c89e9Windows Update.exe		executable
		MD5:78FF954C6099CB00731714B3FFB14F6D	SHA256:6450C45956F159BAC07448E504F16857993C377A8CF8024C0B7FEF40D4A821E1
4428	ServerSerangLab.exe	C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe		executable
		MD5:78FF954C6099CB00731714B3FFB14F6D	SHA256:6450C45956F159BAC07448E504F16857993C377A8CF8024C0B7FEF40D4A821E1

Download PCAP, analyze network streams, HTTP content and a lot more at the full report

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HTTP(S) requests

TCP/UDP connections

DNS requests

Threats

HTTP requests

PID	Process	Method	HTTP Code	IP	URL	CN	Type	Size	Reputation
5496	MoUsoCoreWorker.exe	GET	200	23.216.77.28:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	unknown	—	—	whitelisted
—	—	GET	200	23.216.77.28:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	unknown	—	—	whitelisted
—	—	GET	200	184.30.21.171:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	unknown	—	—	whitelisted
5496	MoUsoCoreWorker.exe	GET	200	184.30.21.171:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	unknown	—	—	whitelisted
6544	svchost.exe	GET	200	184.30.131.245:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	unknown	—	—	whitelisted
2088	SIHClient.exe	GET	200	95.101.149.131:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl	unknown	—	—	whitelisted
2088	SIHClient.exe	GET	200	95.101.149.131:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl	unknown	—	—	whitelisted

Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID	Process	IP	Domain	ASN	CN	Reputation
4	System	192.168.100.255:137	—	—	—	whitelisted
—	—	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
5496	MoUsoCoreWorker.exe	23.216.77.28:80	crl.microsoft.com	Akamai International B.V.	DE	whitelisted
—	—	23.216.77.28:80	crl.microsoft.com	Akamai International B.V.	DE	whitelisted
5496	MoUsoCoreWorker.exe	184.30.21.171:80	www.microsoft.com	AKAMAI-AS	DE	whitelisted
—	—	184.30.21.171:80	www.microsoft.com	AKAMAI-AS	DE	whitelisted
—	—	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
3216	svchost.exe	172.211.123.248:443	client.wns.windows.com	MICROSOFT-CORP-MSN-AS-BLOCK	FR	whitelisted
4428	ServerSerangLab.exe	192.168.101.70:5552	—	—	—	unknown

DNS requests

Domain	IP	Reputation
settings-win.data.microsoft.com	40.127.240.158 51.104.136.2 20.73.194.208	whitelisted
google.com	172.217.18.14	whitelisted
crl.microsoft.com	23.216.77.28 23.216.77.6	whitelisted
www.microsoft.com	184.30.21.171 95.101.149.131	whitelisted
client.wns.windows.com	172.211.123.248	whitelisted
login.live.com	40.126.32.76 40.126.32.68 40.126.32.133 40.126.32.140 40.126.32.72 20.190.160.3 20.190.160.130 40.126.32.138	whitelisted
ocsp.digicert.com	184.30.131.245	whitelisted
slscr.update.microsoft.com	172.202.163.200	whitelisted
fe3cr.delivery.mp.microsoft.com	20.3.187.198	whitelisted

Threats

No threats detected

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No debug info

General Info

ServerSerangLab.exe

78FF954C6099CB00731714B3FFB14F6D

CD84AFD90AB245EE926820BAB75892F426EBDD4E

6450C45956F159BAC07448E504F16857993C377A8CF8024C0B7FEF40D4A821E1

768:YsPiS5RZxqCHXt62PSr1/HyWZx6AGSKCnWCHOkaiajVQNPl1Rz4Rk30sOdMT5Bto:9/t6qSR9eiKCnmuZl1dDMST5P

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

NJRAT has been detected (YARA)

SUSPICIOUS

Executable content was dropped or overwritten

Probably fake Windows Update file has been dropped

Connects to unusual port

INFO

Creates files or folders in the user directory

Checks supported languages

Create files in a temporary directory

Reads the computer name

Reads the machine GUID from the registry

Malware configuration

NjRat

Static information

TRiD

EXIF

EXE

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Modules

Malware configuration

NjRat

Information

Modules

Information

Modules

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings