Malware analysis npp.8.8.1.Installer.x64.exe Malicious activity

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File name:	npp.8.8.1.Installer.x64.exe
Full analysis:	https://app.any.run/tasks/fda864e0-785d-4af3-9cd1-cff863018214
Verdict:	Malicious activity
Analysis date:	June 06, 2025, 12:47:43
OS:	Windows 10 Professional (build: 19044, 64 bit)
Indicators:
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive, 5 sections
MD5:	9E0364B57FD31A98CC39AAFE0B9A1F38
SHA1:	700B4DADEB1E2284B5B372EB88331441435C86C3
SHA256:	605C68624939BA55AC9BBBA4EA3B7B3A602A91D8103862D232A14ADC0176EFCA
SSDEEP:	98304:Hwx8/lQ89C+gjklLWjuSycten47F0v2/TYsdUwxfD6AEU8ytjU27xkD89mB23SlU:arjEqAh+DxwIXHzU9K

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:: on
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
- Registers / Runs the DLL via REGSVR32.EXE
  - npp.8.8.1.Installer.x64.exe (PID: 3268)
SUSPICIOUS
- Executable content was dropped or overwritten
  - npp.8.8.1.Installer.x64.exe (PID: 3268)
- Malware-specific behavior (creating "System.dll" in Temp)
  - npp.8.8.1.Installer.x64.exe (PID: 3268)
- There is functionality for taking screenshot (YARA)
  - npp.8.8.1.Installer.x64.exe (PID: 3268)
- The process creates files with name similar to system file names
  - npp.8.8.1.Installer.x64.exe (PID: 3268)
- Searches for installed software
  - npp.8.8.1.Installer.x64.exe (PID: 3268)
- Creates/Modifies COM task schedule object
  - regsvr32.exe (PID: 6456)
- Creates a software uninstall entry
  - npp.8.8.1.Installer.x64.exe (PID: 3268)
INFO
- The sample compiled with english language support
  - npp.8.8.1.Installer.x64.exe (PID: 3268)
- Checks supported languages
  - npp.8.8.1.Installer.x64.exe (PID: 3268)
- Reads the computer name
  - npp.8.8.1.Installer.x64.exe (PID: 3268)
- Create files in a temporary directory
  - npp.8.8.1.Installer.x64.exe (PID: 3268)
- Creates files in the program directory
  - npp.8.8.1.Installer.x64.exe (PID: 3268)
- Creates files or folders in the user directory
  - npp.8.8.1.Installer.x64.exe (PID: 3268)

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

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No Malware configuration.

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TRiD

.exe	\|	Win32 Executable MS Visual C++ (generic) (67.4)
.dll	\|	Win32 Dynamic Link Library (generic) (14.2)
.exe	\|	Win32 Executable (generic) (9.7)
.exe	\|	Generic Win/DOS Executable (4.3)
.exe	\|	DOS Executable Generic (4.3)

EXIF

EXE

MachineType:	Intel 386 or later, and compatibles
TimeStamp:	2023:07:02 02:09:43+00:00
ImageFileCharacteristics:	No relocs, Executable, No line numbers, No symbols, 32-bit
PEType:	PE32
LinkerVersion:	6
CodeSize:	26624
InitializedDataSize:	139776
UninitializedDataSize:	2048
EntryPoint:	0x3645
OSVersion:	4
ImageVersion:	6
SubsystemVersion:	4
Subsystem:	Windows GUI
FileVersionNumber:	8.8.1.0
ProductVersionNumber:	8.8.1.0
FileFlagsMask:	0x0000
FileFlags:	(none)
FileOS:	Win32
ObjectFileType:	Executable application
FileSubtype:	-
LanguageCode:	English (U.S.)
CharacterSet:	Unicode
CompanyName:	Don HO don.h@free.fr
FileDescription:	Notepad++ : a free (GNU) source code editor
FileVersion:	8.8.1.0
LegalCopyright:	Copyleft 1998-2017 by Don HO
ProductName:	Notepad++
ProductVersion:	8.81

No data.

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All screenshots are available in the full report

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Total processes

128

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

872

C:\WINDOWS\System32\slui.exe -Embedding

C:\Windows\System32\slui.exe

—

svchost.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

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

2616

"C:\Users\admin\Desktop\npp.8.8.1.Installer.x64.exe"

C:\Users\admin\Desktop\npp.8.8.1.Installer.x64.exe

—

explorer.exe

User:

admin

Company:

Don HO don.h@free.fr

Integrity Level:

MEDIUM

Description:

Notepad++ : a free (GNU) source code editor

Exit code:

3221226540

Version:

8.8.1.0

Modules

Images
c:\users\admin\desktop\npp.8.8.1.installer.x64.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll

3268

"C:\Users\admin\Desktop\npp.8.8.1.Installer.x64.exe"

C:\Users\admin\Desktop\npp.8.8.1.Installer.x64.exe

explorer.exe

User:

admin

Company:

Don HO don.h@free.fr

Integrity Level:

HIGH

Description:

Notepad++ : a free (GNU) source code editor

Version:

8.8.1.0

Modules

Images
c:\users\admin\desktop\npp.8.8.1.installer.x64.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\advapi32.dll

6456

/s "C:\Program Files\Notepad++\contextMenu\NppShell.dll"

C:\Windows\System32\regsvr32.exe

—

regsvr32.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

HIGH

Description:

Microsoft(C) Register Server

Exit code:

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\regsvr32.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\aclayers.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\user32.dll
c:\windows\system32\win32u.dll
c:\windows\system32\gdi32.dll

7888

regsvr32 /s "C:\Program Files\Notepad++\contextMenu\NppShell.dll"

C:\Windows\SysWOW64\regsvr32.exe

—

npp.8.8.1.Installer.x64.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

HIGH

Description:

Microsoft(C) Register Server

Exit code:

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\syswow64\regsvr32.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\aclayers.dll

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Total events

737

Read events

718

Write events

Delete events

Modification events


(PID) Process:	(3268) npp.8.8.1.Installer.x64.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Notepad++
Operation:	write	Name:	InstallerLanguage
Value: 1033
(PID) Process:	(3268) npp.8.8.1.Installer.x64.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Notepad++
Operation:	write	Name:	DisplayName
Value: Notepad++ (64-bit x64)
(PID) Process:	(3268) npp.8.8.1.Installer.x64.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Notepad++
Operation:	write	Name:	Publisher
Value: Notepad++ Team
(PID) Process:	(3268) npp.8.8.1.Installer.x64.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Notepad++
Operation:	write	Name:	MajorVersion
Value: 8
(PID) Process:	(3268) npp.8.8.1.Installer.x64.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Notepad++
Operation:	write	Name:	MinorVersion
Value: 81
(PID) Process:	(3268) npp.8.8.1.Installer.x64.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Notepad++
Operation:	write	Name:	UninstallString
Value: "C:\Program Files\Notepad++\uninstall.exe"
(PID) Process:	(3268) npp.8.8.1.Installer.x64.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Notepad++
Operation:	write	Name:	QuietUninstallString
Value: "C:\Program Files\Notepad++\uninstall.exe" /S
(PID) Process:	(3268) npp.8.8.1.Installer.x64.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Notepad++
Operation:	write	Name:	DisplayIcon
Value: C:\Program Files\Notepad++\notepad++.exe
(PID) Process:	(3268) npp.8.8.1.Installer.x64.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Notepad++
Operation:	write	Name:	DisplayVersion
Value: 8.8.1
(PID) Process:	(3268) npp.8.8.1.Installer.x64.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Notepad++
Operation:	write	Name:	URLInfoAbout
Value: https://notepad-plus-plus.org/

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Executable files

Suspicious files

Text files

206

Unknown types

Dropped files

PID	Process	Filename		Type
3268	npp.8.8.1.Installer.x64.exe	C:\Users\admin\AppData\Local\Temp\nsr46F.tmp\System.dll		executable
		MD5:4ADD245D4BA34B04F213409BFE504C07	SHA256:9111099EFE9D5C9B391DC132B2FAF0A3851A760D4106D5368E30AC744EB42706
3268	npp.8.8.1.Installer.x64.exe	C:\Users\admin\AppData\Local\Temp\nsr46F.tmp\modern-header.bmp		image
		MD5:56DA15FDB8D96F8F5C649DCB5E79D775	SHA256:BB90D4338D2474138473E6B16E94B0237EE847BEA45019ED0DD4439C71BD233E
3268	npp.8.8.1.Installer.x64.exe	C:\Program Files\Notepad++\autoCompletion\raku.xml		xml
		MD5:3204AAD1FDD74450017479C0AA953E56	SHA256:20809301E7D81E43AD38755A07801D290B07062CC7A0775C1101D0DD9847437F
3268	npp.8.8.1.Installer.x64.exe	C:\Program Files\Notepad++\functionList\cpp.xml		xml
		MD5:C794BB828625F83122E89B24BBC5F0C8	SHA256:40CF1AF5650B699A947899D2B43A00DCB64CDEAF080651C82A7930910C1C03F4
3268	npp.8.8.1.Installer.x64.exe	C:\Users\admin\AppData\Local\Temp\nsr46F.tmp\InstallOptions.dll		executable
		MD5:D095B082B7C5BA4665D40D9C5042AF6D	SHA256:B2091205E225FC07DAF1101218C64CE62A4690CACAC9C3D0644D12E93E4C213C
3268	npp.8.8.1.Installer.x64.exe	C:\Users\admin\AppData\Local\Temp\nsr46F.tmp\LangDLL.dll		executable
		MD5:50016010FB0D8DB2BC4CD258CEB43BE5	SHA256:32230128C18574C1E860DFE4B17FE0334F685740E27BC182E0D525A8948C9C2E
3268	npp.8.8.1.Installer.x64.exe	C:\Program Files\Notepad++\autoCompletion\cobol.xml		xml
		MD5:C435D68DF074BA8D660EBACE763E9DA9	SHA256:7690E1BBE3EE5D55B993EBC1F41DF35F5BF1B7AAC7C6B6152A6F1112CB9A6773
3268	npp.8.8.1.Installer.x64.exe	C:\Program Files\Notepad++\autoCompletion\powershell.xml		xml
		MD5:D161F77EA1500DE3D863BE2E0F91E16C	SHA256:6123E3294CCFC27143361426EB5874E8EFAE8A31B26E0078776DAF82CF74D8B0
3268	npp.8.8.1.Installer.x64.exe	C:\Program Files\Notepad++\autoCompletion\typescript.xml		xml
		MD5:948B1E1B251350BABAF87A3D314DC6F3	SHA256:A09F978AEBA209E18CD424D98C8BAFB6165777E3992EB09E5E7E0A26BDED4410
3268	npp.8.8.1.Installer.x64.exe	C:\Program Files\Notepad++\autoCompletion\gdscript.xml		xml
		MD5:E4A787C8BE6FFA469D2914A03622A08D	SHA256:6B0955260345C49A52D8BD35F1A6CFB98F7048894EABABCCE38EEDED00EF630D

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
2920	svchost.exe	GET	404	2.23.181.156:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	unknown	—	—	whitelisted
2920	svchost.exe	GET	404	2.16.168.124:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.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
—	—	51.104.136.2:443	—	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
6208	RUXIMICS.exe	51.104.136.2:443	—	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
7636	svchost.exe	51.104.136.2:443	—	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
4892	slui.exe	40.91.76.224:443	activation-v2.sls.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	US	whitelisted
2920	svchost.exe	2.16.168.124:80	crl.microsoft.com	Akamai International B.V.	RU	whitelisted
2920	svchost.exe	2.23.181.156:80	www.microsoft.com	AKAMAI-AS	DE	whitelisted

DNS requests

Domain	IP	Reputation
google.com	142.250.186.174	whitelisted
dns.msftncsi.com	131.107.255.255	whitelisted
activation-v2.sls.microsoft.com	40.91.76.224	whitelisted
crl.microsoft.com	2.16.168.124 2.16.168.114	whitelisted
www.microsoft.com	2.23.181.156	whitelisted

Threats

No threats detected

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No debug info

General Info

npp.8.8.1.Installer.x64.exe

9E0364B57FD31A98CC39AAFE0B9A1F38

700B4DADEB1E2284B5B372EB88331441435C86C3

605C68624939BA55AC9BBBA4EA3B7B3A602A91D8103862D232A14ADC0176EFCA

98304:Hwx8/lQ89C+gjklLWjuSycten47F0v2/TYsdUwxfD6AEU8ytjU27xkD89mB23SlU:arjEqAh+DxwIXHzU9K

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Registers / Runs the DLL via REGSVR32.EXE

SUSPICIOUS

Executable content was dropped or overwritten

Malware-specific behavior (creating "System.dll" in Temp)

There is functionality for taking screenshot (YARA)

The process creates files with name similar to system file names

Searches for installed software

Creates/Modifies COM task schedule object

Creates a software uninstall entry

INFO

The sample compiled with english language support

Checks supported languages

Reads the computer name

Create files in a temporary directory

Creates files in the program directory

Creates files or folders in the user directory

Malware configuration

Static information

TRiD

EXIF

EXE

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings