Malware analysis UxTheme.dll Malicious activity | ANY.RUN

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File name:	UxTheme.dll
Full analysis:	https://app.any.run/tasks/cf8ec433-ea90-40cb-a94f-ccb0022c7d2e
Verdict:	Malicious activity
Analysis date:	April 24, 2025, 10:53:27
OS:	Windows 10 Professional (build: 19044, 64 bit)
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32+ executable (DLL) (GUI) x86-64, for MS Windows, 8 sections
MD5:	DED81AFE8B52534D73556659DF1526FD
SHA1:	6E3E2D5A9824EFBE95B191DD3A95ECC5FFE2C13F
SHA256:	90B52BCDDAB0DAF79A483788DD0BC954A820EBC0882DEB6FB11A69E36BF61614
SSDEEP:	24576:JOgFnNQJ/ZfzYrBKIReU9OAZR+R4TtTx+RLExT1LdvgWgNcjt64EG+3:JOgFnNQJ/ZfzYrBwU9PZR+R4TtTx+RLL

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:: 300 seconds
Heavy Evasion option:: off
Network geolocation:: off
Additional time used:: 240 seconds
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
- The DLL Hijacking
  - sessionmsg.exe (PID: 1328)
  - LockScreenContentServer.exe (PID: 5360)
SUSPICIOUS
- Reads the date of Windows installation
  - PresentationSettings.exe (PID: 8048)
  - sessionmsg.exe (PID: 1328)
  - LockScreenContentServer.exe (PID: 5360)
- Process drops legitimate windows executable
  - rundll32.exe (PID: 7484)
INFO
- Process checks whether UAC notifications are on
  - PresentationSettings.exe (PID: 8048)
  - sessionmsg.exe (PID: 1328)
  - LockScreenContentServer.exe (PID: 5360)
- Manual execution by a user
  - PresentationSettings.exe (PID: 8048)
  - PresentationSettings.exe (PID: 8036)
  - SystemPropertiesAdvanced.exe (PID: 8024)
  - sessionmsg.exe (PID: 7224)
  - sessionmsg.exe (PID: 1328)
  - LockScreenContentServer.exe (PID: 5360)
  - LockScreenContentServer.exe (PID: 1388)
- Reads the machine GUID from the registry
  - PresentationSettings.exe (PID: 8048)
  - sessionmsg.exe (PID: 1328)
  - LockScreenContentServer.exe (PID: 5360)
- Reads the computer name
  - PresentationSettings.exe (PID: 8048)
  - sessionmsg.exe (PID: 1328)
  - LockScreenContentServer.exe (PID: 5360)
- Checks supported languages
  - PresentationSettings.exe (PID: 8048)
  - sessionmsg.exe (PID: 1328)
  - LockScreenContentServer.exe (PID: 5360)
- Reads the software policy settings
  - slui.exe (PID: 732)

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	\|	Win64 Executable (generic) (87.3)
.exe	\|	Generic Win/DOS Executable (6.3)
.exe	\|	DOS Executable Generic (6.3)

EXIF

EXE

MachineType:	AMD AMD64
TimeStamp:	2020:04:26 20:53:40+00:00
ImageFileCharacteristics:	Executable, Large address aware, DLL
PEType:	PE32+
LinkerVersion:	15.1
CodeSize:	593920
InitializedDataSize:	135168
UninitializedDataSize:	-
EntryPoint:	0x91620
OSVersion:	5.1
ImageVersion:	-
SubsystemVersion:	5
Subsystem:	Windows GUI
FileVersionNumber:	8.7.30.0
ProductVersionNumber:	8.7.30.0
FileFlagsMask:	0x003f
FileFlags:	(none)
FileOS:	Win32
ObjectFileType:	Executable application
FileSubtype:	-
LanguageCode:	Neutral
CharacterSet:	Unicode
CompanyName:	Microsoft Corporation
FileDescription:	Microsoft (R) Red ISAM
FileVersion:	4.00.97
FullVersion:	8.7.3_00-b00
InternalName:	MSRD2X40
LegalCopyright:	Copyright (C) Mic
InalFilename:	MSRD2X40.DL
Jet:	n Tabjrmte E
Rsn50Urdate6:	6 ProductVersion

No data.

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All screenshots are available in the full report

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Total processes

139

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

732

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

Exit code:

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

1328

C:\Users\admin\AppData\Local\MCLvW\sessionmsg.exe

—

explorer.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Microsoft Remote Desktop Services Session Message Server

Exit code:

Version:

10.0.19041.3636 (WinBuild.160101.0800)

Modules

Images
c:\users\admin\appdata\local\mclvw\sessionmsg.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

1388

C:\WINDOWS\system32\LockScreenContentServer.exe

C:\Windows\System32\LockScreenContentServer.exe

—

explorer.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

LockScreenContent Server

Exit code:

Version:

10.0.19041.3636 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\lockscreencontentserver.exe
c:\windows\system32\ntdll.dll

5360

C:\Users\admin\AppData\Local\tzzEiNEF\LockScreenContentServer.exe

—

explorer.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

LockScreenContent Server

Exit code:

Version:

10.0.19041.3636 (WinBuild.160101.0800)

Modules

Images
c:\users\admin\appdata\local\tzzeinef\lockscreencontentserver.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\win32u.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\gdi32full.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll

7224

C:\WINDOWS\system32\sessionmsg.exe

C:\Windows\System32\sessionmsg.exe

—

explorer.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Microsoft Remote Desktop Services Session Message Server

Exit code:

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\sessionmsg.exe
c:\windows\system32\ntdll.dll

7484

"C:\WINDOWS\System32\rundll32.exe" C:\Users\admin\AppData\Local\Temp\UxTheme.dll, #1

C:\Windows\System32\rundll32.exe

—

explorer.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Windows host process (Rundll32)

Exit code:

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\rundll32.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\shcore.dll
c:\windows\system32\imagehlp.dll

8024

C:\WINDOWS\system32\SystemPropertiesAdvanced.exe

C:\Windows\System32\SystemPropertiesAdvanced.exe

—

explorer.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Advanced System Settings

Exit code:

3221226540

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\systempropertiesadvanced.exe
c:\windows\system32\ntdll.dll

8036

C:\WINDOWS\system32\PresentationSettings.exe

C:\Windows\System32\PresentationSettings.exe

—

explorer.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Microsoft Mobile PC Presentation Adaptability Client

Exit code:

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\presentationsettings.exe
c:\windows\system32\ntdll.dll

8048

C:\Users\admin\AppData\Local\qdmhrP\PresentationSettings.exe

—

explorer.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Microsoft Mobile PC Presentation Adaptability Client

Exit code:

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\users\admin\appdata\local\qdmhrp\presentationsettings.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\gdi32.dll

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Total events

3 725

Read events

3 725

Write events

Delete events

Modification events

No data

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

No data

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	23.48.23.162:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	unknown	—	—	whitelisted
2920	svchost.exe	GET	404	23.35.229.160:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	unknown	—	—	whitelisted
2920	svchost.exe	GET	404	23.35.229.160:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	unknown	—	—	whitelisted
2920	svchost.exe	GET	404	23.48.23.153:80	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
—	—	20.73.194.208:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
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	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
3216	svchost.exe	172.211.123.249:443	client.wns.windows.com	MICROSOFT-CORP-MSN-AS-BLOCK	FR	whitelisted
6544	svchost.exe	40.126.31.67:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
2112	svchost.exe	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
6068	svchost.exe	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
8104	SIHClient.exe	20.12.23.50:443	slscr.update.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	US	whitelisted

DNS requests

Domain	IP	Reputation
settings-win.data.microsoft.com	20.73.194.208 40.127.240.158	whitelisted
google.com	142.250.186.78	whitelisted
client.wns.windows.com	172.211.123.249 172.211.123.248	whitelisted
login.live.com	40.126.31.67 20.190.159.2 40.126.31.2 20.190.159.23 20.190.159.0 40.126.31.73 20.190.159.68 40.126.31.3	whitelisted
slscr.update.microsoft.com	20.12.23.50	whitelisted
fe3cr.delivery.mp.microsoft.com	20.3.187.198 2603:1030:c02:2::284	whitelisted
198.187.3.20.in-addr.arpa	—	unknown
4.8.2.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.0.2.0.c.0.0.3.0.1.3.0.6.2.ip6.arpa	—	unknown
nexusrules.officeapps.live.com	52.111.227.13	whitelisted
crl.microsoft.com	23.48.23.162 23.48.23.161 23.48.23.177 23.48.23.180 23.48.23.181 23.48.23.168 23.48.23.171 23.48.23.179 23.48.23.173 23.48.23.153 23.48.23.140 23.48.23.141 23.48.23.134 23.48.23.148 23.48.23.143 23.48.23.139 23.48.23.146 23.48.23.150	whitelisted

Threats

No threats detected

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No debug info

General Info

UxTheme.dll

DED81AFE8B52534D73556659DF1526FD

6E3E2D5A9824EFBE95B191DD3A95ECC5FFE2C13F

90B52BCDDAB0DAF79A483788DD0BC954A820EBC0882DEB6FB11A69E36BF61614

24576:JOgFnNQJ/ZfzYrBKIReU9OAZR+R4TtTx+RLExT1LdvgWgNcjt64EG+3:JOgFnNQJ/ZfzYrBwU9PZR+R4TtTx+RLL

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

The DLL Hijacking

SUSPICIOUS

Reads the date of Windows installation

Process drops legitimate windows executable

INFO

Process checks whether UAC notifications are on

Manual execution by a user

Reads the machine GUID from the registry

Reads the computer name

Checks supported languages

Reads the software policy settings

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

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