Malware analysis microsoft.exe Malicious activity | ANY.RUN

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File name:	microsoft.exe
Full analysis:	https://app.any.run/tasks/f335f711-ab89-457e-ae42-9e004321db99
Verdict:	Malicious activity
Threats:	Quasar is a very popular RAT in the world thanks to its code being available in open-source. This malware can be used to control the victim’s computer remotely. Malware Trends Tracker >>>
Analysis date:	May 12, 2025, 02:12:06
OS:	Windows 10 Professional (build: 19044, 64 bit)
Tags:	quasar
Indicators:
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows, 3 sections
MD5:	8AEF914A8FD0118A50A99F630131396F
SHA1:	28DB1F3C8BA3D4F424FA7597B8D6C6EF964FF8B5
SHA256:	D981831BCBB85897CE3C2D2F997A9821EDA5328C1EF0E0F709A78E31ACBAA42E
SSDEEP:	49152:mPgGOhX02hD2nPiLq3A6770DODdl/rADxXhCk/3DgIP7RZq38A+xzK/g8Zzq7uoj:H2nP6q3A6770DODdl/rADxRLDgQ4U

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:: 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
- QUASAR has been detected (YARA)
  - microsoft.exe (PID: 4448)
SUSPICIOUS
- There is functionality for taking screenshot (YARA)
  - microsoft.exe (PID: 4448)
INFO
- Checks supported languages
  - microsoft.exe (PID: 4448)
- Reads the machine GUID from the registry
  - microsoft.exe (PID: 4448)
- Reads Environment values
  - microsoft.exe (PID: 4448)
- Reads the computer name
  - microsoft.exe (PID: 4448)
- Reads the software policy settings
  - slui.exe (PID: 3676)
  - slui.exe (PID: 5800)
- Checks proxy server information
  - slui.exe (PID: 5800)

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

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Quasar

(PID) Process(4448) microsoft.exe

Version1.4.1

C2 (2)18.216.205.28:4782

Sub_Dirmicrosoft.exe

Install_Namemicrosoft.exe

Mutexbbfda8c3-e98b-44c6-a299-e861e6b6ca73

Startupmicrosoft.exe

TagInmaculada

LogDirLogs

SignaturecPwM51xFWgNtonbGsZjDNcc4QSqn3I1S0RD7ICGIyinqetB3B/gqlG/pPtLjzLuNEYINiHA1Z9JeSu4QlbCLbM9ml2peK+IC61q4+jOlnFnkm5aLsS2T3qK1QjNFNPw3jOutJtvweDeK6jii7pBzRfVQ4ka2krndcj5BLlbkwWMXdt3lbLpT+5ovcrL7ddymjrVVpn6hjME2UL0DrdN06S/23hXlq6JtzWZzQF9DZJjBXVueOwQ/zc4NuQ6CHemgz9kptHQyII0+osfCuD1GHjyWqPsERM1+JHxbAyeZ8hl5...

CertificateMIIE9DCCAtygAwIBAgIQAPSeG7ZtfLspW4/oC+ZdNzANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI1MDUxMDAyMDAwN1oYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAu4Tqm1grrPIYA2esha7GAWji9SpP2OAT/TOQn/i2kqTcPnlYIGypIHRNtP+vJfjrmJNuBxjr...

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:	2025:05:12 01:55:52+00:00
ImageFileCharacteristics:	Executable, 32-bit
PEType:	PE32
LinkerVersion:	8
CodeSize:	3261952
InitializedDataSize:	3584
UninitializedDataSize:	-
EntryPoint:	0x31e3fe
OSVersion:	4
ImageVersion:	-
SubsystemVersion:	4
Subsystem:	Windows GUI
FileVersionNumber:	1.0.0.0
ProductVersionNumber:	1.0.0.0
FileFlagsMask:	0x003f
FileFlags:	(none)
FileOS:	Win32
ObjectFileType:	Executable application
FileSubtype:	-
LanguageCode:	Neutral
CharacterSet:	Unicode
Comments:	-
CompanyName:	Microsoft
FileDescription:	Microsoft Windows
FileVersion:	1.0.0.0
InternalName:	Microsoft.exe
LegalCopyright:	Microsoft 2025
LegalTrademarks:	Microsoft
OriginalFileName:	Microsoft.exe
ProductName:	Microsoft
ProductVersion:	1.0.0.0
AssemblyVersion:	1.0.0.0

No data.

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All screenshots are available in the full report

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Total processes

135

Monitored processes

4

Malicious processes

1

Suspicious processes

0

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

744

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

Exit code:

0

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

3676

"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

Exit code:

1

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

4448

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

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

explorer.exe

User:

admin

Company:

Microsoft

Integrity Level:

MEDIUM

Description:

Microsoft Windows

Version:

1.0.0.0

Modules

Images
c:\users\admin\appdata\local\temp\microsoft.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\mscoree.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll

Quasar

(PID) Process(4448) microsoft.exe

Version1.4.1

C2 (2)18.216.205.28:4782

Sub_Dirmicrosoft.exe

Install_Namemicrosoft.exe

Mutexbbfda8c3-e98b-44c6-a299-e861e6b6ca73

Startupmicrosoft.exe

TagInmaculada

LogDirLogs

SignaturecPwM51xFWgNtonbGsZjDNcc4QSqn3I1S0RD7ICGIyinqetB3B/gqlG/pPtLjzLuNEYINiHA1Z9JeSu4QlbCLbM9ml2peK+IC61q4+jOlnFnkm5aLsS2T3qK1QjNFNPw3jOutJtvweDeK6jii7pBzRfVQ4ka2krndcj5BLlbkwWMXdt3lbLpT+5ovcrL7ddymjrVVpn6hjME2UL0DrdN06S/23hXlq6JtzWZzQF9DZJjBXVueOwQ/zc4NuQ6CHemgz9kptHQyII0+osfCuD1GHjyWqPsERM1+JHxbAyeZ8hl5...

CertificateMIIE9DCCAtygAwIBAgIQAPSeG7ZtfLspW4/oC+ZdNzANBgkqhkiG9w0BAQ0FADAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMCAXDTI1MDUxMDAyMDAwN1oYDzk5OTkxMjMxMjM1OTU5WjAbMRkwFwYDVQQDDBBRdWFzYXIgU2VydmVyIENBMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAu4Tqm1grrPIYA2esha7GAWji9SpP2OAT/TOQn/i2kqTcPnlYIGypIHRNtP+vJfjrmJNuBxjr...

5800

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:

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

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Total events

1 100

Read events

1 100

Write events

0

Delete events

0

Modification events

No data

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Executable files

0

Suspicious files

0

Text files

0

Unknown types

0

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

5

TCP/UDP connections

23

DNS requests

17

Threats

0

HTTP requests

PID	Process	Method	HTTP Code	IP	URL	CN	Type	Size	Reputation
5496	MoUsoCoreWorker.exe	GET	200	2.16.164.120:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	unknown	—	—	whitelisted
5496	MoUsoCoreWorker.exe	GET	200	95.101.149.131:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	unknown	—	—	whitelisted
6544	svchost.exe	GET	200	2.23.77.188:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	unknown	—	—	whitelisted
4452	SIHClient.exe	GET	200	184.30.21.171:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl	unknown	—	—	whitelisted
4452	SIHClient.exe	GET	200	184.30.21.171:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.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	192.168.100.255:137	—	—	—	whitelisted
5496	MoUsoCoreWorker.exe	2.16.164.120:80	crl.microsoft.com	Akamai International B.V.	NL	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
5496	MoUsoCoreWorker.exe	95.101.149.131:80	www.microsoft.com	Akamai International B.V.	NL	whitelisted
3216	svchost.exe	172.211.123.250:443	client.wns.windows.com	MICROSOFT-CORP-MSN-AS-BLOCK	FR	whitelisted
6544	svchost.exe	20.190.159.73:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
6544	svchost.exe	2.23.77.188:80	ocsp.digicert.com	AKAMAI-AS	DE	whitelisted
2104	svchost.exe	4.231.128.59:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
4452	SIHClient.exe	172.202.163.200:443	slscr.update.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	GB	whitelisted

DNS requests

Domain	IP	Reputation
google.com	142.250.185.110	whitelisted
settings-win.data.microsoft.com	20.73.194.208 4.231.128.59	whitelisted
crl.microsoft.com	2.16.164.120 2.16.164.49	whitelisted
www.microsoft.com	95.101.149.131 184.30.21.171	whitelisted
client.wns.windows.com	172.211.123.250	whitelisted
login.live.com	20.190.159.73 20.190.159.0 20.190.159.23 40.126.31.129 20.190.159.2 20.190.159.4 20.190.159.131 40.126.31.69	whitelisted
ocsp.digicert.com	2.23.77.188	whitelisted
slscr.update.microsoft.com	172.202.163.200	whitelisted
fe3cr.delivery.mp.microsoft.com	20.242.39.171	whitelisted
activation-v2.sls.microsoft.com	40.91.76.224	whitelisted

Threats

No threats detected

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No debug info

General Info

microsoft.exe

8AEF914A8FD0118A50A99F630131396F

28DB1F3C8BA3D4F424FA7597B8D6C6EF964FF8B5

D981831BCBB85897CE3C2D2F997A9821EDA5328C1EF0E0F709A78E31ACBAA42E

49152:mPgGOhX02hD2nPiLq3A6770DODdl/rADxXhCk/3DgIP7RZq38A+xzK/g8Zzq7uoj:H2nP6q3A6770DODdl/rADxRLDgQ4U

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

QUASAR has been detected (YARA)

SUSPICIOUS

There is functionality for taking screenshot (YARA)

INFO

Checks supported languages

Reads the machine GUID from the registry

Reads Environment values

Reads the computer name

Reads the software policy settings

Checks proxy server information

Malware configuration

Quasar

Static information

TRiD

EXIF

EXE

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Modules

Information

Modules

Information

Modules

Malware configuration

Quasar

Information

Modules

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings