Malware analysis Stub.exe Malicious activity | ANY.RUN

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File name:	Stub.exe
Full analysis:	https://app.any.run/tasks/bce28860-00e4-4988-9523-7c3499415b38
Verdict:	Malicious activity
Analysis date:	August 29, 2024, 16:43:25
OS:	Windows 10 Professional (build: 19045, 64 bit)
Tags:	netreactor
Indicators:
MIME:	application/x-dosexec
File info:	PE32 executable (GUI) Intel 80386, for MS Windows
MD5:	3695B9EDF0BD656886234FC8B27381A1
SHA1:	524941AFA72BB3B6B3A1A8CF559AEA76DC3D2ED1
SHA256:	FC54A3CA1E2F6F983B918B037808D3FDF6753B7114922896C9864342ECB24794
SSDEEP:	98304:wQpA0weYarruWcxkkPt/6D7FQLnVkUyTIa5vFpzjIoIsI70Vdg6gFB0oxnnGC561:VeFK

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:
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
No malicious indicators.
SUSPICIOUS
- Process drops legitimate windows executable
  - Stub.exe (PID: 3784)
- Drops the executable file immediately after the start
  - Stub.exe (PID: 3784)
- Executable content was dropped or overwritten
  - Stub.exe (PID: 3784)
- Reads security settings of Internet Explorer
  - UnifiedStub-installer.exe (PID: 4444)
INFO
- Create files in a temporary directory
  - Stub.exe (PID: 3784)
- Reads the machine GUID from the registry
  - UnifiedStub-installer.exe (PID: 4444)
- Checks supported languages
  - Stub.exe (PID: 3784)
  - UnifiedStub-installer.exe (PID: 4444)
- Reads the computer name
  - UnifiedStub-installer.exe (PID: 4444)
- Reads Environment values
  - UnifiedStub-installer.exe (PID: 4444)
- Disables trace logs
  - UnifiedStub-installer.exe (PID: 4444)
- Checks proxy server information
  - UnifiedStub-installer.exe (PID: 4444)
- Reads the software policy settings
  - UnifiedStub-installer.exe (PID: 4444)
- .NET Reactor protector has been detected
  - UnifiedStub-installer.exe (PID: 4444)

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) (76.4)
.exe	\|	Win32 Executable (generic) (12.4)
.exe	\|	Generic Win/DOS Executable (5.5)
.exe	\|	DOS Executable Generic (5.5)

EXIF

EXE

MachineType:	Intel 386 or later, and compatibles
TimeStamp:	2023:06:20 08:00:00+00:00
ImageFileCharacteristics:	No relocs, Executable, No line numbers, No symbols, Large address aware, 32-bit
PEType:	PE32
LinkerVersion:	6
CodeSize:	106496
InitializedDataSize:	492032
UninitializedDataSize:	-
EntryPoint:	0x19b6c
OSVersion:	4
ImageVersion:	-
SubsystemVersion:	4
Subsystem:	Windows GUI
FileVersionNumber:	6.0.6.0
ProductVersionNumber:	6.0.6.0
FileFlagsMask:	0x003f
FileFlags:	(none)
FileOS:	Windows NT 32-bit
ObjectFileType:	Executable application
FileSubtype:	-
LanguageCode:	English (U.S.)
CharacterSet:	Unicode
CompanyName:	ReasonLabs
FileDescription:	ReasonLabs-setup-wizard.exe
FileVersion:	6.0.6
InternalName:	7zS.sfx
LegalCopyright:	Copyright (C) 2024 Reason Software Company Inc.
OriginalFileName:	7zS.sfx.exe
ProductName:	ReasonLabs Setup Wizard
ProductVersion:	6.0.6

No data.

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All screenshots are available in the full report

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Total processes

127

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

2024

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

2136

"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

3784

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

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

explorer.exe

User:

admin

Company:

ReasonLabs

Integrity Level:

HIGH

Description:

ReasonLabs-setup-wizard.exe

Version:

6.0.6

Modules

Images
c:\users\admin\appdata\local\temp\stub.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\oleaut32.dll

4444

.\UnifiedStub-installer.exe

C:\Users\admin\AppData\Local\Temp\7zS8CE212D2\UnifiedStub-installer.exe

Stub.exe

User:

admin

Company:

Reason Software Company Inc.

Integrity Level:

HIGH

Description:

UnifiedStub

Version:

6.0.6

Modules

Images
c:\users\admin\appdata\local\temp\7zs8ce212d2\unifiedstub-installer.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

6176

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

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

—

explorer.exe

User:

admin

Company:

ReasonLabs

Integrity Level:

MEDIUM

Description:

ReasonLabs-setup-wizard.exe

Exit code:

3221226540

Version:

6.0.6

Modules

Images
c:\users\admin\appdata\local\temp\stub.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll

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Total events

1 990

Read events

1 976

Write events

Delete events

Modification events


(PID) Process:	(4444) UnifiedStub-installer.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\UnifiedStub-installer_RASAPI32
Operation:	write	Name:	EnableFileTracing
Value: 0
(PID) Process:	(4444) UnifiedStub-installer.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\UnifiedStub-installer_RASAPI32
Operation:	write	Name:	EnableAutoFileTracing
Value: 0
(PID) Process:	(4444) UnifiedStub-installer.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\UnifiedStub-installer_RASAPI32
Operation:	write	Name:	EnableConsoleTracing
Value: 0
(PID) Process:	(4444) UnifiedStub-installer.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\UnifiedStub-installer_RASAPI32
Operation:	write	Name:	FileTracingMask
Value:
(PID) Process:	(4444) UnifiedStub-installer.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\UnifiedStub-installer_RASAPI32
Operation:	write	Name:	ConsoleTracingMask
Value:
(PID) Process:	(4444) UnifiedStub-installer.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\UnifiedStub-installer_RASAPI32
Operation:	write	Name:	MaxFileSize
Value: 1048576
(PID) Process:	(4444) UnifiedStub-installer.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\UnifiedStub-installer_RASAPI32
Operation:	write	Name:	FileDirectory
Value: %windir%\tracing
(PID) Process:	(4444) UnifiedStub-installer.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\UnifiedStub-installer_RASMANCS
Operation:	write	Name:	EnableFileTracing
Value: 0
(PID) Process:	(4444) UnifiedStub-installer.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\UnifiedStub-installer_RASMANCS
Operation:	write	Name:	EnableAutoFileTracing
Value: 0
(PID) Process:	(4444) UnifiedStub-installer.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Tracing\UnifiedStub-installer_RASMANCS
Operation:	write	Name:	EnableConsoleTracing
Value: 0

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
3784	Stub.exe	C:\Users\admin\AppData\Local\Temp\7zS8CE212D2\ARM64\Reason.ArchiveUtility-ARM64.dll		executable
		MD5:084B3EBB27DA692C90CCC83A765E8B2E	SHA256:DBB2C00B06B818D5DA88954EDDD9C7B8911A748B1E8C853B9DA7FAAACDBE536D
3784	Stub.exe	C:\Users\admin\AppData\Local\Temp\7zS8CE212D2\de\Microsoft.Win32.TaskScheduler.resources.dll		executable
		MD5:F83D720B236576C7D1F9F55D3BB988F9	SHA256:6909A1C134D0285FBA2422A40EA0E65C1F0CA3C3EF2B94A1166015AF2A87780F
3784	Stub.exe	C:\Users\admin\AppData\Local\Temp\7zS8CE212D2\el-GR\UnifiedStub.resources.dll		executable
		MD5:41153F9DF6CD4962556F6C29C44F6005	SHA256:D5C842BBA00EE1B8670C5C29546F433E19787A1A64EB9383D918039557ED5751
3784	Stub.exe	C:\Users\admin\AppData\Local\Temp\7zS8CE212D2\da-DK\UnifiedStub.resources.dll		executable
		MD5:C7D53FBA41BBD98B09ADC6370530187D	SHA256:0973897156246245DAFC537D4023FD899E29F65F9AFCCC0049F41BC08138F5F5
3784	Stub.exe	C:\Users\admin\AppData\Local\Temp\7zS8CE212D2\fr\Microsoft.Win32.TaskScheduler.resources.dll		executable
		MD5:3B4621370ADDCF4306669C9E7E45C865	SHA256:E3EE50E08124A7603BE7D996DCF596EB0D3F9C603768E86E003F7B942D7097F3
3784	Stub.exe	C:\Users\admin\AppData\Local\Temp\7zS8CE212D2\de-DE\UnifiedStub.resources.dll		executable
		MD5:2157C628AB1269DBEBF9DB38F9F5DC9A	SHA256:6B6EB8B9BA257C7AD0A708D3C90737DA456003F4313580D91EA9F6F054E96A15
3784	Stub.exe	C:\Users\admin\AppData\Local\Temp\7zS8CE212D2\fi-FI\UnifiedStub.resources.dll		executable
		MD5:156BBCB21840D19FB90DDAB9210293AE	SHA256:F4EA93584B3B9EE0132AD808B09A68076BA3C7067812FDED553BB3CC353FBC35
3784	Stub.exe	C:\Users\admin\AppData\Local\Temp\7zS8CE212D2\cs-CZ\UnifiedStub.resources.dll		executable
		MD5:F230C03FC14C59760D29F3364A43581F	SHA256:7DFB9CD2FA7AB935F6DCFABEB2F65CD1E3CB30BF0A4E0B8F6CC878F05147FDBC
3784	Stub.exe	C:\Users\admin\AppData\Local\Temp\7zS8CE212D2\ja-JP\UnifiedStub.resources.dll		executable
		MD5:1383AD9188B59F954393713319DF301A	SHA256:17FFBD582826AA3171D654827FF92D0C79218AF48414AA0ABE72E4AA3FEF17E3
3784	Stub.exe	C:\Users\admin\AppData\Local\Temp\7zS8CE212D2\it\Microsoft.Win32.TaskScheduler.resources.dll		executable
		MD5:1C331DA4BCE2809E16913C02E385576E	SHA256:1D0493E38D8B3FCC7EFA4916FEA1EEA69EE6449BF435E1869C1BC3F54D4090C5

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
2720	svchost.exe	GET	200	192.229.221.95:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	unknown	—	—	whitelisted
3660	SIHClient.exe	GET	200	23.218.209.163:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl	unknown	—	—	whitelisted
3660	SIHClient.exe	GET	200	23.218.209.163:80	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
4	System	192.168.100.255:138	—	—	—	whitelisted
2400	svchost.exe	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
2120	MoUsoCoreWorker.exe	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
—	—	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
3260	svchost.exe	40.113.103.199:443	client.wns.windows.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
4444	UnifiedStub-installer.exe	23.20.124.162:443	track.analytics-data.io	AMAZON-AES	US	malicious
2720	svchost.exe	40.126.31.73:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
2720	svchost.exe	192.229.221.95:80	ocsp.digicert.com	EDGECAST	US	whitelisted
2400	svchost.exe	20.73.194.208:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
2120	MoUsoCoreWorker.exe	20.73.194.208:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted

DNS requests

Domain	IP	Reputation
settings-win.data.microsoft.com	51.104.136.2 20.73.194.208	whitelisted
google.com	142.250.184.206	whitelisted
client.wns.windows.com	40.113.103.199	whitelisted
track.analytics-data.io	23.20.124.162 54.90.250.141 52.200.141.143	malicious
login.live.com	40.126.31.73 20.190.159.75 20.190.159.23 20.190.159.68 20.190.159.0 40.126.31.69 20.190.159.71 40.126.31.71	whitelisted
ocsp.digicert.com	192.229.221.95	whitelisted
slscr.update.microsoft.com	20.114.59.183	whitelisted
www.microsoft.com	23.218.209.163	whitelisted
fe3cr.delivery.mp.microsoft.com	13.95.31.18	whitelisted

Threats

No threats detected

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No debug info

General Info

Stub.exe

3695B9EDF0BD656886234FC8B27381A1

524941AFA72BB3B6B3A1A8CF559AEA76DC3D2ED1

FC54A3CA1E2F6F983B918B037808D3FDF6753B7114922896C9864342ECB24794

98304:wQpA0weYarruWcxkkPt/6D7FQLnVkUyTIa5vFpzjIoIsI70Vdg6gFB0oxnnGC561:VeFK

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

SUSPICIOUS

Process drops legitimate windows executable

Drops the executable file immediately after the start

Executable content was dropped or overwritten

Reads security settings of Internet Explorer

INFO

Create files in a temporary directory

Reads the machine GUID from the registry

Checks supported languages

Reads the computer name

Reads Environment values

Disables trace logs

Checks proxy server information

Reads the software policy settings

.NET Reactor protector has been detected

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