Malware analysis MBR.exe Malicious activity | ANY.RUN

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File name:	MBR.exe
Full analysis:	https://app.any.run/tasks/67a8805b-bd6a-4ae3-92a0-32fb6a3ccc5e
Verdict:	Malicious activity
Analysis date:	May 08, 2025, 21:46:52
OS:	Windows 10 Professional (build: 19044, 64 bit)
Tags:	python pyinstaller
Indicators:
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32+ executable (GUI) x86-64, for MS Windows, 6 sections
MD5:	5BDD45711A7CE8C011868C2808B8ED6A
SHA1:	04A697DBF4552005515996CBDD6CCD66D9B74884
SHA256:	2517F29CEFD8BE982BA6DA58757B3D82F157D834E08C2401829151DF3C61427C
SSDEEP:	98304:m6CqN6LFA9Sor3UFML7ndwwvYUAxi9N8bcx2THsiAU9NPPW9OPLTdTIQZ9dkEfB1:fz1k7ZpeRPAoFTy6wnG/t

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
- Adds extension to the Windows Defender exclusion list
  - MBR.exe (PID: 4988)
  - cmd.exe (PID: 4120)
- Changes Windows Defender settings
  - cmd.exe (PID: 4120)
SUSPICIOUS
- The process drops C-runtime libraries
  - MBR.exe (PID: 6184)
- Process drops legitimate windows executable
  - MBR.exe (PID: 6184)
- Process drops python dynamic module
  - MBR.exe (PID: 6184)
- Executable content was dropped or overwritten
  - MBR.exe (PID: 6184)
- Application launched itself
  - MBR.exe (PID: 6184)
- Script adds exclusion extension to Windows Defender
  - cmd.exe (PID: 4120)
- There is functionality for taking screenshot (YARA)
  - MBR.exe (PID: 6184)
  - MBR.exe (PID: 4988)
- Loads Python modules
  - MBR.exe (PID: 4988)
- Starts CMD.EXE for commands execution
  - MBR.exe (PID: 4988)
- Starts POWERSHELL.EXE for commands execution
  - cmd.exe (PID: 4120)
INFO
- Checks supported languages
  - MBR.exe (PID: 6184)
  - MBR.exe (PID: 4988)
- Reads the computer name
  - MBR.exe (PID: 6184)
- Create files in a temporary directory
  - MBR.exe (PID: 6184)
- The sample compiled with english language support
  - MBR.exe (PID: 6184)
- Checks if a key exists in the options dictionary (POWERSHELL)
  - powershell.exe (PID: 4408)
- PyInstaller has been detected (YARA)
  - MBR.exe (PID: 6184)
  - MBR.exe (PID: 4988)
- Checks proxy server information
  - slui.exe (PID: 3240)
- Reads the software policy settings
  - slui.exe (PID: 3240)
- Script raised an exception (POWERSHELL)
  - powershell.exe (PID: 4408)

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:	2024:10:20 01:33:51+00:00
ImageFileCharacteristics:	Executable, Large address aware
PEType:	PE32+
LinkerVersion:	14.41
CodeSize:	172032
InitializedDataSize:	95744
UninitializedDataSize:	-
EntryPoint:	0xcdb0
OSVersion:	6
ImageVersion:	-
SubsystemVersion:	6
Subsystem:	Windows GUI

No data.

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All screenshots are available in the full report

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Total processes

141

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

3240

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

4120

C:\WINDOWS\system32\cmd.exe /c Powershell -Command "Set-MpPreference -ExclusionExtension exe"

C:\Windows\System32\cmd.exe

—

MBR.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

HIGH

Description:

Windows Command Processor

Exit code:

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\cmd.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\sechost.dll

4408

Powershell -Command "Set-MpPreference -ExclusionExtension exe"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

—

cmd.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

HIGH

Description:

Windows PowerShell

Exit code:

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\windowspowershell\v1.0\powershell.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\oleaut32.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\combase.dll

4652

"C:\Users\admin\Desktop\MBR.exe"

C:\Users\admin\Desktop\MBR.exe

—

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

3221226540

Modules

Images
c:\users\admin\desktop\mbr.exe
c:\windows\system32\ntdll.dll

4988

"C:\Users\admin\Desktop\MBR.exe"

C:\Users\admin\Desktop\MBR.exe

—

MBR.exe

User:

admin

Integrity Level:

HIGH

Exit code:

1073807364

Modules

Images
c:\users\admin\desktop\mbr.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.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

6184

"C:\Users\admin\Desktop\MBR.exe"

C:\Users\admin\Desktop\MBR.exe

explorer.exe

User:

admin

Integrity Level:

HIGH

Exit code:

1073807364

Modules

Images
c:\users\admin\desktop\mbr.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.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

6744

\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1

C:\Windows\System32\conhost.exe

—

cmd.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

HIGH

Description:

Console Window Host

Exit code:

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

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

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Total events

5 852

Read events

5 852

Write events

Delete events

Modification events

No data

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
6184	MBR.exe	C:\Users\admin\AppData\Local\Temp\_MEI61842\VCRUNTIME140.dll		executable
		MD5:862F820C3251E4CA6FC0AC00E4092239	SHA256:36585912E5EAF83BA9FEA0631534F690CCDC2D7BA91537166FE53E56C221E153
4408	powershell.exe	C:\Users\admin\AppData\Local\Temp\__PSScriptPolicyTest_nctfdp1q.vq4.psm1		text
		MD5:D17FE0A3F47BE24A6453E9EF58C94641	SHA256:96AD1146EB96877EAB5942AE0736B82D8B5E2039A80D3D6932665C1A4C87DCF7
6184	MBR.exe	C:\Users\admin\AppData\Local\Temp\_MEI61842\python313.dll		executable
		MD5:B9DE917B925DD246B709BB4233777EFD	SHA256:0C0A66505093B6A4BB3475F716BD3D9552095776F6A124709C13B3F9552C7D99
6184	MBR.exe	C:\Users\admin\AppData\Local\Temp\_MEI61842\unicodedata.pyd		executable
		MD5:0902D299A2A487A7B0C2D75862B13640	SHA256:2693C7EE4FBA55DC548F641C0CB94485D0E18596FFEF16541BD43A5104C28B20
6184	MBR.exe	C:\Users\admin\AppData\Local\Temp\_MEI61842\_socket.pyd		executable
		MD5:FE896371430BD9551717EF12A3E7E818	SHA256:35246B04C6C7001CA448554246445A845CE116814A29B18B617EA38752E4659B
6184	MBR.exe	C:\Users\admin\AppData\Local\Temp\_MEI61842\base_library.zip		compressed
		MD5:A9CBD0455B46C7D14194D1F18CA8719E	SHA256:DF6C19637D239BFEDC8CD13D20E0938C65E8FDF340622FF334DB533F2D30FA19
6184	MBR.exe	C:\Users\admin\AppData\Local\Temp\_MEI61842\select.pyd		executable
		MD5:20831703486869B470006941B4D996F2	SHA256:78E5994C29D8851F28B5B12D59D742D876683AEA58ECEEA1FB895B2036CDCDEB
6184	MBR.exe	C:\Users\admin\AppData\Local\Temp\_MEI61842\_lzma.pyd		executable
		MD5:1BA022D42024A655CF289544AE461FB8	SHA256:D080EABD015A3569813A220FD4EA74DFF34ED2A8519A10473EB37E22B1118A06
6184	MBR.exe	C:\Users\admin\AppData\Local\Temp\_MEI61842\_hashlib.pyd		executable
		MD5:32D76C9ABD65A5D2671AEEDE189BC290	SHA256:838D5C8B7C3212C8429BAF612623ABBBC20A9023EEC41E34E5461B76A285B86C
6184	MBR.exe	C:\Users\admin\AppData\Local\Temp\_MEI61842\_decimal.pyd		executable
		MD5:F3377F3DE29579140E2BBAEEFD334D4F	SHA256:B715D1C18E9A9C1531F21C02003B4C6726742D1A2441A1893BC3D79D7BB50E91

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
—	—	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	2.17.190.73:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	unknown	—	—	whitelisted
—	—	GET	200	2.16.164.49:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	unknown	—	—	whitelisted
1764	SIHClient.exe	GET	200	2.23.246.101:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl	unknown	—	—	whitelisted
1764	SIHClient.exe	GET	200	2.23.246.101:80	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	192.168.100.255:137	—	—	—	whitelisted
2104	svchost.exe	4.231.128.59:443	—	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
—	—	4.231.128.59:443	—	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
—	—	2.16.164.49:80	crl.microsoft.com	Akamai International B.V.	NL	whitelisted
—	—	95.101.149.131:80	www.microsoft.com	Akamai International B.V.	NL	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
2112	svchost.exe	4.231.128.59:443	—	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
3216	svchost.exe	172.211.123.250:443	client.wns.windows.com	MICROSOFT-CORP-MSN-AS-BLOCK	FR	whitelisted
6544	svchost.exe	40.126.32.134:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
6544	svchost.exe	2.17.190.73:80	ocsp.digicert.com	AKAMAI-AS	DE	whitelisted

DNS requests

Domain	IP	Reputation
crl.microsoft.com	2.16.164.49 2.16.164.120	whitelisted
www.microsoft.com	95.101.149.131 2.23.246.101	whitelisted
google.com	142.250.184.206	whitelisted
client.wns.windows.com	172.211.123.250	whitelisted
login.live.com	40.126.32.134 20.190.160.66 40.126.32.140 20.190.160.2 20.190.160.132 20.190.160.131 40.126.32.136 20.190.160.4	whitelisted
ocsp.digicert.com	2.17.190.73	whitelisted
settings-win.data.microsoft.com	20.73.194.208	whitelisted
slscr.update.microsoft.com	4.245.163.56	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

MBR.exe

5BDD45711A7CE8C011868C2808B8ED6A

04A697DBF4552005515996CBDD6CCD66D9B74884

2517F29CEFD8BE982BA6DA58757B3D82F157D834E08C2401829151DF3C61427C

98304:m6CqN6LFA9Sor3UFML7ndwwvYUAxi9N8bcx2THsiAU9NPPW9OPLTdTIQZ9dkEfB1:fz1k7ZpeRPAoFTy6wnG/t

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Adds extension to the Windows Defender exclusion list

Changes Windows Defender settings

SUSPICIOUS

The process drops C-runtime libraries

Process drops legitimate windows executable

Process drops python dynamic module

Executable content was dropped or overwritten

Application launched itself

Script adds exclusion extension to Windows Defender

There is functionality for taking screenshot (YARA)

Loads Python modules

Starts CMD.EXE for commands execution

Starts POWERSHELL.EXE for commands execution

INFO

Checks supported languages

Reads the computer name

Create files in a temporary directory

The sample compiled with english language support

Checks if a key exists in the options dictionary (POWERSHELL)

PyInstaller has been detected (YARA)

Checks proxy server information

Reads the software policy settings

Script raised an exception (POWERSHELL)

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

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings