Malware analysis buildf9.exe.zip Malicious activity | ANY.RUN

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File name:	buildf9.exe.zip
Full analysis:	https://app.any.run/tasks/ace19800-f24c-4b7e-8b52-ab8ff6e462dc
Verdict:	Malicious activity
Analysis date:	November 06, 2024, 21:40:16
OS:	Windows 10 Professional (build: 19045, 64 bit)
Tags:	arch-exec
Indicators:
MIME:	application/zip
File info:	Zip archive data, at least v2.0 to extract, compression method=deflate
MD5:	CE85151F9EF1949A6C17B0A4943A04EC
SHA1:	26D43AC67A2833740E9D5DBBE25B0297A8F88772
SHA256:	D3B6D00AC1362151761D730EF0CF1DCE8C9553D185F30D48CAE4E0202D58E9DA
SSDEEP:	768:DDzLgATBTBZYe1FixqnGtN5dhUpF2eJqW6F6iQTFX:DDIATBTgZxPtN5dypQ2qWv9R

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:
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
- Generic archive extractor
  - WinRAR.exe (PID: 2576)
SUSPICIOUS
- Executing commands from ".cmd" file
  - buildf9.exe (PID: 2312)
  - buildf9.exe (PID: 3076)
- Starts CMD.EXE for commands execution
  - buildf9.exe (PID: 2312)
  - buildf9.exe (PID: 3076)
- Uses REG/REGEDIT.EXE to modify registry
  - cmd.exe (PID: 3964)
  - cmd.exe (PID: 6288)
INFO
- Executable content was dropped or overwritten
  - WinRAR.exe (PID: 2576)
- The process uses the downloaded file
  - WinRAR.exe (PID: 2576)
- Manual execution by a user
  - buildf9.exe (PID: 2312)
  - buildf9.exe (PID: 4040)
  - buildf9.exe (PID: 3076)

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

.zip	\|	ZIP compressed archive (100)

EXIF

ZIP

ZipRequiredVersion:	20
ZipBitFlag:	0x0009
ZipCompression:	Deflated
ZipModifyDate:	2024:11:06 20:46:42
ZipCRC:	0xfeb92588
ZipCompressedSize:	26886
ZipUncompressedSize:	54784
ZipFileName:	buildf9.exe

No data.

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All screenshots are available in the full report

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Total processes

151

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

1112

\??\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

2312

"C:\Users\admin\Desktop\buildf9.exe"

C:\Users\admin\Desktop\buildf9.exe

explorer.exe

User:

admin

Integrity Level:

HIGH

Exit code:

Modules

Images
c:\users\admin\desktop\buildf9.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\ole32.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\combase.dll

2576

"C:\Program Files\WinRAR\WinRAR.exe" C:\Users\admin\Desktop\buildf9.exe.zip

C:\Program Files\WinRAR\WinRAR.exe

explorer.exe

User:

admin

Company:

Alexander Roshal

Integrity Level:

MEDIUM

Description:

WinRAR archiver

Exit code:

Version:

5.91.0

Modules

Images
c:\program files\winrar\winrar.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

3076

"C:\Users\admin\Desktop\buildf9.exe"

C:\Users\admin\Desktop\buildf9.exe

explorer.exe

User:

admin

Integrity Level:

HIGH

Exit code:

Modules

Images
c:\users\admin\desktop\buildf9.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\ole32.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\combase.dll

3964

C:\WINDOWS\system32\cmd.exe /c ""C:\Users\admin\AppData\Local\Temp\4F5C.tmp\buildf9.cmd" "

C:\Windows\System32\cmd.exe

—

buildf9.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\cmdext.dll

4040

"C:\Users\admin\Desktop\buildf9.exe"

C:\Users\admin\Desktop\buildf9.exe

—

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

3221226540

Modules

Images
c:\users\admin\desktop\buildf9.exe
c:\windows\system32\ntdll.dll

6288

C:\WINDOWS\system32\cmd.exe /c ""C:\Users\admin\AppData\Local\Temp\3BCF.tmp\buildf9.cmd" "

C:\Windows\System32\cmd.exe

—

buildf9.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\cmdext.dll

6520

C:\WINDOWS\System32\rundll32.exe C:\WINDOWS\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding

C:\Windows\System32\rundll32.exe

—

svchost.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

6764

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:

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

6996

reg add "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce" /v "autobuildf9" /d "C:\WINDOWS\system32\buildf9.exe" /t REG_SZ /f

C:\Windows\System32\reg.exe

—

cmd.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

HIGH

Description:

Registry Console Tool

Exit code:

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\reg.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\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll

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Total events

3 423

Read events

3 388

Write events

Delete events

Modification events


(PID) Process:	(2576) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:	write	Name:	1
Value: C:\Users\admin\Desktop\GoogleChromeEnterpriseBundle64.zip
(PID) Process:	(2576) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:	write	Name:	0
Value: C:\Users\admin\Desktop\buildf9.exe.zip
(PID) Process:	(2576) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	name
Value: 120
(PID) Process:	(2576) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	size
Value: 80
(PID) Process:	(2576) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	type
Value: 120
(PID) Process:	(2576) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	mtime
Value: 100
(PID) Process:	(2576) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\DialogEditHistory\ExtrPath
Operation:	delete value	Name:	15
Value:
(PID) Process:	(2576) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\DialogEditHistory\ExtrPath
Operation:	delete value	Name:	14
Value:
(PID) Process:	(2576) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\DialogEditHistory\ExtrPath
Operation:	delete value	Name:	13
Value:
(PID) Process:	(2576) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\DialogEditHistory\ExtrPath
Operation:	delete value	Name:	12
Value:

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
2312	buildf9.exe	C:\Users\admin\AppData\Local\Temp\4F5C.tmp\buildf9.cmd		text
		MD5:DD054A5F88DA021539F34059E183E5BA	SHA256:E5042B2CFE1186255E3D3E801344D8BD4390FF8CF98B296D6056DBEB5AC7569A
2576	WinRAR.exe	C:\Users\admin\Desktop\buildf9.exe		executable
		MD5:0EC0FC031E335042F0915DF106C802DF	SHA256:29CDEF58AC5379719D728BD4BD65D3E32BA7D0333AAE553D1E98247C5A9A1683
3076	buildf9.exe	C:\Users\admin\AppData\Local\Temp\3BCF.tmp\buildf9.cmd		text
		MD5:DD054A5F88DA021539F34059E183E5BA	SHA256:E5042B2CFE1186255E3D3E801344D8BD4390FF8CF98B296D6056DBEB5AC7569A

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
4360	SearchApp.exe	GET	200	192.229.221.95:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D	unknown	—	—	whitelisted
5488	MoUsoCoreWorker.exe	GET	200	23.48.23.162:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	unknown	—	—	whitelisted
5488	MoUsoCoreWorker.exe	GET	200	184.30.21.171:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	unknown	—	—	whitelisted
6684	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
6684	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
2708	backgroundTaskHost.exe	GET	200	192.229.221.95:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%3D	unknown	—	—	whitelisted
4700	svchost.exe	GET	200	192.229.221.95:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	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
6944	svchost.exe	20.73.194.208:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
5488	MoUsoCoreWorker.exe	20.73.194.208:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
3524	RUXIMICS.exe	20.73.194.208:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
4360	SearchApp.exe	104.126.37.171:443	www.bing.com	Akamai International B.V.	DE	whitelisted
4360	SearchApp.exe	192.229.221.95:80	ocsp.digicert.com	EDGECAST	US	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
4700	svchost.exe	40.126.32.74:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
4700	svchost.exe	192.229.221.95:80	ocsp.digicert.com	EDGECAST	US	whitelisted
4360	SearchApp.exe	104.126.37.155:443	www.bing.com	Akamai International B.V.	DE	whitelisted

DNS requests

Domain	IP	Reputation
settings-win.data.microsoft.com	20.73.194.208 4.231.128.59 51.104.136.2	whitelisted
www.bing.com	104.126.37.171 104.126.37.160 104.126.37.155 104.126.37.170 104.126.37.130 104.126.37.184 104.126.37.153 104.126.37.131 104.126.37.139	whitelisted
ocsp.digicert.com	192.229.221.95	whitelisted
google.com	142.250.181.238	whitelisted
login.live.com	40.126.32.74 40.126.32.134 40.126.32.138 20.190.160.14 40.126.32.140 40.126.32.72 40.126.32.136 40.126.32.76	whitelisted
th.bing.com	104.126.37.155 104.126.37.160 104.126.37.131 104.126.37.170 104.126.37.153 104.126.37.139 104.126.37.130 104.126.37.184 104.126.37.171	whitelisted
go.microsoft.com	23.213.166.81	whitelisted
crl.microsoft.com	23.48.23.162 23.48.23.159 23.48.23.178 23.48.23.150 23.48.23.161 23.48.23.177 23.48.23.158 23.48.23.176 23.48.23.181	whitelisted
www.microsoft.com	184.30.21.171	whitelisted
arc.msn.com	20.223.35.26	whitelisted

Threats

No threats detected

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No debug info

General Info

buildf9.exe.zip

CE85151F9EF1949A6C17B0A4943A04EC

26D43AC67A2833740E9D5DBBE25B0297A8F88772

D3B6D00AC1362151761D730EF0CF1DCE8C9553D185F30D48CAE4E0202D58E9DA

768:DDzLgATBTBZYe1FixqnGtN5dhUpF2eJqW6F6iQTFX:DDIATBTgZxPtN5dypQ2qWv9R

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Generic archive extractor

SUSPICIOUS

Executing commands from ".cmd" file

Starts CMD.EXE for commands execution

Uses REG/REGEDIT.EXE to modify registry

INFO

Executable content was dropped or overwritten

The process uses the downloaded file

Manual execution by a user

Malware configuration

Static information

TRiD

EXIF

ZIP

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

Information

Modules

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings