Malware analysis VB.Decompiler.v11.5_PatchFile_GautamGreat.rar Malicious activity

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File name:	VB.Decompiler.v11.5_PatchFile_GautamGreat.rar
Full analysis:	https://app.any.run/tasks/46ea0eae-0ace-4606-9020-f458563161bb
Verdict:	Malicious activity
Analysis date:	December 19, 2025, 22:10:02
OS:	Windows 10 Professional (build: 19044, 64 bit)
Tags:	arch-exec
MIME:	application/x-rar
File info:	RAR archive data, v5
MD5:	79A092E7534754AA5DD3DAAB77031FAD
SHA1:	5D9CD38E5BA040E204F784EC024510402F8A9070
SHA256:	C661BF321B0E3206E839ABA5E07A98A5B4894FCC00EBCB88BB05DD5BCD697DFC
SSDEEP:	98304:5WcnJQ6wNUMvLNvD38ouiU1qMpI65UicdTjXirFYPKk4DX7OxABDTBDmaxnoX5Br:XqPM/apvEOKfW7omgmGq

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:: off
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)
Google Chrome (133.0.6943.127)
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 (133.0.3065.92)
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) (136.0)
Mozilla Maintenance Service (136.0)
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)
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
- Executing a file with an untrusted certificate
  - VB Decompiler.exe (PID: 7848)
  - VB Decompiler.exe (PID: 7244)
SUSPICIOUS
No suspicious indicators.
INFO
- The sample compiled with english language support
  - WinRAR.exe (PID: 7544)
- Checks supported languages
  - VB Decompiler.exe (PID: 7848)
  - TextInputHost.exe (PID: 7968)
  - VB Decompiler.exe (PID: 7244)
- Executable content was dropped or overwritten
  - WinRAR.exe (PID: 7544)
- Manual execution by a user
  - VB Decompiler.exe (PID: 7848)
  - VB Decompiler.exe (PID: 7244)
- Reads the computer name
  - VB Decompiler.exe (PID: 7848)
  - TextInputHost.exe (PID: 7968)
  - VB Decompiler.exe (PID: 7244)

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

.rar	\|	RAR compressed archive (v5.0) (61.5)
.rar	\|	RAR compressed archive (gen) (38.4)

EXIF

ZIP

FileVersion:	RAR v5
CompressedSize:	15115722
UncompressedSize:	15201168
OperatingSystem:	Win32
ArchivedFileName:	VB Decompiler.exe

No data.

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All screenshots are available in the full report

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Total processes

146

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

4020

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

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

7244

"C:\Users\admin\Desktop\VB Decompiler.exe"

C:\Users\admin\Desktop\VB Decompiler.exe

—

explorer.exe

User:

admin

Company:

DotFix Software

Integrity Level:

MEDIUM

Description:

Decompiler for p-code and native code files

Version:

11.5.0.0

Modules

Images
c:\users\admin\desktop\vb decompiler.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\user32.dll
c:\windows\syswow64\win32u.dll

7544

"C:\Program Files\WinRAR\WinRAR.exe" C:\Users\admin\AppData\Local\Temp\VB.Decompiler.v11.5_PatchFile_GautamGreat.rar

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

7848

"C:\Users\admin\Desktop\VB Decompiler.exe"

C:\Users\admin\Desktop\VB Decompiler.exe

explorer.exe

User:

admin

Company:

DotFix Software

Integrity Level:

MEDIUM

Description:

Decompiler for p-code and native code files

Exit code:

122613094

Version:

11.5.0.0

Modules

Images
c:\users\admin\desktop\vb decompiler.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\user32.dll

7968

"C:\WINDOWS\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe" -ServerName:InputApp.AppXjd5de1g66v206tj52m9d0dtpppx4cgpn.mca

C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TextInputHost.exe

—

svchost.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Version:

123.26505.0.0

Modules

Images
c:\windows\systemapps\microsoftwindows.client.cbs_cw5n1h2txyewy\textinputhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\systemapps\microsoftwindows.client.cbs_cw5n1h2txyewy\vcruntime140_app.dll
c:\windows\system32\kernel.appcore.dll
c:\windows\system32\msvcrt.dll

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Total events

2 636

Read events

2 618

Write events

Delete events

Modification events


(PID) Process:	(7544) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:	write	Name:	3
Value: C:\Users\admin\Desktop\preferences.zip
(PID) Process:	(7544) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:	write	Name:	2
Value: C:\Users\admin\Desktop\chromium_ext.zip
(PID) Process:	(7544) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:	write	Name:	1
Value: C:\Users\admin\Desktop\omni_23_10_2024_.zip
(PID) Process:	(7544) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:	write	Name:	0
Value: C:\Users\admin\AppData\Local\Temp\VB.Decompiler.v11.5_PatchFile_GautamGreat.rar
(PID) Process:	(7544) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	name
Value: 120
(PID) Process:	(7544) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	size
Value: 80
(PID) Process:	(7544) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	type
Value: 120
(PID) Process:	(7544) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	mtime
Value: 100
(PID) Process:	(7544) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\Interface\MainWin
Operation:	write	Name:	Placement
Value: 2C0000000000000001000000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF3D0000002D000000FD03000016020000
(PID) Process:	(7544) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\ArcColumnWidths
Operation:	write	Name:	name
Value: 256

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
7544	WinRAR.exe	C:\Users\admin\AppData\Local\Temp\Rar$DRa7544.35132\VB Decompiler.exe		executable
		MD5:61882C888AD10F39E5ECC5EB67EAA57A	SHA256:F3785984B2CD7DD1BEB1A2CD126163CD70A0EA3C10F328AA4FEA50D2F6C4A22D

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
6768	MoUsoCoreWorker.exe	GET	304	40.127.240.158:443	https://settings-win.data.microsoft.com/settings/v3.0/OneSettings/Client?OSVersionFull=10.0.19045.4046.amd64fre.vb_release.191206-1406&LocalDeviceID=s%3ABAD99146-31D3-4EC6-A1A4-BE76F32BA5D4&FlightRing=Retail&AttrDataVer=186&OSUILocale=en-US&OSSkuId=48&App=WOSC&AppVer=&IsFlightingEnabled=0&TelemetryLevel=1&DeviceFamily=Windows.Desktop	US	—	—	whitelisted
6768	MoUsoCoreWorker.exe	GET	304	40.127.240.158:443	https://settings-win.data.microsoft.com/settings/v3.0/wsd/muse?ProcessorClockSpeed=3094&FlightIds=&UpdateOfferedDays=4294967295&BranchReadinessLevel=CB&OEMManufacturerName=DELL&IsCloudDomainJoined=0&ProcessorIdentifier=AMD64%20Family%2023%20Model%201%20Stepping%202&sku=48&ActivationChannel=Retail&AttrDataVer=186&IsMDMEnrolled=0&ProcessorCores=6&ProcessorModel=AMD%20Ryzen%205%203500%206-Core%20Processor&TotalPhysicalRAM=6144&PrimaryDiskType=4294967295&FlightingBranchName=&ChassisTypeId=1&OEMModelNumber=DELL&SystemVolumeTotalCapacity=260281&sampleId=95271487&deviceClass=Windows.Desktop&App=muse&DisableDualScan=0&AppVer=10.0&OEMSubModel=J5CR&locale=en-US&IsAlwaysOnAlwaysConnectedCapable=0&ms=0&DefaultUserRegion=244&UpdateServiceUrl=http%3A%2F%2Fneverupdatewindows10.com&osVer=10.0.19045.4046.amd64fre.vb_release.191206-1406&os=windows&deviceId=s%3ABAD99146-31D3-4EC6-A1A4-BE76F32BA5D4&DeferQualityUpdatePeriodInDays=0&ring=Retail&DeferFeatureUpdatePeriodInDays=30	US	—	—	whitelisted
6892	svchost.exe	GET	200	88.221.169.152:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	US	binary	814 b	whitelisted
7848	VB Decompiler.exe	POST	—	5.187.2.111:80	http://customers.dotfixsoft.com/remote	ES	—	—	unknown
5788	SIHClient.exe	GET	200	20.3.187.198:443	https://fe3cr.delivery.mp.microsoft.com/clientwebservice/ping	US	—	—	whitelisted
5788	SIHClient.exe	GET	200	135.233.95.144:443	https://slscr.update.microsoft.com/sls/ping	US	—	—	whitelisted
5788	SIHClient.exe	GET	304	135.233.95.144:443	https://slscr.update.microsoft.com/SLS/%7BE7A50285-D08D-499D-9FF8-180FDC2332BC%7D/x64/10.0.19045.4046/0?CH=686&L=en-US&P=&PT=0x30&WUA=10.0.19041.3996&MK=DELL&MD=DELL	US	—	—	whitelisted
7848	VB Decompiler.exe	POST	—	5.187.2.111:80	http://customers.dotfixsoft.com/remote	ES	—	—	unknown
2212	svchost.exe	POST	200	40.126.31.0:443	https://login.live.com/RST2.srf	US	xml	11.0 Kb	whitelisted
2212	svchost.exe	GET	200	184.30.131.245:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	US	binary	471 b	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	—	Not routed	—	whitelisted
6892	svchost.exe	4.231.128.59:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	US	whitelisted
6768	MoUsoCoreWorker.exe	4.231.128.59:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	US	whitelisted
6296	RUXIMICS.exe	4.231.128.59:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	US	whitelisted
4	System	192.168.100.255:138	—	Not routed	—	whitelisted
6892	svchost.exe	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	US	whitelisted
6892	svchost.exe	184.24.77.11:80	crl.microsoft.com	AKAMAI-ASN1	NL	whitelisted
6892	svchost.exe	88.221.169.152:80	www.microsoft.com	AKAMAI-AS	US	whitelisted
7848	VB Decompiler.exe	5.187.2.111:80	customers.dotfixsoft.com	FORNEX-AS	ES	unknown
3412	svchost.exe	172.211.123.249:443	client.wns.windows.com	MICROSOFT-CORP-MSN-AS-BLOCK	US	whitelisted

DNS requests

Domain	IP	Reputation
settings-win.data.microsoft.com	4.231.128.59 51.104.136.2 40.127.240.158	whitelisted
google.com	142.251.208.14	whitelisted
crl.microsoft.com	184.24.77.11 184.24.77.29 184.24.77.12 184.24.77.35 184.24.77.42 184.24.77.30 184.24.77.41 184.24.77.6 184.24.77.14 184.24.77.25 184.24.77.27 184.24.77.31 184.24.77.7 184.24.77.34 184.24.77.10	whitelisted
www.microsoft.com	88.221.169.152 23.52.181.212	whitelisted
customers.dotfixsoft.com	5.187.2.111	unknown
client.wns.windows.com	172.211.123.249	whitelisted
login.live.com	40.126.31.0 20.190.159.75 40.126.31.73 40.126.31.71 40.126.31.67 20.190.159.64 20.190.159.2 20.190.159.128	whitelisted
ocsp.digicert.com	184.30.131.245	whitelisted
slscr.update.microsoft.com	135.233.95.144	whitelisted
fe3cr.delivery.mp.microsoft.com	20.3.187.198	whitelisted

Threats

PID	Process	Class	Message
—	—	Unknown Traffic	ET USER_AGENTS Microsoft Dr Watson User-Agent (MSDW)

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No debug info

General Info

VB.Decompiler.v11.5_PatchFile_GautamGreat.rar

79A092E7534754AA5DD3DAAB77031FAD

5D9CD38E5BA040E204F784EC024510402F8A9070

C661BF321B0E3206E839ABA5E07A98A5B4894FCC00EBCB88BB05DD5BCD697DFC

98304:5WcnJQ6wNUMvLNvD38ouiU1qMpI65UicdTjXirFYPKk4DX7OxABDTBDmaxnoX5Br:XqPM/apvEOKfW7omgmGq

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Executing a file with an untrusted certificate

SUSPICIOUS

INFO

The sample compiled with english language support

Checks supported languages

Executable content was dropped or overwritten

Manual execution by a user

Reads the computer name

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

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings