Malware analysis Blurifuscator Source Code.rar Malicious activity

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File name:	Blurifuscator Source Code.rar
Full analysis:	https://app.any.run/tasks/ad7c4c88-d511-447b-bea0-32f71b75f07b
Verdict:	Malicious activity
Analysis date:	September 07, 2024, 05:27:10
OS:	Windows 10 Professional (build: 19045, 64 bit)
Indicators:
MIME:	application/x-rar
File info:	RAR archive data, v5
MD5:	6A1F7923DF2F85BCDBC72DCEF44C02BA
SHA1:	20FF4F7970909E2122592A89D899F9CA895EB8E2
SHA256:	F8042804E027C786C0D0264E210FE6D2D26CC3603E6BA5EE3F8BD162736A5CFE
SSDEEP:	98304:izVv/tOg3OKxrax7CogTfi4iLH6wsfVTrN1DoKARfqKsrUcOhrl30jt9puD4WAyb:BgSjB3fUByt3XgQhNfv6hNs+pqR

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
- Reads security settings of Internet Explorer
  - WinRAR.exe (PID: 2456)
- Process drops legitimate windows executable
  - WinRAR.exe (PID: 2232)
- The process creates files with name similar to system file names
  - WinRAR.exe (PID: 2232)
- Application launched itself
  - WinRAR.exe (PID: 2456)
INFO
- The process uses the downloaded file
  - WinRAR.exe (PID: 2232)
  - WinRAR.exe (PID: 2456)
- Executable content was dropped or overwritten
  - WinRAR.exe (PID: 2232)

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)

No data.

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All screenshots are available in the full report

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Total processes

131

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

2232

"C:\Program Files\WinRAR\WinRAR.exe" "C:\Users\admin\AppData\Local\Temp\Rar$DIa2456.15655\Blurifuscator Source Code.rar"

C:\Program Files\WinRAR\WinRAR.exe

WinRAR.exe

User:

admin

Company:

Alexander Roshal

Integrity Level:

MEDIUM

Description:

WinRAR archiver

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

2456

"C:\Program Files\WinRAR\WinRAR.exe" "C:\Users\admin\AppData\Local\Temp\Blurifuscator Source Code.rar"

C:\Program Files\WinRAR\WinRAR.exe

—

explorer.exe

User:

admin

Company:

Alexander Roshal

Integrity Level:

MEDIUM

Description:

WinRAR archiver

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

4824

"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

6108

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

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Total events

7 889

Read events

7 865

Write events

Delete events

Modification events


(PID) Process:	(2456) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:	write	Name:	1
Value: C:\Users\admin\Desktop\GoogleChromeEnterpriseBundle64.zip
(PID) Process:	(2456) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\ArcHistory
Operation:	write	Name:	0
Value: C:\Users\admin\AppData\Local\Temp\Blurifuscator Source Code.rar
(PID) Process:	(2456) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	name
Value: 120
(PID) Process:	(2456) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	size
Value: 80
(PID) Process:	(2456) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	type
Value: 120
(PID) Process:	(2456) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\FileColumnWidths
Operation:	write	Name:	mtime
Value: 100
(PID) Process:	(2456) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\ArcColumnWidths
Operation:	write	Name:	name
Value: 256
(PID) Process:	(2456) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\ArcColumnWidths
Operation:	write	Name:	size
Value: 80
(PID) Process:	(2456) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\ArcColumnWidths
Operation:	write	Name:	psize
Value: 80
(PID) Process:	(2456) WinRAR.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\WinRAR\FileList\ArcColumnWidths
Operation:	write	Name:	type
Value: 120

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Executable files

113

Suspicious files

151

Text files

771

Unknown types

Dropped files

PID	Process	Filename		Type
2456	WinRAR.exe	C:\Users\admin\AppData\Local\Temp\Rar$DIa2456.15655\Blurifuscator Source Code.rar		—
		MD5:—	SHA256:—
2232	WinRAR.exe	C:\Users\admin\AppData\Local\Temp\Rar$DRa2232.16955\Blurifuscator Source Code\.vs\ProjectEvaluation\blurifuscator.projects.v7.bin		—
		MD5:—	SHA256:—
2232	WinRAR.exe	C:\Users\admin\AppData\Local\Temp\Rar$DRa2232.16955\Blurifuscator Source Code\.vs\Blurifuscator\v17\.futdcache.v2		binary
		MD5:AA70287CF994BFC6D6E8D0D698D7F865	SHA256:7ED845303985190DDE89ACC3FEA1C44B4B66205AD484A8E98A0DFB89440AFC3F
2232	WinRAR.exe	C:\Users\admin\AppData\Local\Temp\Rar$DRa2232.16955\Blurifuscator Source Code\.vs\Blurifuscator\FileContentIndex\d1dbff6a-62fa-41cd-97f1-13d8158bf22a.vsidx		binary
		MD5:043B024769B52DB05B66E25443A0B1F1	SHA256:61EC02394488BF3581FDA13517A18BA76664289C7DE7115161DB692D6386EBB7
2232	WinRAR.exe	C:\Users\admin\AppData\Local\Temp\Rar$DRa2232.16955\Blurifuscator Source Code\.vs\Blurifuscator\DesignTimeBuild\.dtbcache.v2		binary
		MD5:673FCA078B0F6874FFF95C8CEBF96542	SHA256:DBACEC8375C088D2CD0A1DE15C59256FACC3EC2CD27DC29903F8D12A4904BE0A
2232	WinRAR.exe	C:\Users\admin\AppData\Local\Temp\Rar$DRa2232.16955\Blurifuscator Source Code\.vs\Blurifuscator\FileContentIndex\6aa5ab58-8f28-494c-abe0-5d2dc6b1f637.vsidx		binary
		MD5:CE5CF4A7B7425E67C8F383C4C79A9E34	SHA256:0C3952A3FCCB4CD58F2928E344B2C5F6877F9FF091D4741E825F8697FC9514B1
2232	WinRAR.exe	C:\Users\admin\AppData\Local\Temp\Rar$DRa2232.16955\Blurifuscator Source Code\.vs\Blurifuscator\v17\.suo		binary
		MD5:DFE1FEE044E4CFEFF1FC64EFDD3EA429	SHA256:F32E7DFA7DA10528BE26D7CC933ADD21CED9E65F7B245D6864BE2298363CE4DF
2232	WinRAR.exe	C:\Users\admin\AppData\Local\Temp\Rar$DRa2232.16955\Blurifuscator Source Code\Blurifuscator.CLI\Blurifuscator.CLI.csproj.user		xml
		MD5:87A98AEB64F9A5273008ABA4D5AE85B3	SHA256:C2E8D1B48A93D1F9340DAE6BDF3B0950E3F3BB85D7FC3F0643B8FA22B8AFFA0C
2232	WinRAR.exe	C:\Users\admin\AppData\Local\Temp\Rar$DRa2232.16955\Blurifuscator Source Code\.vs\Blurifuscator\FileContentIndex\704e3d5c-a0f3-4314-b2a8-ec78407c9092.vsidx		binary
		MD5:7BCEA34848A6AE5BE04B1F9301333A23	SHA256:F3B2EDF181864B430A2FE487D920C4A3BF4963BC6D02036ECE17E9697F2B66E6
2232	WinRAR.exe	C:\Users\admin\AppData\Local\Temp\Rar$DRa2232.16955\Blurifuscator Source Code\.vs\Blurifuscator\FileContentIndex\edb47736-2e39-44f4-a65d-4d0c83460b45.vsidx		binary
		MD5:6FAC18018F7523B118255F66A0C55817	SHA256:0E05E6DB8DCCB0D8A8BCA2F1FCECAFF4C69D694A7C4EC1C18520C1AE83BD1282

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
5816	svchost.exe	GET	200	192.229.221.95:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	unknown	—	—	whitelisted
7076	svchost.exe	GET	200	95.101.149.131:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	unknown	—	—	whitelisted
568	SIHClient.exe	GET	200	95.101.149.131:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl	unknown	—	—	whitelisted
568	SIHClient.exe	GET	200	95.101.149.131:80	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
6160	RUXIMICS.exe	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
2120	MoUsoCoreWorker.exe	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
7076	svchost.exe	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
4	System	192.168.100.255:137	—	—	—	whitelisted
7076	svchost.exe	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
7076	svchost.exe	95.101.149.131:80	www.microsoft.com	Akamai International B.V.	NL	whitelisted
3260	svchost.exe	40.115.3.253:443	client.wns.windows.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
5816	svchost.exe	40.126.32.133:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
5816	svchost.exe	192.229.221.95:80	ocsp.digicert.com	EDGECAST	US	whitelisted

DNS requests

Domain	IP	Reputation
google.com	172.217.16.206	whitelisted
settings-win.data.microsoft.com	40.127.240.158 51.104.136.2 4.231.128.59	whitelisted
www.microsoft.com	95.101.149.131	whitelisted
client.wns.windows.com	40.115.3.253	whitelisted
login.live.com	40.126.32.133 40.126.32.136 20.190.160.20 40.126.32.138 20.190.160.14 40.126.32.74 40.126.32.68 20.190.160.22	whitelisted
ocsp.digicert.com	192.229.221.95	whitelisted
slscr.update.microsoft.com	20.12.23.50	whitelisted
fe3cr.delivery.mp.microsoft.com	13.95.31.18	whitelisted

Threats

No threats detected

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No debug info

General Info

Blurifuscator Source Code.rar

6A1F7923DF2F85BCDBC72DCEF44C02BA

20FF4F7970909E2122592A89D899F9CA895EB8E2

F8042804E027C786C0D0264E210FE6D2D26CC3603E6BA5EE3F8BD162736A5CFE

98304:izVv/tOg3OKxrax7CogTfi4iLH6wsfVTrN1DoKARfqKsrUcOhrl30jt9puD4WAyb:BgSjB3fUByt3XgQhNfv6hNs+pqR

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

SUSPICIOUS

Reads security settings of Internet Explorer

Process drops legitimate windows executable

The process creates files with name similar to system file names

Application launched itself

INFO

The process uses the downloaded file

Executable content was dropped or overwritten

Malware configuration

Static information

TRiD

Video and screenshots

Processes

Behavior graph

Specs description

Process information

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