Malware analysis CefSharp.BrowserSubprocess.exe Malicious activity

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File name:	CefSharp.BrowserSubprocess.exe
Full analysis:	https://app.any.run/tasks/6ffe4a2f-580c-4deb-8c65-1e355d12f8d9
Verdict:	Malicious activity
Analysis date:	November 22, 2024, 10:33:28
OS:	Windows 10 Professional (build: 19045, 64 bit)
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32+ executable (GUI) x86-64, for MS Windows, 5 sections
MD5:	66849757185E3E18FCDEDF8DC5907AC2
SHA1:	6E0B962DE50FEF962505BA9D442F27B822388138
SHA256:	B26A963E270DFD01173120BD5F854AB364884391E9D64DBAE3A956583628B5A3
SSDEEP:	384:aRHNz/HNzpa4aje1Ubvh86jtmmKoAbbHg8Shpuec8UpGlBUXSTRDt1RVOIsQ+f28:aFViJbJLmFicXGleXSFxxOIprH6

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
- Executing a file with an untrusted certificate
  - CefSharp.BrowserSubprocess.exe (PID: 5920)
SUSPICIOUS
No suspicious indicators.
INFO
No info indicators.

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:	2024:08:29 15:23:50+00:00
ImageFileCharacteristics:	Executable, Large address aware
PEType:	PE32+
LinkerVersion:	14.29
CodeSize:	22016
InitializedDataSize:	3584
UninitializedDataSize:	-
EntryPoint:	0x2dfc
OSVersion:	6
ImageVersion:	-
SubsystemVersion:	6
Subsystem:	Windows GUI
FileVersionNumber:	24.8.63.0
ProductVersionNumber:	24.8.63.0
FileFlagsMask:	0x003f
FileFlags:	(none)
FileOS:	Windows NT 32-bit
ObjectFileType:	Executable application
FileSubtype:	-
LanguageCode:	English (U.S.)
CharacterSet:	Unicode
CompanyName:	Code Systems Corporation
FileDescription:	Turbo Virtual Machine Executable
FileVersion:	24.8.63
InternalName:	StubExe.exe
LegalCopyright:	Copyright © 2017 Code Systems Corporation
OriginalFileName:	StubExe.exe
ProductName:	Turbo Virtual Machine
ProductVersion:	24.8.63

No data.

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All screenshots are available in the full report

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Total processes

117

Monitored processes

1

Malicious processes

0

Suspicious processes

1

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

5920

"C:\Users\admin\AppData\Local\Temp\CefSharp.BrowserSubprocess.exe"

C:\Users\admin\AppData\Local\Temp\CefSharp.BrowserSubprocess.exe

—

explorer.exe

User:

admin

Company:

Code Systems Corporation

Integrity Level:

MEDIUM

Description:

Turbo Virtual Machine Executable

Exit code:

4294967295

Version:

24.8.63

Modules

Images
c:\users\admin\appdata\local\temp\cefsharp.browsersubprocess.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

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Total events

26

Read events

26

Write events

0

Delete events

0

Modification events

No data

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Executable files

0

Suspicious files

0

Text files

0

Unknown types

0

Dropped files

No data

Download PCAP, analyze network streams, HTTP content and a lot more at the full report

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HTTP(S) requests

4

TCP/UDP connections

5

DNS requests

5

Threats

0

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	NL	binary	973 b	whitelisted
—	—	GET	200	95.101.149.131:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	NL	binary	973 b	whitelisted
—	—	GET	200	2.16.164.34:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	NL	binary	1.01 Kb	whitelisted
—	—	GET	200	2.16.164.34:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	NL	binary	1.01 Kb	whitelisted

Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID	Process	IP	Domain	ASN	CN	Reputation
5752	RUXIMICS.exe	51.124.78.146:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
4	System	192.168.100.255:137	—	—	—	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
4712	MoUsoCoreWorker.exe	51.124.78.146:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
4932	svchost.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	51.124.78.146 20.73.194.208	whitelisted
google.com	216.58.212.174	whitelisted
crl.microsoft.com	2.16.164.34 2.16.164.99 2.16.164.40 2.16.164.49 2.16.164.9 2.16.164.24 2.16.164.81	whitelisted
www.microsoft.com	95.101.149.131	whitelisted

Threats

No threats detected

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No debug info

General Info

CefSharp.BrowserSubprocess.exe

66849757185E3E18FCDEDF8DC5907AC2

6E0B962DE50FEF962505BA9D442F27B822388138

B26A963E270DFD01173120BD5F854AB364884391E9D64DBAE3A956583628B5A3

384:aRHNz/HNzpa4aje1Ubvh86jtmmKoAbbHg8Shpuec8UpGlBUXSTRDt1RVOIsQ+f28:aFViJbJLmFicXGleXSFxxOIprH6

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Executing a file with an untrusted certificate

SUSPICIOUS

INFO

Malware configuration

Static information

TRiD

EXIF

EXE

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Modules

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings