Malware analysis Bitwarden-Installer-2025.2.1.exe Malicious activity

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File name:	Bitwarden-Installer-2025.2.1.exe
Full analysis:	https://app.any.run/tasks/bd48e9ce-62d9-416c-a3c4-87c84392da14
Verdict:	Malicious activity
Analysis date:	May 15, 2025, 14:52:13
OS:	Windows 10 Professional (build: 19044, 64 bit)
Indicators:
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive, 5 sections
MD5:	24B74B3DCF7B95C5C99C9AFBFADD0BD8
SHA1:	72DC356F9328B77F24ACEAAE7AE24224C18D252F
SHA256:	8556A195A0A7D456716D22A879AFE7F4006B4DE2CDD1322FDD7D75F80BEC9F96
SSDEEP:	24576:SBLifzIMulZSRF4HyNt85nq2O6vhCmSxbv0kFgQ0Qh1lhUqXaM4DEA+AD:SB+fzIMulZSRF4HyNt85q2O6ZCmSxbvU

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)
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
- The process creates files with name similar to system file names
  - Bitwarden-Installer-2025.2.1.exe (PID: 1812)
  - Bitwarden-Installer-2025.2.1.exe (PID: 5244)
- Malware-specific behavior (creating "System.dll" in Temp)
  - Bitwarden-Installer-2025.2.1.exe (PID: 1812)
  - Bitwarden-Installer-2025.2.1.exe (PID: 5244)
- Executable content was dropped or overwritten
  - Bitwarden-Installer-2025.2.1.exe (PID: 1812)
  - Bitwarden-Installer-2025.2.1.exe (PID: 5244)
- Reads security settings of Internet Explorer
  - Bitwarden-Installer-2025.2.1.exe (PID: 1812)
  - Bitwarden-Installer-2025.2.1.exe (PID: 5244)
- Application launched itself
  - Bitwarden-Installer-2025.2.1.exe (PID: 1812)
- There is functionality for taking screenshot (YARA)
  - Bitwarden-Installer-2025.2.1.exe (PID: 1812)
  - Bitwarden-Installer-2025.2.1.exe (PID: 5244)
INFO
- Checks supported languages
  - Bitwarden-Installer-2025.2.1.exe (PID: 1812)
  - Bitwarden-Installer-2025.2.1.exe (PID: 5244)
- The sample compiled with english language support
  - Bitwarden-Installer-2025.2.1.exe (PID: 1812)
  - Bitwarden-Installer-2025.2.1.exe (PID: 5244)
- Process checks computer location settings
  - Bitwarden-Installer-2025.2.1.exe (PID: 1812)
- Reads the computer name
  - Bitwarden-Installer-2025.2.1.exe (PID: 1812)
- Create files in a temporary directory
  - Bitwarden-Installer-2025.2.1.exe (PID: 1812)
  - Bitwarden-Installer-2025.2.1.exe (PID: 5244)
- Creates files in the program directory
  - Bitwarden-Installer-2025.2.1.exe (PID: 5244)
- Checks proxy server information
  - Bitwarden-Installer-2025.2.1.exe (PID: 5244)
- Reads the machine GUID from the registry
  - Bitwarden-Installer-2025.2.1.exe (PID: 5244)
- Reads the software policy settings
  - Bitwarden-Installer-2025.2.1.exe (PID: 5244)
- Creates files or folders in the user directory
  - Bitwarden-Installer-2025.2.1.exe (PID: 5244)

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	\|	Win32 Executable MS Visual C++ (generic) (67.4)
.dll	\|	Win32 Dynamic Link Library (generic) (14.2)
.exe	\|	Win32 Executable (generic) (9.7)
.exe	\|	Generic Win/DOS Executable (4.3)
.exe	\|	DOS Executable Generic (4.3)

EXIF

EXE

MachineType:	Intel 386 or later, and compatibles
TimeStamp:	2018:12:15 22:26:14+00:00
ImageFileCharacteristics:	No relocs, Executable, No line numbers, No symbols, 32-bit
PEType:	PE32
LinkerVersion:	6
CodeSize:	26624
InitializedDataSize:	473088
UninitializedDataSize:	16384
EntryPoint:	0x338f
OSVersion:	4
ImageVersion:	6
SubsystemVersion:	4
Subsystem:	Windows GUI
FileVersionNumber:	2025.2.1.0
ProductVersionNumber:	2025.2.1.0
FileFlagsMask:	0x0000
FileFlags:	(none)
FileOS:	Win32
ObjectFileType:	Executable application
FileSubtype:	-
LanguageCode:	English (U.S.)
CharacterSet:	Windows, Latin1
CompanyName:	Bitwarden Inc.
FileDescription:	A secure and free password manager for all of your devices.
FileVersion:	2025.2.1
LegalCopyright:	Copyright © 2015-2024 Bitwarden Inc.
ProductName:	Bitwarden
ProductVersion:	2025.2.1

No data.

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All screenshots are available in the full report

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Total processes

130

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

1812

"C:\Users\admin\AppData\Local\Temp\Bitwarden-Installer-2025.2.1.exe"

C:\Users\admin\AppData\Local\Temp\Bitwarden-Installer-2025.2.1.exe

explorer.exe

User:

admin

Company:

Bitwarden Inc.

Integrity Level:

MEDIUM

Description:

A secure and free password manager for all of your devices.

Version:

2025.2.1

Modules

Images
c:\users\admin\appdata\local\temp\bitwarden-installer-2025.2.1.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

2108

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

5244

"C:\Users\admin\AppData\Local\Temp\Bitwarden-Installer-2025.2.1.exe" /UAC:8014C /NCRC

C:\Users\admin\AppData\Local\Temp\Bitwarden-Installer-2025.2.1.exe

Bitwarden-Installer-2025.2.1.exe

User:

admin

Company:

Bitwarden Inc.

Integrity Level:

HIGH

Description:

A secure and free password manager for all of your devices.

Version:

2025.2.1

Modules

Images
c:\users\admin\appdata\local\temp\bitwarden-installer-2025.2.1.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

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Total events

1 000

Read events

997

Write events

Delete events

Modification events


(PID) Process:	(5244) Bitwarden-Installer-2025.2.1.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content
Operation:	write	Name:	CachePrefix
Value:
(PID) Process:	(5244) Bitwarden-Installer-2025.2.1.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies
Operation:	write	Name:	CachePrefix
Value: Cookie:
(PID) Process:	(5244) Bitwarden-Installer-2025.2.1.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History
Operation:	write	Name:	CachePrefix
Value: Visited:

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
1812	Bitwarden-Installer-2025.2.1.exe	C:\Users\admin\AppData\Local\Temp\nsmC789.tmp\System.dll		executable
		MD5:0D7AD4F45DC6F5AA87F606D0331C6901	SHA256:3EB38AE99653A7DBC724132EE240F6E5C4AF4BFE7C01D31D23FAF373F9F2EACA
1812	Bitwarden-Installer-2025.2.1.exe	C:\Users\admin\AppData\Local\Temp\nsmC789.tmp\modern-wizard.bmp		image
		MD5:0073DF1BFECFC543F9457843CC02B4A5	SHA256:35176DD40612D7542AF49B10E7ED927F25B4AB4A935BB4597909BEED8D1CACF8
5244	Bitwarden-Installer-2025.2.1.exe	C:\Users\admin\AppData\Local\Temp\nsg2C5D.tmp\StdUtils.dll		executable
		MD5:C6A6E03F77C313B267498515488C5740	SHA256:B72E9013A6204E9F01076DC38DABBF30870D44DFC66962ADBF73619D4331601E
1812	Bitwarden-Installer-2025.2.1.exe	C:\Users\admin\AppData\Local\Temp\nsmC789.tmp\nsDialogs.dll		executable
		MD5:466179E1C8EE8A1FF5E4427DBB6C4A01	SHA256:1E40211AF65923C2F4FD02CE021458A7745D28E2F383835E3015E96575632172
5244	Bitwarden-Installer-2025.2.1.exe	C:\Users\admin\AppData\Local\Temp\nsg2C5D.tmp\UAC.dll		executable
		MD5:ADB29E6B186DAA765DC750128649B63D	SHA256:2F7F8FC05DC4FD0D5CDA501B47E4433357E887BBFED7292C028D99C73B52DC08
5244	Bitwarden-Installer-2025.2.1.exe	C:\Users\admin\AppData\Local\Temp\nsg2C5D.tmp\System.dll		executable
		MD5:0D7AD4F45DC6F5AA87F606D0331C6901	SHA256:3EB38AE99653A7DBC724132EE240F6E5C4AF4BFE7C01D31D23FAF373F9F2EACA
5244	Bitwarden-Installer-2025.2.1.exe	C:\Users\admin\AppData\Local\Temp\nsg2C5D.tmp\modern-wizard.bmp		image
		MD5:0073DF1BFECFC543F9457843CC02B4A5	SHA256:35176DD40612D7542AF49B10E7ED927F25B4AB4A935BB4597909BEED8D1CACF8
5244	Bitwarden-Installer-2025.2.1.exe	C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751		binary
		MD5:E192462F281446B5D1500D474FBACC4B	SHA256:F1BA9F1B63C447682EBF9DE956D0DA2A027B1B779ABEF9522D347D3479139A60
1812	Bitwarden-Installer-2025.2.1.exe	C:\Users\admin\AppData\Local\Temp\nsmC789.tmp\UAC.dll		executable
		MD5:ADB29E6B186DAA765DC750128649B63D	SHA256:2F7F8FC05DC4FD0D5CDA501B47E4433357E887BBFED7292C028D99C73B52DC08
1812	Bitwarden-Installer-2025.2.1.exe	C:\Users\admin\AppData\Local\Temp\nsmC789.tmp\StdUtils.dll		executable
		MD5:C6A6E03F77C313B267498515488C5740	SHA256:B72E9013A6204E9F01076DC38DABBF30870D44DFC66962ADBF73619D4331601E

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
300	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
300	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
6544	svchost.exe	GET	200	2.23.77.188:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	unknown	—	—	whitelisted
5244	Bitwarden-Installer-2025.2.1.exe	GET	200	23.209.209.135:80	http://x1.c.lencr.org/	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	192.168.100.255:138	—	—	—	whitelisted
—	—	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
2104	svchost.exe	40.127.240.158:443	—	MICROSOFT-CORP-MSN-AS-BLOCK	IE	unknown
3216	svchost.exe	172.211.123.248:443	client.wns.windows.com	MICROSOFT-CORP-MSN-AS-BLOCK	FR	whitelisted
6544	svchost.exe	20.190.159.75:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
6544	svchost.exe	2.23.77.188:80	ocsp.digicert.com	AKAMAI-AS	DE	whitelisted
2104	svchost.exe	4.231.128.59:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
4	System	192.168.100.255:137	—	—	—	whitelisted
300	SIHClient.exe	4.245.163.56:443	slscr.update.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	US	whitelisted
300	SIHClient.exe	184.30.21.171:80	www.microsoft.com	AKAMAI-AS	DE	whitelisted

DNS requests

Domain	IP	Reputation
settings-win.data.microsoft.com	51.104.136.2 4.231.128.59	whitelisted
client.wns.windows.com	172.211.123.248	whitelisted
login.live.com	20.190.159.75 20.190.159.129 40.126.31.128 20.190.159.130 20.190.159.0 20.190.159.73 40.126.31.130 40.126.31.71	whitelisted
ocsp.digicert.com	2.23.77.188	whitelisted
slscr.update.microsoft.com	4.245.163.56	whitelisted
www.microsoft.com	184.30.21.171	whitelisted
fe3cr.delivery.mp.microsoft.com	40.69.42.241	whitelisted
artifacts.bitwarden.com	199.232.197.91 199.232.193.91	whitelisted
x1.c.lencr.org	23.209.209.135	whitelisted
activation-v2.sls.microsoft.com	40.91.76.224	whitelisted

Threats

No threats detected

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No debug info

General Info

Bitwarden-Installer-2025.2.1.exe

24B74B3DCF7B95C5C99C9AFBFADD0BD8

72DC356F9328B77F24ACEAAE7AE24224C18D252F

8556A195A0A7D456716D22A879AFE7F4006B4DE2CDD1322FDD7D75F80BEC9F96

24576:SBLifzIMulZSRF4HyNt85nq2O6vhCmSxbv0kFgQ0Qh1lhUqXaM4DEA+AD:SB+fzIMulZSRF4HyNt85q2O6ZCmSxbvU

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

SUSPICIOUS

The process creates files with name similar to system file names

Malware-specific behavior (creating "System.dll" in Temp)

Executable content was dropped or overwritten

Reads security settings of Internet Explorer

Application launched itself

There is functionality for taking screenshot (YARA)

INFO

Checks supported languages

The sample compiled with english language support

Process checks computer location settings

Reads the computer name

Create files in a temporary directory

Creates files in the program directory

Checks proxy server information

Reads the machine GUID from the registry

Reads the software policy settings

Creates files or folders in the user directory

Malware configuration

Static information

TRiD

EXIF

EXE

Video and screenshots

Processes

Behavior graph

Specs description

Process information

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