Malware analysis Firefox Installer.exe Malicious activity

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File name:	Firefox Installer.exe
Full analysis:	https://app.any.run/tasks/553a65b7-5437-4cea-b056-be00743947ea
Verdict:	Malicious activity
Analysis date:	January 08, 2025, 16:13:22
OS:	Windows 10 Professional (build: 19045, 64 bit)
Tags:	upx arch-scr
Indicators:
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed, 3 sections
MD5:	04C3E1B7EB4DD63317EB54B3E5089675
SHA1:	0BE38E5D8C5268F0A297A351650B7EAE11B9255F
SHA256:	8F25D5220EE8E2305575FCA71A6D229F1EF2FD7E5CA5780D7E899BFF4AEC4219
SSDEEP:	12288:sSvvp2jRWmtab28hx/vKv2D9irEEcwyvawvS5SggO0t5vkg:sSHp2jQmAS0x/vKvs9eERfSwvX1Nt5vF

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
- Registers / Runs the DLL via REGSVR32.EXE
  - setup.exe (PID: 4228)
SUSPICIOUS
- Executable content was dropped or overwritten
  - Firefox Installer.exe (PID: 1828)
  - setup-stub.exe (PID: 4160)
  - setup-stub.exe (PID: 3680)
  - download.exe (PID: 2212)
  - maintenanceservice_tmp.exe (PID: 4576)
  - setup.exe (PID: 4228)
  - maintenanceservice_installer.exe (PID: 2452)
- Malware-specific behavior (creating "System.dll" in Temp)
  - setup-stub.exe (PID: 4160)
  - setup-stub.exe (PID: 3680)
  - setup.exe (PID: 4228)
  - maintenanceservice_installer.exe (PID: 2452)
- Reads security settings of Internet Explorer
  - setup-stub.exe (PID: 4160)
  - setup-stub.exe (PID: 3680)
- Application launched itself
  - setup-stub.exe (PID: 4160)
- Reads Internet Explorer settings
  - setup-stub.exe (PID: 3680)
- Process drops legitimate windows executable
  - setup.exe (PID: 4228)
  - download.exe (PID: 2212)
- Loads DLL from Mozilla Firefox
  - regsvr32.exe (PID: 4512)
  - default-browser-agent.exe (PID: 2088)
- The process drops Mozilla's DLL files
  - download.exe (PID: 2212)
  - setup.exe (PID: 4228)
- The process drops C-runtime libraries
  - setup.exe (PID: 4228)
  - download.exe (PID: 2212)
INFO
- Checks supported languages
  - setup-stub.exe (PID: 4160)
  - Firefox Installer.exe (PID: 1828)
  - setup-stub.exe (PID: 3680)
- The sample compiled with english language support
  - Firefox Installer.exe (PID: 1828)
  - download.exe (PID: 2212)
  - setup.exe (PID: 4228)
  - maintenanceservice_installer.exe (PID: 2452)
  - firefox.exe (PID: 6496)
- Reads the computer name
  - Firefox Installer.exe (PID: 1828)
  - setup-stub.exe (PID: 4160)
  - setup-stub.exe (PID: 3680)
- Process checks whether UAC notifications are on
  - setup-stub.exe (PID: 4160)
- Create files in a temporary directory
  - Firefox Installer.exe (PID: 1828)
- Process checks computer location settings
  - setup-stub.exe (PID: 4160)
- UPX packer has been detected
  - Firefox Installer.exe (PID: 1828)
- Creates files or folders in the user directory
  - setup-stub.exe (PID: 3680)
- Checks proxy server information
  - setup-stub.exe (PID: 3680)
- Application launched itself
  - firefox.exe (PID: 3576)
  - firefox.exe (PID: 6296)
  - firefox.exe (PID: 6476)
  - firefox.exe (PID: 2756)
  - firefox.exe (PID: 6476)
  - firefox.exe (PID: 6496)
- Manual execution by a user
  - firefox.exe (PID: 6476)
- Executable content was dropped or overwritten
  - firefox.exe (PID: 6496)

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	\|	UPX compressed Win32 Executable (64.2)
.dll	\|	Win32 Dynamic Link Library (generic) (15.6)
.exe	\|	Win32 Executable (generic) (10.6)
.exe	\|	Generic Win/DOS Executable (4.7)
.exe	\|	DOS Executable Generic (4.7)

EXIF

EXE

MachineType:	Intel 386 or later, and compatibles
TimeStamp:	2018:08:30 22:18:33+00:00
ImageFileCharacteristics:	No relocs, Executable, No line numbers, No symbols, 32-bit
PEType:	PE32
LinkerVersion:	6
CodeSize:	69632
InitializedDataSize:	65536
UninitializedDataSize:	147456
EntryPoint:	0x34fa0
OSVersion:	4
ImageVersion:	-
SubsystemVersion:	4
Subsystem:	Windows GUI
FileVersionNumber:	18.5.0.0
ProductVersionNumber:	18.5.0.0
FileFlagsMask:	0x003f
FileFlags:	(none)
FileOS:	Windows NT 32-bit
ObjectFileType:	Executable application
FileSubtype:	-
LanguageCode:	English (U.S.)
CharacterSet:	Unicode
CompanyName:	Mozilla
FileDescription:	Firefox
FileVersion:	18.05
InternalName:	7zS.sfx
LegalCopyright:	Mozilla
OriginalFileName:	7zS.sfx.exe
ProductName:	Firefox
ProductVersion:	18.05

No data.

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All screenshots are available in the full report

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Total processes

157

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

1828

"C:\Users\admin\AppData\Local\Temp\Firefox Installer.exe"

C:\Users\admin\AppData\Local\Temp\Firefox Installer.exe

explorer.exe

User:

admin

Company:

Mozilla

Integrity Level:

MEDIUM

Description:

Firefox

Exit code:

Version:

18.05

Modules

Images
c:\users\admin\appdata\local\temp\firefox installer.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\msvcrt.dll

2088

"C:\Program Files\Mozilla Firefox\default-browser-agent.exe" register-task 308046B0AF4A39CB

C:\Program Files\Mozilla Firefox\default-browser-agent.exe

—

setup.exe

User:

admin

Company:

Mozilla Foundation

Integrity Level:

HIGH

Exit code:

Version:

134.0

Modules

Images
c:\program files\mozilla firefox\default-browser-agent.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.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

2212

"C:\Users\admin\AppData\Local\Temp\nse613F.tmp\download.exe" /LaunchedFromStub /INI=C:\Users\admin\AppData\Local\Temp\nse613F.tmp\config.ini

C:\Users\admin\AppData\Local\Temp\nse613F.tmp\download.exe

setup-stub.exe

User:

admin

Company:

Mozilla

Integrity Level:

HIGH

Description:

Firefox

Exit code:

Version:

18.05

Modules

Images
c:\users\admin\appdata\local\temp\nse613f.tmp\download.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\msvcrt.dll

2452

"C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe"

C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe

setup.exe

User:

admin

Company:

Mozilla Corporation

Integrity Level:

HIGH

Description:

Mozilla Maintenance Service Installer

Exit code:

Version:

134.0

Modules

Images
c:\program files\mozilla firefox\maintenanceservice_installer.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\advapi32.dll

2756

"C:\Program Files\Mozilla Firefox\firefox.exe"

C:\Program Files\Mozilla Firefox\firefox.exe

—

firefox.exe

User:

admin

Company:

Mozilla Corporation

Integrity Level:

MEDIUM

Description:

Firefox

Version:

134.0

Modules

Images
c:\program files\mozilla firefox\firefox.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\ucrtbase.dll
c:\program files\mozilla firefox\mozglue.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\crypt32.dll
c:\windows\system32\msvcp140.dll
c:\windows\system32\vcruntime140.dll

3576

"C:\Program Files\Mozilla Firefox\firefox.exe" --backgroundtask defaultagent register-task 308046B0AF4A39CB

C:\Program Files\Mozilla Firefox\firefox.exe

—

default-browser-agent.exe

User:

admin

Company:

Mozilla Corporation

Integrity Level:

HIGH

Description:

Firefox

Exit code:

Version:

134.0

Modules

Images
c:\program files\mozilla firefox\firefox.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\ucrtbase.dll
c:\program files\mozilla firefox\mozglue.dll
c:\program files\mozilla firefox\msvcp140.dll
c:\program files\mozilla firefox\vcruntime140.dll
c:\program files\mozilla firefox\vcruntime140_1.dll

3680

"C:\Users\admin\AppData\Local\Temp\7zS4271B603\setup-stub.exe" /UAC:702C8 /NCRC

C:\Users\admin\AppData\Local\Temp\7zS4271B603\setup-stub.exe

setup-stub.exe

User:

admin

Company:

Mozilla Corporation

Integrity Level:

HIGH

Description:

Firefox Installer

Exit code:

Version:

134.0

Modules

Images
c:\users\admin\appdata\local\temp\7zs4271b603\setup-stub.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\advapi32.dll

3840

"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 4652 -prefsLen 27596 -prefMapHandle 4456 -prefMapSize 265037 -jsInitHandle 4452 -jsInitLen 254356 -parentBuildID 20241230151726 -ipcHandle 4444 -initialChannelId {24c5f2e8-773c-485b-9e67-84b1a7723d8c} -parentPid 6496 -crashReporter "\\.\pipe\gecko-crash-server-pipe.6496" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 9 tab

C:\Program Files\Mozilla Firefox\firefox.exe

—

firefox.exe

User:

admin

Company:

Mozilla Corporation

Integrity Level:

LOW

Description:

Firefox

Version:

134.0

Modules

Images
c:\program files\mozilla firefox\firefox.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\ucrtbase.dll
c:\program files\mozilla firefox\mozglue.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\crypt32.dll
c:\windows\system32\msvcp140.dll

3848

"C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20241230151726 -prefsHandle 2148 -prefsLen 23417 -prefMapHandle 2152 -prefMapSize 265037 -ipcHandle 2104 -initialChannelId {195b95c6-439a-4c49-8bb4-ae92740f7a4f} -parentPid 2756 -crashReporter "\\.\pipe\gecko-crash-server-pipe.2756" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 2 socket

C:\Program Files\Mozilla Firefox\firefox.exe

—

firefox.exe

User:

admin

Company:

Mozilla Corporation

Integrity Level:

LOW

Description:

Firefox

Version:

134.0

4160

.\setup-stub.exe

C:\Users\admin\AppData\Local\Temp\7zS4271B603\setup-stub.exe

Firefox Installer.exe

User:

admin

Company:

Mozilla Corporation

Integrity Level:

MEDIUM

Description:

Firefox Installer

Exit code:

Version:

134.0

Modules

Images
c:\users\admin\appdata\local\temp\7zs4271b603\setup-stub.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\advapi32.dll

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Total events

20 142

Read events

20 046

Write events

Delete events

Modification events


(PID) Process:	(3680) setup-stub.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Firefox\TaskBarIDs
Operation:	write	Name:	C:\Program Files\Mozilla Firefox
Value: 308046B0AF4A39CB
(PID) Process:	(3680) setup-stub.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content
Operation:	write	Name:	CachePrefix
Value:
(PID) Process:	(3680) setup-stub.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies
Operation:	write	Name:	CachePrefix
Value: Cookie:
(PID) Process:	(3680) setup-stub.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History
Operation:	write	Name:	CachePrefix
Value: Visited:
(PID) Process:	(3680) setup-stub.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\LowRegistry
Operation:	delete value	Name:	AddToFavoritesInitialSelection
Value:
(PID) Process:	(3680) setup-stub.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\LowRegistry
Operation:	delete value	Name:	AddToFeedsInitialSelection
Value:
(PID) Process:	(4228) setup.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Mozilla\Firefox\TaskBarIDs
Operation:	write	Name:	C:\Program Files\Mozilla Firefox
Value: 308046B0AF4A39CB
(PID) Process:	(4228) setup.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Classes\FirefoxHTML-308046B0AF4A39CB
Operation:	write	Name:	FriendlyTypeName
Value: Firefox HTML Document
(PID) Process:	(4228) setup.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Classes\FirefoxHTML-308046B0AF4A39CB\shell\open\ddeexec
Operation:	delete key	Name:	(default)
Value:
(PID) Process:	(4228) setup.exe	Key:	HKEY_LOCAL_MACHINE\SOFTWARE\Classes\FirefoxPDF-308046B0AF4A39CB
Operation:	write	Name:	FriendlyTypeName
Value: Firefox PDF Document

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Executable files

Suspicious files

270

Text files

144

Unknown types

Dropped files

PID	Process	Filename		Type
1828	Firefox Installer.exe	C:\Users\admin\AppData\Local\Temp\7zS4271B603\postSigningData		text
		MD5:DE228A6CFD36EC7D11445447A52C09F5	SHA256:50DEF86F44839E6FBEF8624DD5AA801F73DBC4B2064843850BECCBA8B8E5D6A3
4160	setup-stub.exe	C:\Users\admin\AppData\Local\Temp\nsx5C8C.tmp\UAC.dll		executable
		MD5:D23B256E9C12FE37D984BAE5017C5F8C	SHA256:EC6A56D981892BF251DF1439BEA425A5F6C7E1C7312D44BEDD5E2957F270338C
4160	setup-stub.exe	C:\Users\admin\AppData\Local\Temp\nsx5C8C.tmp\System.dll		executable
		MD5:B361682FA5E6A1906E754CFA08AA8D90	SHA256:B711C4F17690421C9DC8DDB9ED5A9DDC539B3A28F11E19C851E25DCFC7701C04
3680	setup-stub.exe	C:\Users\admin\AppData\Local\Temp\nse613F.tmp\UAC.dll		executable
		MD5:D23B256E9C12FE37D984BAE5017C5F8C	SHA256:EC6A56D981892BF251DF1439BEA425A5F6C7E1C7312D44BEDD5E2957F270338C
3680	setup-stub.exe	C:\Users\admin\AppData\Local\Temp\nse613F.tmp\System.dll		executable
		MD5:B361682FA5E6A1906E754CFA08AA8D90	SHA256:B711C4F17690421C9DC8DDB9ED5A9DDC539B3A28F11E19C851E25DCFC7701C04
3680	setup-stub.exe	C:\Users\admin\AppData\Local\Temp\nse613F.tmp\bgstub.jpg		image
		MD5:C55F15CEEDC724D6C6E15D1DAF96B698	SHA256:4B7E441D51B790EE1C0BAFF19E4E968392A937877DFA8B84E74464F5BA7A4CF4
3680	setup-stub.exe	C:\Users\admin\AppData\Local\Temp\nse613F.tmp\stub_common.css		text
		MD5:544B51F11AD19DF720669478D28F129D	SHA256:4D9495B6F0E18331659993B79440E414A6E607FCDAEACBC7477E0683CC0FA98B
3680	setup-stub.exe	C:\Users\admin\AppData\Local\Temp\nse613F.tmp\CityHash.dll		executable
		MD5:2021ACC65FA998DAA98131E20C4605BE	SHA256:C299A0A71BF57EB241868158B4FCFE839D15D5BA607E1BDC5499FDF67B334A14
3680	setup-stub.exe	C:\Users\admin\AppData\Local\Temp\nse613F.tmp\InetBgDL.dll		executable
		MD5:AF9E2D138CF17B8FF4D4B8DF7FDDAEFA	SHA256:3921DEC014FADD1DE7F3A36606AC95882A17CB96DF38A5424E58531A169F825B
3680	setup-stub.exe	C:\Users\admin\AppData\Local\Temp\nse613F.tmp\stub_common.js		text
		MD5:EFCE3DCE0165B3F6551DB47E5C0AC8D6	SHA256:DAB39CBAE31848CCE0B5C43FDDD2674FEF4DEA5B7A3DACDAABDC78A8A931817E

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

105

Threats

HTTP requests

PID	Process	Method	HTTP Code	IP	URL	CN	Type	Size	Reputation
3680	setup-stub.exe	GET	200	18.66.145.213:80	http://ocsp.rootca1.amazontrust.com/MFQwUjBQME4wTDAJBgUrDgMCGgUABBRPWaOUU8%2B5VZ5%2Fa9jFTaU9pkK3FAQUhBjMhTTsvAyUlC4IWZzHshBOCggCEwdzEkpLy9ROx7U76vGUhC06D6E%3D	unknown	—	—	unknown
3680	setup-stub.exe	GET	200	192.229.221.95:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTfIs%2BLjDtGwQ09XEB1Yeq%2BtX%2BBgQQU7NfjgtJxXWRM3y5nP%2Be6mK4cD08CEAitQLJg0pxMn17Nqb2Trtk%3D	unknown	—	—	whitelisted
6496	firefox.exe	POST	200	184.24.77.62:80	http://r11.o.lencr.org/	unknown	—	—	whitelisted
3680	setup-stub.exe	GET	200	192.229.221.95:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSRXerF0eFeSWRripTgTkcJWMm7iQQUaDfg67Y7%2BF8Rhvv%2BYXsIiGX0TkICEAc3sNDc3KuNeNL0DLEi%2BT8%3D	unknown	—	—	whitelisted
5064	SearchApp.exe	GET	200	192.229.221.95:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D	unknown	—	—	whitelisted
6496	firefox.exe	POST	200	184.24.77.67:80	http://r10.o.lencr.org/	unknown	—	—	whitelisted
3680	setup-stub.exe	GET	200	34.120.208.123:80	http://download-stats.mozilla.org/stub/v9/release/release/it/1/1/10/0/19045/0/0/0/2/0/68855056/68855056/0/0/16/16/0/0/12/0/0/0/1/123.0/20240213221259/134.0/20241230151726/1/1/0/1/34.117.35.28/dlsource%3Dmozillaci/2/1/0/0/4046/20241230151726	unknown	—	—	whitelisted
6496	firefox.exe	POST	200	184.24.77.62:80	http://r11.o.lencr.org/	unknown	—	—	whitelisted
6496	firefox.exe	POST	200	184.24.77.62:80	http://r11.o.lencr.org/	unknown	—	—	whitelisted
6496	firefox.exe	POST	200	184.24.77.62:80	http://r11.o.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	192.168.100.255:137	—	—	—	whitelisted
4712	MoUsoCoreWorker.exe	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
5864	svchost.exe	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
2452	RUXIMICS.exe	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
3680	setup-stub.exe	18.245.86.112:443	product-details.mozilla.org	—	US	shared
3680	setup-stub.exe	18.66.145.213:80	ocsp.rootca1.amazontrust.com	AMAZON-02	US	shared
5864	svchost.exe	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
5864	svchost.exe	2.16.164.113:80	crl.microsoft.com	Akamai International B.V.	NL	whitelisted
5864	svchost.exe	23.209.210.103:80	www.microsoft.com	PT. Telekomunikasi Selular	ID	whitelisted

DNS requests

Domain	IP	Reputation
settings-win.data.microsoft.com	40.127.240.158 51.104.136.2 51.124.78.146	whitelisted
google.com	142.250.184.206	whitelisted
product-details.mozilla.org	18.245.86.112 18.245.86.36 18.245.86.113 18.245.86.56	shared
ocsp.rootca1.amazontrust.com	18.66.145.213	shared
crl.microsoft.com	2.16.164.113 2.16.164.112	whitelisted
www.microsoft.com	23.209.210.103 184.30.21.171	whitelisted
download.mozilla.org	18.213.206.215 184.73.132.217 52.4.52.198	unknown
ocsp.digicert.com	192.229.221.95	whitelisted
download-installer.cdn.mozilla.net	34.117.35.28	whitelisted
x1.c.lencr.org	23.209.209.135	whitelisted

Threats

No threats detected

Add for printing

No debug info

General Info

Firefox Installer.exe

04C3E1B7EB4DD63317EB54B3E5089675

0BE38E5D8C5268F0A297A351650B7EAE11B9255F

8F25D5220EE8E2305575FCA71A6D229F1EF2FD7E5CA5780D7E899BFF4AEC4219

12288:sSvvp2jRWmtab28hx/vKv2D9irEEcwyvawvS5SggO0t5vkg:sSHp2jQmAS0x/vKvs9eERfSwvX1Nt5vF

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Registers / Runs the DLL via REGSVR32.EXE

SUSPICIOUS

Executable content was dropped or overwritten

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

Reads security settings of Internet Explorer

Application launched itself

Reads Internet Explorer settings

Process drops legitimate windows executable

Loads DLL from Mozilla Firefox

The process drops Mozilla's DLL files

The process drops C-runtime libraries

INFO

Checks supported languages

The sample compiled with english language support

Reads the computer name

Process checks whether UAC notifications are on

Create files in a temporary directory

Process checks computer location settings

UPX packer has been detected

Creates files or folders in the user directory

Checks proxy server information

Application launched itself

Manual execution by a user

Executable content was dropped or overwritten

Malware configuration

Static information

TRiD

EXIF

EXE

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

Information

Modules

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings