Malware analysis a16a269613b2fba53277bdf23cee4dfb87754329437a7ea468cf4fe8ef656b09 Malicious activity

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File name:	a16a269613b2fba53277bdf23cee4dfb87754329437a7ea468cf4fe8ef656b09
Full analysis:	https://app.any.run/tasks/7d06fae2-33e7-42cf-93c1-42a31793f757
Verdict:	Malicious activity
Threats:	Stealc is a stealer malware that targets victims’ sensitive data, which it exfiltrates from browsers, messaging apps, and other software. The malware is equipped with advanced features, including fingerprinting, control panel, evasion mechanisms, string obfuscation, etc. Stealc establishes persistence and communicates with its C2 server through HTTP POST requests. Stealc ist eine Stealer-Malware, die es auf die sensiblen Daten der Opfer abgesehen hat, die sie aus Browsern, Messaging-Apps und anderer Software exfiltriert. Die Malware ist mit fortschrittlichen Funktionen ausgestattet, darunter Fingerprinting, Bedienfeld, Umgehungsmechanismen, String-Verschleierung usw. Stealc stellt eine Persistenz her und kommuniziert mit seinem C2-Server über HTTP-POST-Anfragen. Stealers are a group of malicious software that are intended for gaining unauthorized access to users’ information and transferring it to the attacker. The stealer malware category includes various types of programs that focus on their particular kind of data, including files, passwords, and cryptocurrency. Stealers are capable of spying on their targets by recording their keystrokes and taking screenshots. This type of malware is primarily distributed as part of phishing campaigns. Malware Trends Tracker >>>
Analysis date:	September 03, 2025, 16:10:38
OS:	Windows 10 Professional (build: 19044, 64 bit)
Tags:	stealc stealer
Indicators:
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32 executable (GUI) Intel 80386, for MS Windows, 4 sections
MD5:	04D39EAC1B5F7CDF1BF48FE31073F1A8
SHA1:	2F8CD1C64AC352DFD4100B4EF43ECFF1252656D8
SHA256:	A16A269613B2FBA53277BDF23CEE4DFB87754329437A7EA468CF4FE8EF656B09
SSDEEP:	6144:ENrKivwkYLGss0HfMKuBPubybrDVwamZblsSnQfBxjp+IV/VFUg1YqwVVHbfb:+t4kYL8WMKYPuMHp1V/V+VVHbfb

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 (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
- STEALC has been detected
  - a16a269613b2fba53277bdf23cee4dfb87754329437a7ea468cf4fe8ef656b09.exe (PID: 4648)
- STEALC mutex has been found
  - a16a269613b2fba53277bdf23cee4dfb87754329437a7ea468cf4fe8ef656b09.exe (PID: 4648)
SUSPICIOUS
- Windows Defender mutex has been found
  - a16a269613b2fba53277bdf23cee4dfb87754329437a7ea468cf4fe8ef656b09.exe (PID: 4648)
- Executes application which crashes
  - a16a269613b2fba53277bdf23cee4dfb87754329437a7ea468cf4fe8ef656b09.exe (PID: 4648)
INFO
- Reads the computer name
  - a16a269613b2fba53277bdf23cee4dfb87754329437a7ea468cf4fe8ef656b09.exe (PID: 4648)
- Checks supported languages
  - a16a269613b2fba53277bdf23cee4dfb87754329437a7ea468cf4fe8ef656b09.exe (PID: 4648)
- Checks proxy server information
  - WerFault.exe (PID: 1100)
- Creates files or folders in the user directory
  - WerFault.exe (PID: 1100)
- Reads the software policy settings
  - WerFault.exe (PID: 1100)

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	\|	InstallShield setup (36.8)
.exe	\|	Win32 Executable MS Visual C++ (generic) (26.6)
.exe	\|	Win64 Executable (generic) (23.6)
.dll	\|	Win32 Dynamic Link Library (generic) (5.6)
.exe	\|	Win32 Executable (generic) (3.8)

EXIF

EXE

MachineType:	Intel 386 or later, and compatibles
TimeStamp:	2023:01:20 16:51:51+00:00
ImageFileCharacteristics:	No relocs, Executable, 32-bit
PEType:	PE32
LinkerVersion:	9
CodeSize:	41984
InitializedDataSize:	42079232
UninitializedDataSize:	-
EntryPoint:	0x1941
OSVersion:	5
ImageVersion:	-
SubsystemVersion:	5
Subsystem:	Windows GUI
FileVersionNumber:	75.0.0.0
ProductVersionNumber:	30.0.0.0
FileFlagsMask:	0x003f
FileFlags:	Debug, Pre-release, Patched, Private build, Special build
FileOS:	Windows NT 32-bit
ObjectFileType:	Executable application
FileSubtype:	-

No data.

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All screenshots are available in the full report

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Total processes

140

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

1100

C:\WINDOWS\SysWOW64\WerFault.exe -u -p 4648 -s 380

C:\Windows\SysWOW64\WerFault.exe

a16a269613b2fba53277bdf23cee4dfb87754329437a7ea468cf4fe8ef656b09.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Windows Problem Reporting

Exit code:

Version:

10.0.19041.3996 (WinBuild.160101.0800)

Modules

Images
c:\windows\syswow64\werfault.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\msvcrt.dll
c:\windows\syswow64\combase.dll

1508

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

4648

"C:\Users\admin\AppData\Local\Temp\a16a269613b2fba53277bdf23cee4dfb87754329437a7ea468cf4fe8ef656b09.exe"

C:\Users\admin\AppData\Local\Temp\a16a269613b2fba53277bdf23cee4dfb87754329437a7ea468cf4fe8ef656b09.exe

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

3221225621

Modules

Images
c:\users\admin\appdata\local\temp\a16a269613b2fba53277bdf23cee4dfb87754329437a7ea468cf4fe8ef656b09.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\msimg32.dll

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Total events

3 561

Read events

3 561

Write events

Delete events

Modification events

No data

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
1100	WerFault.exe	C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_a16a269613b2fba5_35346c93950df9b47c16bcf4e4086cb83b0242_5c6ae9f4_1bdedb05-44d2-4317-b066-7297e8bff10b\Report.wer		—
		MD5:—	SHA256:—
1100	WerFault.exe	C:\ProgramData\Microsoft\Windows\WER\Temp\WERCB4A.tmp.dmp		binary
		MD5:753B1A8523187C6497CD476FBC31A290	SHA256:463D91BB72EE74E9A83A426AEA1CD5119F9C0FFE2B580C7F0A5CD11635079BB0
1100	WerFault.exe	C:\ProgramData\Microsoft\Windows\WER\Temp\WERCBC9.tmp.xml		xml
		MD5:5935BDB8B84BC2E20EB2DE47F045987D	SHA256:0C4BB8856C989B766DD2365EBE9E39CD54CA55E73962898374376C7535683C97
1100	WerFault.exe	C:\ProgramData\Microsoft\Windows\WER\Temp\WERCB89.tmp.WERInternalMetadata.xml		xml
		MD5:3E09A68C3B7C7B0BD179ABAB5837D689	SHA256:1E98C335570BE73DD42E3056E721DBA7DB4B9186D36AA0301729703A741C3F8E
1100	WerFault.exe	C:\Users\admin\AppData\Local\CrashDumps\a16a269613b2fba53277bdf23cee4dfb87754329437a7ea468cf4fe8ef656b09.exe.4648.dmp		—
		MD5:3DA19CEE0EA2380DB48C76EB38D088C3	SHA256:3166D6E284E76EE244662F2632C6CB5F8A780555EAB2EFE26A8FCDFB8A864D79
1100	WerFault.exe	C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\21253908F3CB05D51B1C2DA8B681A785		binary
		MD5:D310523737A0D4D05066857AC157F458	SHA256:0A0520D498306689AFA3CAC09ACE82E09229108FC9FABA5A906291D077004484
1100	WerFault.exe	C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\21253908F3CB05D51B1C2DA8B681A785		binary
		MD5:FE857AB4082A3BBC9A0AE0B5748F68B3	SHA256:D30B2EA3D1ADD2B6059D843B0C93D8942B55A75DF2F04F1EF7D44FF069616E42
1100	WerFault.exe	C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\37C951188967C8EB88D99893D9D191FE		binary
		MD5:399B8A260A3FE6BB6F2D2DAE89FB82BB	SHA256:0DC7CEC07635BC159BA8B7FB1D7FC9AA00DE1C0C045BD688351878B65EAFF57B
1100	WerFault.exe	C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\37C951188967C8EB88D99893D9D191FE		binary
		MD5:0E8B4880ED276C96ED0BF4851A1429E3	SHA256:A75FDD8ADC2636F6B0D1431C5308B42BCAAB04F89D528F5B0EA516825A7D203D

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
1268	svchost.exe	GET	200	104.103.72.96:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	AT	binary	825 b	whitelisted
1100	WerFault.exe	GET	200	104.103.72.96:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	AT	binary	825 b	whitelisted
1100	WerFault.exe	GET	200	88.221.169.152:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	DE	binary	814 b	whitelisted
1268	svchost.exe	GET	200	88.221.169.152:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	DE	binary	814 b	whitelisted
2528	svchost.exe	GET	200	23.39.28.44:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	US	binary	471 b	whitelisted
4684	SIHClient.exe	GET	200	2.17.245.133:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl	NL	binary	407 b	whitelisted
4684	SIHClient.exe	GET	200	2.17.245.133:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl	NL	binary	419 b	whitelisted

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Connections

PID	Process	IP	Domain	ASN	CN	Reputation
5944	MoUsoCoreWorker.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
1268	svchost.exe	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
4836	RUXIMICS.exe	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
1100	WerFault.exe	135.233.45.222:443	watson.events.data.microsoft.com	LUCENT-CIO	US	whitelisted
1100	WerFault.exe	104.103.72.96:80	crl.microsoft.com	Akamai International B.V.	AT	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
1100	WerFault.exe	88.221.169.152:80	www.microsoft.com	AKAMAI-AS	DE	whitelisted
2528	svchost.exe	40.126.31.131:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
2528	svchost.exe	23.39.28.44:80	ocsp.digicert.com	AKAMAI-AS	US	whitelisted

DNS requests

Domain	IP	Reputation
settings-win.data.microsoft.com	51.104.136.2 51.124.78.146	whitelisted
google.com	172.217.18.14	whitelisted
watson.events.data.microsoft.com	135.233.45.222	whitelisted
crl.microsoft.com	104.103.72.96 2.23.154.57	whitelisted
www.microsoft.com	88.221.169.152 2.17.245.133	whitelisted
login.live.com	40.126.31.131 20.190.159.71 40.126.31.2 40.126.31.69 20.190.159.128 20.190.159.0 20.190.159.4 40.126.31.1	whitelisted
ocsp.digicert.com	23.39.28.44	whitelisted
slscr.update.microsoft.com	20.165.94.63	whitelisted
fe3cr.delivery.mp.microsoft.com	20.242.39.171	whitelisted
self.events.data.microsoft.com	52.182.143.214	whitelisted

Threats

No threats detected

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No debug info

General Info

a16a269613b2fba53277bdf23cee4dfb87754329437a7ea468cf4fe8ef656b09

04D39EAC1B5F7CDF1BF48FE31073F1A8

2F8CD1C64AC352DFD4100B4EF43ECFF1252656D8

A16A269613B2FBA53277BDF23CEE4DFB87754329437A7EA468CF4FE8EF656B09

6144:ENrKivwkYLGss0HfMKuBPubybrDVwamZblsSnQfBxjp+IV/VFUg1YqwVVHbfb:+t4kYL8WMKYPuMHp1V/V+VVHbfb

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

STEALC has been detected

STEALC mutex has been found

SUSPICIOUS

Windows Defender mutex has been found

Executes application which crashes

INFO

Reads the computer name

Checks supported languages

Checks proxy server information

Creates files or folders in the user directory

Reads the software policy settings

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