Malware analysis 1a102b793f4cad2e1bffc0a7e25ffd3601744a616d19f7f5dbd57c8a116538b3 Malicious activity

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File name:	1a102b793f4cad2e1bffc0a7e25ffd3601744a616d19f7f5dbd57c8a116538b3
Full analysis:	https://app.any.run/tasks/bbd19aaf-f2e0-4968-a745-25323745c7a8
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, 16:47:28
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:	D8DF2134FCCE8D076018D83B8644E650
SHA1:	5879598CA665DFFDCCF77FBE68ABCA0D37F8E12A
SHA256:	1A102B793F4CAD2E1BFFC0A7E25FFD3601744A616D19F7F5DBD57C8A116538B3
SSDEEP:	6144:eOfp9GYYthpE+R39PhVNPvZpsXt1mexXSfNYV9ekDmaZh0Q00NzJVFVMVlV:ZhDYHhJhPPv/sXqqzJVFVMVlV

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
  - 1a102b793f4cad2e1bffc0a7e25ffd3601744a616d19f7f5dbd57c8a116538b3.exe (PID: 4648)
- STEALC mutex has been found
  - 1a102b793f4cad2e1bffc0a7e25ffd3601744a616d19f7f5dbd57c8a116538b3.exe (PID: 4648)
SUSPICIOUS
- Windows Defender mutex has been found
  - 1a102b793f4cad2e1bffc0a7e25ffd3601744a616d19f7f5dbd57c8a116538b3.exe (PID: 4648)
- Executes application which crashes
  - 1a102b793f4cad2e1bffc0a7e25ffd3601744a616d19f7f5dbd57c8a116538b3.exe (PID: 4648)
INFO
- Reads the computer name
  - 1a102b793f4cad2e1bffc0a7e25ffd3601744a616d19f7f5dbd57c8a116538b3.exe (PID: 4648)
- Checks supported languages
  - 1a102b793f4cad2e1bffc0a7e25ffd3601744a616d19f7f5dbd57c8a116538b3.exe (PID: 4648)
- Creates files or folders in the user directory
  - WerFault.exe (PID: 2276)
- Checks proxy server information
  - WerFault.exe (PID: 2276)
- Reads the software policy settings
  - WerFault.exe (PID: 2276)

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 (generic) (52.9)
.exe	\|	Generic Win/DOS Executable (23.5)
.exe	\|	DOS Executable Generic (23.5)

EXIF

EXE

MachineType:	Intel 386 or later, and compatibles
TimeStamp:	2022:10:30 05:20:46+00:00
ImageFileCharacteristics:	No relocs, Executable, 32-bit
PEType:	PE32
LinkerVersion:	9
CodeSize:	42496
InitializedDataSize:	42076672
UninitializedDataSize:	-
EntryPoint:	0x15b0
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

2276

C:\WINDOWS\SysWOW64\WerFault.exe -u -p 4648 -s 384

C:\Windows\SysWOW64\WerFault.exe

1a102b793f4cad2e1bffc0a7e25ffd3601744a616d19f7f5dbd57c8a116538b3.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

4648

"C:\Users\admin\AppData\Local\Temp\1a102b793f4cad2e1bffc0a7e25ffd3601744a616d19f7f5dbd57c8a116538b3.exe"

C:\Users\admin\AppData\Local\Temp\1a102b793f4cad2e1bffc0a7e25ffd3601744a616d19f7f5dbd57c8a116538b3.exe

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

3221225477

Modules

Images
c:\users\admin\appdata\local\temp\1a102b793f4cad2e1bffc0a7e25ffd3601744a616d19f7f5dbd57c8a116538b3.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

6388

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

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Total events

3 317

Read events

3 317

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
2276	WerFault.exe	C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_1a102b793f4cad2e_768cb72df7aaaccc31547b4b4e590c032bc41d_5b135268_5e48ca96-a952-479c-a12a-1b7fbaed04fe\Report.wer		—
		MD5:—	SHA256:—
2276	WerFault.exe	C:\ProgramData\Microsoft\Windows\WER\Temp\WERCFDF.tmp.WERInternalMetadata.xml		xml
		MD5:D33F97D3EB491AEDDC3918BE11A73A71	SHA256:0F6055CF8D180C4D44FA0FC7B9A35DAFA939898AAA6AD8BC37391A86A9942955
2276	WerFault.exe	C:\ProgramData\Microsoft\Windows\WER\Temp\WERCF90.tmp.dmp		binary
		MD5:8A4FFC163042749856C860E26A949EE9	SHA256:BB6D7B5E6E3CB92DE917660A1128EA8092BF4AF0680B549DB0D5C4FBECBBE288
2276	WerFault.exe	C:\ProgramData\Microsoft\Windows\WER\Temp\WERCFFF.tmp.xml		xml
		MD5:D77EC0CB98AB3355C50ABDDCB2730EE9	SHA256:B875B45DBA88E88AB338D244DCBE2EDEDE76092DA4CAF4BF9ACFFAB8230BE0E0
2276	WerFault.exe	C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\37C951188967C8EB88D99893D9D191FE		binary
		MD5:399B8A260A3FE6BB6F2D2DAE89FB82BB	SHA256:0DC7CEC07635BC159BA8B7FB1D7FC9AA00DE1C0C045BD688351878B65EAFF57B
2276	WerFault.exe	C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\21253908F3CB05D51B1C2DA8B681A785		binary
		MD5:D310523737A0D4D05066857AC157F458	SHA256:0A0520D498306689AFA3CAC09ACE82E09229108FC9FABA5A906291D077004484
2276	WerFault.exe	C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\37C951188967C8EB88D99893D9D191FE		binary
		MD5:F279AADC1AEB7E9D598CA06F3470598C	SHA256:7C919140B5AEA86ACA06371FCDEF9E411D22B3B0863EB742760AB5A3EFB34883
2276	WerFault.exe	C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\21253908F3CB05D51B1C2DA8B681A785		binary
		MD5:FB35DED699D726F2DFDF559BF4DAB4DC	SHA256:8F9DF77DD438F371C631FC01597493C3294414C01123C6F6E9590ACFB378E481
2276	WerFault.exe	C:\Users\admin\AppData\Local\CrashDumps\1a102b793f4cad2e1bffc0a7e25ffd3601744a616d19f7f5dbd57c8a116538b3.exe.4648.dmp		binary
		MD5:72F85223F444B94334A513FAEBC8EA7E	SHA256:19E644A1698958CBDD5E5E270DE9E79BA613A104AB34BC6601F25921F6445B82

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
2276	WerFault.exe	GET	200	2.17.251.99:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	NL	binary	825 b	whitelisted
2276	WerFault.exe	GET	200	23.200.197.152:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	US	binary	814 b	whitelisted
1268	svchost.exe	GET	200	23.200.197.152:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	US	binary	814 b	whitelisted
3644	svchost.exe	GET	200	23.203.176.221:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	US	binary	471 b	whitelisted
1268	svchost.exe	GET	200	2.17.251.99:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	NL	binary	825 b	whitelisted
4664	SIHClient.exe	GET	200	23.200.197.152:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl	US	binary	419 b	whitelisted
4664	SIHClient.exe	GET	200	23.200.197.152:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl	US	binary	407 b	whitelisted

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Connections

PID	Process	IP	Domain	ASN	CN	Reputation
5944	MoUsoCoreWorker.exe	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
4	System	192.168.100.255:137	—	—	—	whitelisted
1268	svchost.exe	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
3480	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
2276	WerFault.exe	135.234.160.244:443	watson.events.data.microsoft.com	LUCENT-CIO	US	whitelisted
2276	WerFault.exe	2.17.251.99:80	crl.microsoft.com	Akamai International B.V.	NL	whitelisted
2276	WerFault.exe	23.200.197.152:80	www.microsoft.com	AKAMAI-AS	US	whitelisted
3644	svchost.exe	20.190.159.64:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
3644	svchost.exe	23.203.176.221:80	ocsp.digicert.com	AKAMAI-AS	US	whitelisted

DNS requests

Domain	IP	Reputation
settings-win.data.microsoft.com	40.127.240.158 51.104.136.2	whitelisted
google.com	216.58.206.46	whitelisted
watson.events.data.microsoft.com	135.234.160.244	whitelisted
crl.microsoft.com	2.17.251.99 2.17.251.116	whitelisted
www.microsoft.com	23.200.197.152	whitelisted
login.live.com	20.190.159.64 20.190.159.71 40.126.31.3 20.190.159.68 20.190.159.4 40.126.31.67 40.126.31.2 20.190.159.129	whitelisted
ocsp.digicert.com	23.203.176.221	whitelisted
slscr.update.microsoft.com	135.233.95.144	whitelisted
fe3cr.delivery.mp.microsoft.com	20.3.187.198	whitelisted
self.events.data.microsoft.com	104.208.16.91	whitelisted

Threats

No threats detected

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No debug info

General Info

1a102b793f4cad2e1bffc0a7e25ffd3601744a616d19f7f5dbd57c8a116538b3

D8DF2134FCCE8D076018D83B8644E650

5879598CA665DFFDCCF77FBE68ABCA0D37F8E12A

1A102B793F4CAD2E1BFFC0A7E25FFD3601744A616D19F7F5DBD57C8A116538B3

6144:eOfp9GYYthpE+R39PhVNPvZpsXt1mexXSfNYV9ekDmaZh0Q00NzJVFVMVlV:ZhDYHhJhPPv/sXqqzJVFVMVlV

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

Creates files or folders in the user directory

Checks proxy server information

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