Malware analysis b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767 Malicious activity

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File name:	b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767
Full analysis:	https://app.any.run/tasks/334bca08-7ceb-48fe-a59a-11220a45298b
Verdict:	Malicious activity
Analysis date:	April 29, 2025, 17:30:26
OS:	Windows 10 Professional (build: 19044, 64 bit)
Tags:	tofsee
Indicators:
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32 executable (GUI) Intel 80386, for MS Windows, 7 sections
MD5:	21F11993245F70AEEE18C5E757F412C2
SHA1:	B34631B403149FBCBFCED63A9F8240ADCFE7A5F9
SHA256:	B81F046EF6C173286DC451B9336880767C159F744989840A909A117C2793F767
SSDEEP:	49152:6LRaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaai:6

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
- Changes the autorun value in the registry
  - b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe (PID: 6620)
- TOFSEE has been detected (YARA)
  - svchost.exe (PID: 6728)
SUSPICIOUS
- Executable content was dropped or overwritten
  - b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe (PID: 6620)
- Reads security settings of Internet Explorer
  - b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe (PID: 6620)
- Executes application which crashes
  - b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe (PID: 6620)
  - fncgtraa.exe (PID: 4696)
- Detected use of alternative data streams (AltDS)
  - svchost.exe (PID: 6728)
- Connects to SMTP port
  - svchost.exe (PID: 6728)
INFO
- Reads the computer name
  - b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe (PID: 6620)
  - fncgtraa.exe (PID: 4696)
- Checks supported languages
  - b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe (PID: 6620)
  - fncgtraa.exe (PID: 4696)
- Create files in a temporary directory
  - b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe (PID: 6620)
- Process checks computer location settings
  - b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe (PID: 6620)

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) (64.6)
.dll	\|	Win32 Dynamic Link Library (generic) (15.4)
.exe	\|	Win32 Executable (generic) (10.5)
.exe	\|	Generic Win/DOS Executable (4.6)
.exe	\|	DOS Executable Generic (4.6)

EXIF

EXE

MachineType:	Intel 386 or later, and compatibles
TimeStamp:	2019:02:17 15:16:32+00:00
ImageFileCharacteristics:	No relocs, Executable, 32-bit
PEType:	PE32
LinkerVersion:	14
CodeSize:	43520
InitializedDataSize:	156160
UninitializedDataSize:	-
EntryPoint:	0x157e
OSVersion:	5.1
ImageVersion:	-
SubsystemVersion:	5.1
Subsystem:	Windows GUI

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

2196

C:\WINDOWS\system32\svchost.exe -k NetworkService -p -s Dnscache

C:\Windows\System32\svchost.exe

services.exe

User:

NETWORK SERVICE

Company:

Microsoft Corporation

Integrity Level:

SYSTEM

Description:

Host Process for Windows Services

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\svchost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\combase.dll
c:\windows\system32\kernel.appcore.dll

4120

C:\WINDOWS\SysWOW64\WerFault.exe -u -p 6620 -s 768

C:\Windows\SysWOW64\WerFault.exe

—

b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.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

4696

"C:\Users\admin\fncgtraa.exe" /d"C:\Users\admin\AppData\Local\Temp\b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe" /e550302100000007F

C:\Users\admin\fncgtraa.exe

b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

3221225477

Modules

Images
c:\users\admin\fncgtraa.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

5304

"C:\Windows\System32\wusa.exe"

C:\Windows\SysWOW64\wusa.exe

—

b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Windows Update Standalone Installer

Exit code:

3221226540

Version:

10.0.19041.3636 (WinBuild.160101.0800)

Modules

Images
c:\windows\syswow64\wusa.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll

5720

C:\WINDOWS\SysWOW64\WerFault.exe -u -p 4696 -s 584

C:\Windows\SysWOW64\WerFault.exe

—

fncgtraa.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

5892

C:\WINDOWS\system32\SppExtComObj.exe -Embedding

C:\Windows\System32\SppExtComObj.Exe

—

svchost.exe

User:

NETWORK SERVICE

Company:

Microsoft Corporation

Integrity Level:

SYSTEM

Description:

KMS Connection Broker

Version:

10.0.19041.3996 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\sppextcomobj.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\oleaut32.dll

6032

"C:\WINDOWS\System32\SLUI.exe" RuleId=3482d82e-ca2c-4e1f-8864-da0267b484b2;Action=AutoActivate;AppId=55c92734-d682-4d71-983e-d6ec3f16059f;SkuId=4de7cb65-cdf1-4de9-8ae8-e3cce27b9f2c;NotificationInterval=1440;Trigger=TimerEvent

C:\Windows\System32\slui.exe

—

SppExtComObj.Exe

User:

NETWORK SERVICE

Company:

Microsoft Corporation

Integrity Level:

SYSTEM

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

6620

"C:\Users\admin\AppData\Local\Temp\b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe"

C:\Users\admin\AppData\Local\Temp\b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

3221225477

Modules

Images
c:\users\admin\appdata\local\temp\b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.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

6728

svchost.exe

C:\Windows\SysWOW64\svchost.exe

fncgtraa.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Host Process for Windows Services

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\syswow64\svchost.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\ws2_32.dll

6876

"C:\WINDOWS\SysWOW64\wusa.exe"

C:\Windows\SysWOW64\wusa.exe

b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

HIGH

Description:

Windows Update Standalone Installer

Exit code:

Version:

10.0.19041.3636 (WinBuild.160101.0800)

Modules

Images
c:\windows\syswow64\wusa.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

1 581

Read events

1 580

Write events

Delete events

Modification events


(PID) Process:	(6620) b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:	write	Name:	efondphy
Value: "C:\Users\admin\fncgtraa.exe"

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
6620	b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe	C:\Users\admin\fncgtraa.exe		executable
		MD5:E0F0087E7A793429C3C4B56AEEBE593E	SHA256:D3785417CBB2CC2535D51DE9333B3810583D8E4861AE06A0C4CB9D3024A49DAB
6620	b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767.exe	C:\Users\admin\AppData\Local\Temp\mohszhvl.exe		executable
		MD5:6C79E61139B4B2D0F08D85314CD88FDF	SHA256:8B4FFE905F25CEF939B9D4C1CBAA58628A766CCE37478CB300FCAE587369DA39

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
—	—	GET	200	2.23.246.101:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	unknown	—	—	whitelisted
—	—	GET	200	2.16.241.12:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	unknown	—	—	whitelisted
6544	svchost.exe	GET	200	184.30.131.245:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	unknown	—	—	whitelisted
6372	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
6372	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

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
—	—	51.124.78.146:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
—	—	2.16.241.12:80	crl.microsoft.com	Akamai International B.V.	DE	whitelisted
—	—	2.23.246.101:80	www.microsoft.com	Ooredoo Q.S.C.	QA	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
6728	svchost.exe	13.107.246.59:80	microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	US	whitelisted
6728	svchost.exe	52.101.8.46:25	microsoft-com.mail.protection.outlook.com	MICROSOFT-CORP-MSN-AS-BLOCK	US	whitelisted
3216	svchost.exe	172.211.123.249:443	client.wns.windows.com	MICROSOFT-CORP-MSN-AS-BLOCK	FR	whitelisted
6728	svchost.exe	43.231.4.7:443	—	Gigabit Hosting Sdn Bhd	MY	unknown
6544	svchost.exe	40.126.31.3:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted

DNS requests

Domain	IP	Reputation
google.com	142.250.186.78	whitelisted
settings-win.data.microsoft.com	51.124.78.146 4.231.128.59	whitelisted
crl.microsoft.com	2.16.241.12 2.16.241.19	whitelisted
www.microsoft.com	2.23.246.101 184.30.21.171	whitelisted
microsoft.com	13.107.246.59	whitelisted
microsoft-com.mail.protection.outlook.com	52.101.8.46 52.101.41.180 52.101.42.14 52.101.11.9	whitelisted
client.wns.windows.com	172.211.123.249	whitelisted
login.live.com	40.126.31.3 40.126.31.129 40.126.31.130 40.126.31.2 40.126.31.128 20.190.159.71 40.126.31.1 40.126.31.67	whitelisted
ocsp.digicert.com	184.30.131.245	whitelisted
yahoo.com	—	whitelisted

Threats

No threats detected

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No debug info

General Info

b81f046ef6c173286dc451b9336880767c159f744989840a909a117c2793f767

21F11993245F70AEEE18C5E757F412C2

B34631B403149FBCBFCED63A9F8240ADCFE7A5F9

B81F046EF6C173286DC451B9336880767C159F744989840A909A117C2793F767

49152:6LRaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaai:6

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Changes the autorun value in the registry

TOFSEE has been detected (YARA)

SUSPICIOUS

Executable content was dropped or overwritten

Reads security settings of Internet Explorer

Executes application which crashes

Detected use of alternative data streams (AltDS)

Connects to SMTP port

INFO

Reads the computer name

Checks supported languages

Create files in a temporary directory

Process checks computer location settings

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

Modules

Information

Modules

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings