Malware analysis yamlloadobf.exe Malicious activity | ANY.RUN

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File name:	yamlloadobf.exe
Full analysis:	https://app.any.run/tasks/5d0ff0cf-51a3-4c07-aeed-4e32dd6db802
Verdict:	Malicious activity
Analysis date:	March 24, 2025, 10:10:36
OS:	Windows 10 Professional (build: 19044, 64 bit)
Tags:	python
Indicators:
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32+ executable (GUI) x86-64, for MS Windows, 6 sections
MD5:	1C10AD4521E5FB61B926F6185E3CA374
SHA1:	1BD4D7984279943731B6C46E50C8809470AC3DC0
SHA256:	4B3408970E43EF513F0B0F20B86DF10EADDED7537153A5F7A1928CB17C8EAE0E
SSDEEP:	98304:kJ37WTsuDacbtDjHk9IRQJ+FgLHIcc1Umb1f83qgL/v1D0WRBUBY+E+b5dUJRw2l:d2OaZ2YBAHzcuXACN

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
- Creates a new folder (SCRIPT)
  - wscript.exe (PID: 672)
SUSPICIOUS
- Process drops python dynamic module
  - yamlloadobf.exe (PID: 1532)
- Process drops legitimate windows executable
  - yamlloadobf.exe (PID: 1532)
- Application launched itself
  - yamlloadobf.exe (PID: 1532)
- Executable content was dropped or overwritten
  - yamlloadobf.exe (PID: 1532)
- Creates FileSystem object to access computer's file system (SCRIPT)
  - wscript.exe (PID: 672)
- The process drops C-runtime libraries
  - yamlloadobf.exe (PID: 1532)
- Loads Python modules
  - yamlloadobf.exe (PID: 6388)
- The process executes VB scripts
  - yamlloadobf.exe (PID: 6388)
- Runs shell command (SCRIPT)
  - wscript.exe (PID: 672)
- Writes binary data to a Stream object (SCRIPT)
  - wscript.exe (PID: 672)
- Potential Corporate Privacy Violation
  - yamlloadobf.exe (PID: 6388)
INFO
- The sample compiled with english language support
  - yamlloadobf.exe (PID: 1532)
- Reads the computer name
  - yamlloadobf.exe (PID: 1532)
- Checks supported languages
  - yamlloadobf.exe (PID: 1532)
- Create files in a temporary directory
  - yamlloadobf.exe (PID: 1532)
- Creates files or folders in the user directory
  - BackgroundTransferHost.exe (PID: 5868)
- Reads security settings of Internet Explorer
  - BackgroundTransferHost.exe (PID: 5332)
- Manual execution by a user
  - Taskmgr.exe (PID: 6032)
  - Taskmgr.exe (PID: 4112)

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 (57.6)
.exe	\|	Win64 Executable (generic) (36.9)
.exe	\|	Generic Win/DOS Executable (2.6)
.exe	\|	DOS Executable Generic (2.6)

EXIF

EXE

MachineType:	AMD AMD64
TimeStamp:	2025:03:24 01:36:44+00:00
ImageFileCharacteristics:	Executable, Large address aware
PEType:	PE32+
LinkerVersion:	14.41
CodeSize:	172032
InitializedDataSize:	154624
UninitializedDataSize:	-
EntryPoint:	0xce20
OSVersion:	6
ImageVersion:	-
SubsystemVersion:	6
Subsystem:	Windows GUI

No data.

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All screenshots are available in the full report

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Total processes

141

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

672

wscript hidden.vbs

C:\Windows\System32\wscript.exe

—

yamlloadobf.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Microsoft ® Windows Based Script Host

Exit code:

Version:

5.812.10240.16384

Modules

Images
c:\windows\system32\wscript.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\oleaut32.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\combase.dll

904

"BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1

C:\Windows\System32\BackgroundTransferHost.exe

—

svchost.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Download/Upload Host

Exit code:

Version:

10.0.19041.3636 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\backgroundtransferhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\kernel.appcore.dll
c:\windows\system32\bcryptprimitives.dll

1300

"C:\WINDOWS\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca

C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe

—

svchost.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Windows Shell Experience Host

Version:

10.0.19041.3758 (WinBuild.160101.0800)

Modules

Images
c:\windows\systemapps\shellexperiencehost_cw5n1h2txyewy\shellexperiencehost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\oleaut32.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\dxgi.dll

1532

"C:\Users\admin\Desktop\yamlloadobf.exe"

C:\Users\admin\Desktop\yamlloadobf.exe

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

Modules

Images
c:\users\admin\desktop\yamlloadobf.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\apphelp.dll
c:\windows\system32\user32.dll
c:\windows\system32\win32u.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\gdi32full.dll
c:\windows\system32\msvcp_win.dll

3008

"BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1

C:\Windows\System32\BackgroundTransferHost.exe

—

svchost.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Download/Upload Host

Exit code:

Version:

10.0.19041.3636 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\backgroundtransferhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\kernel.appcore.dll
c:\windows\system32\bcryptprimitives.dll

4112

"C:\WINDOWS\system32\taskmgr.exe" /4

C:\Windows\System32\Taskmgr.exe

explorer.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

HIGH

Description:

Task Manager

Exit code:

Version:

10.0.19041.3636 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\taskmgr.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\oleaut32.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\powrprof.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\combase.dll

4628

"BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1

C:\Windows\System32\BackgroundTransferHost.exe

—

svchost.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Download/Upload Host

Exit code:

Version:

10.0.19041.3636 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\backgroundtransferhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\kernel.appcore.dll
c:\windows\system32\bcryptprimitives.dll

5164

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

5332

"BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1

C:\Windows\System32\BackgroundTransferHost.exe

—

svchost.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Download/Upload Host

Exit code:

Version:

10.0.19041.3636 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\backgroundtransferhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\kernel.appcore.dll
c:\windows\system32\bcryptprimitives.dll

5868

"BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1

C:\Windows\System32\BackgroundTransferHost.exe

svchost.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Download/Upload Host

Exit code:

Version:

10.0.19041.3636 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\backgroundtransferhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\kernel.appcore.dll
c:\windows\system32\bcryptprimitives.dll

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Total events

5 325

Read events

5 297

Write events

Delete events

Modification events


(PID) Process:	(904) BackgroundTransferHost.exe	Key:	HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\Content
Operation:	write	Name:	CachePrefix
Value:
(PID) Process:	(904) BackgroundTransferHost.exe	Key:	HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\Cookies
Operation:	write	Name:	CachePrefix
Value: Cookie:
(PID) Process:	(904) BackgroundTransferHost.exe	Key:	HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\History
Operation:	write	Name:	CachePrefix
Value: Visited:
(PID) Process:	(5868) BackgroundTransferHost.exe	Key:	HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\Content
Operation:	write	Name:	CachePrefix
Value:
(PID) Process:	(5868) BackgroundTransferHost.exe	Key:	HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\Cookies
Operation:	write	Name:	CachePrefix
Value: Cookie:
(PID) Process:	(5868) BackgroundTransferHost.exe	Key:	HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\History
Operation:	write	Name:	CachePrefix
Value: Visited:
(PID) Process:	(3008) BackgroundTransferHost.exe	Key:	HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\Content
Operation:	write	Name:	CachePrefix
Value:
(PID) Process:	(3008) BackgroundTransferHost.exe	Key:	HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\Cookies
Operation:	write	Name:	CachePrefix
Value: Cookie:
(PID) Process:	(3008) BackgroundTransferHost.exe	Key:	HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\History
Operation:	write	Name:	CachePrefix
Value: Visited:
(PID) Process:	(5332) BackgroundTransferHost.exe	Key:	HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoft.windows.contentdeliverymanager_cw5n1h2txyewy\Internet Settings\Cache\Content
Operation:	write	Name:	CachePrefix
Value:

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
1532	yamlloadobf.exe	C:\Users\admin\AppData\Local\Temp\_MEI15322\api-ms-win-core-console-l1-1-0.dll		executable
		MD5:9313C86E7BAE859F0174A1C8B6ABA58B	SHA256:AF9675AC90BAE8A0D8623F6FDAFF9D39E1B8810E8E46A5B044BAAA3396E745B3
1532	yamlloadobf.exe	C:\Users\admin\AppData\Local\Temp\_MEI15322\_queue.pyd		executable
		MD5:F00133F7758627A15F2D98C034CF1657	SHA256:35609869EDC57D806925EC52CCA9BC5A035E30D5F40549647D4DA6D7983F8659
1532	yamlloadobf.exe	C:\Users\admin\AppData\Local\Temp\_MEI15322\_socket.pyd		executable
		MD5:1EEA9568D6FDEF29B9963783827F5867	SHA256:74181072392A3727049EA3681FE9E59516373809CED53E08F6DA7C496B76E117
1532	yamlloadobf.exe	C:\Users\admin\AppData\Local\Temp\_MEI15322\_decimal.pyd		executable
		MD5:65B4AB77D6C6231C145D3E20E7073F51	SHA256:93EB9D1859EDCA1C29594491863BF3D72AF70B9A4240E0D9DD171F668F4F8614
1532	yamlloadobf.exe	C:\Users\admin\AppData\Local\Temp\_MEI15322\_ssl.pyd		executable
		MD5:208B0108172E59542260934A2E7CFA85	SHA256:5160500474EC95D4F3AF7E467CC70CB37BEC1D12545F0299AAB6D69CEA106C69
1532	yamlloadobf.exe	C:\Users\admin\AppData\Local\Temp\_MEI15322\_lzma.pyd		executable
		MD5:E5ABC3A72996F8FDE0BCF709E6577D9D	SHA256:1796038480754A680F33A4E37C8B5673CC86C49281A287DC0C5CAE984D0CB4BB
1532	yamlloadobf.exe	C:\Users\admin\AppData\Local\Temp\_MEI15322\api-ms-win-core-file-l1-2-0.dll		executable
		MD5:4A060EEC454C222A5381CD359DC00B81	SHA256:E6B2B05E14A6C6F5381E8F4C7F4FD28A499246FB4C8EAFE1F08014B9273D70DF
1532	yamlloadobf.exe	C:\Users\admin\AppData\Local\Temp\_MEI15322\api-ms-win-core-errorhandling-l1-1-0.dll		executable
		MD5:12EA48CE605EBB204A21AE7D86DB3417	SHA256:189BBBD739526A986E53518865E741CDE8C5967AACD5ED687408CEC3D8781F1C
1532	yamlloadobf.exe	C:\Users\admin\AppData\Local\Temp\_MEI15322\api-ms-win-core-file-l1-1-0.dll		executable
		MD5:4B328F140A3AE7FEDB21CA50CC23D938	SHA256:E55B200643E8B078E7F5EB0C97DE44FEAD21B11D06590EBEDBCB84214D063345
1532	yamlloadobf.exe	C:\Users\admin\AppData\Local\Temp\_MEI15322\api-ms-win-core-datetime-l1-1-0.dll		executable
		MD5:854458AD55C39A9DFD1E350A51BE02B8	SHA256:F918B0C45F59B2CB29F1EB3653D2F2679095E85E082A1198C933A76EDF1F33EF

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	23.53.41.90:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	unknown	—	—	whitelisted
—	—	GET	200	23.53.41.90:80	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
6388	yamlloadobf.exe	GET	200	194.197.245.5:80	http://194.197.245.5/tiev21p/juuso/payloads.yaml	unknown	—	—	unknown
5164	backgroundTaskHost.exe	GET	200	184.30.131.245:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%3D	unknown	—	—	whitelisted
5868	BackgroundTransferHost.exe	GET	200	184.30.131.245:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D	unknown	—	—	whitelisted
6668	SIHClient.exe	GET	200	2.23.246.101:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl	unknown	—	—	whitelisted
6668	SIHClient.exe	GET	200	2.23.246.101:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl	unknown	—	—	whitelisted

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Connections

PID	Process	IP	Domain	ASN	CN	Reputation
4	System	192.168.100.255:138	—	—	—	whitelisted
—	—	23.53.41.90:80	—	Akamai International B.V.	DE	unknown
—	—	40.127.240.158:443	—	MICROSOFT-CORP-MSN-AS-BLOCK	IE	unknown
3216	svchost.exe	40.115.3.253:443	client.wns.windows.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
6544	svchost.exe	20.190.159.68:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
6544	svchost.exe	184.30.131.245:80	ocsp.digicert.com	AKAMAI-AS	US	whitelisted
6388	yamlloadobf.exe	194.197.245.5:80	—	Telia Finland Oyj	FI	unknown
2104	svchost.exe	51.124.78.146:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
5164	backgroundTaskHost.exe	20.74.47.205:443	arc.msn.com	MICROSOFT-CORP-MSN-AS-BLOCK	FR	whitelisted
5164	backgroundTaskHost.exe	184.30.131.245:80	ocsp.digicert.com	AKAMAI-AS	US	whitelisted

DNS requests

Domain	IP	Reputation
client.wns.windows.com	40.115.3.253	whitelisted
login.live.com	20.190.159.68 40.126.31.131 40.126.31.73 20.190.159.0 40.126.31.67 20.190.159.4 40.126.31.129 20.190.159.130	whitelisted
ocsp.digicert.com	184.30.131.245	whitelisted
settings-win.data.microsoft.com	51.124.78.146	whitelisted
arc.msn.com	20.74.47.205	whitelisted
www.bing.com	104.126.37.130 104.126.37.178 104.126.37.131 104.126.37.144 104.126.37.128 104.126.37.123 104.126.37.186 104.126.37.139 104.126.37.184	whitelisted
slscr.update.microsoft.com	4.175.87.197	whitelisted
www.microsoft.com	2.23.246.101	whitelisted
fe3cr.delivery.mp.microsoft.com	20.242.39.171	whitelisted
activation-v2.sls.microsoft.com	40.91.76.224	whitelisted

Threats

PID	Process	Class	Message
6388	yamlloadobf.exe	Potential Corporate Privacy Violation	POLICY [ANY.RUN] Python Suspicious User Agent
6388	yamlloadobf.exe	A Network Trojan was detected	SUSPICIOUS [ANY.RUN] VBS is used to run Shell

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No debug info

General Info

yamlloadobf.exe

1C10AD4521E5FB61B926F6185E3CA374

1BD4D7984279943731B6C46E50C8809470AC3DC0

4B3408970E43EF513F0B0F20B86DF10EADDED7537153A5F7A1928CB17C8EAE0E

98304:kJ37WTsuDacbtDjHk9IRQJ+FgLHIcc1Umb1f83qgL/v1D0WRBUBY+E+b5dUJRw2l:d2OaZ2YBAHzcuXACN

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Creates a new folder (SCRIPT)

SUSPICIOUS

Process drops python dynamic module

Process drops legitimate windows executable

Application launched itself

Executable content was dropped or overwritten

Creates FileSystem object to access computer's file system (SCRIPT)

The process drops C-runtime libraries

Loads Python modules

The process executes VB scripts

Runs shell command (SCRIPT)

Writes binary data to a Stream object (SCRIPT)

Potential Corporate Privacy Violation

INFO

The sample compiled with english language support

Reads the computer name

Checks supported languages

Create files in a temporary directory

Creates files or folders in the user directory

Reads security settings of Internet Explorer

Manual execution by a user

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