Malware analysis sigma.exe Malicious activity | ANY.RUN

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File name:	sigma.exe
Full analysis:	https://app.any.run/tasks/03882c85-8d38-4d44-a308-3cb248146c37
Verdict:	Malicious activity
Analysis date:	July 09, 2025, 03:37:56
OS:	Windows 10 Professional (build: 19044, 64 bit)
Tags:	python pyinstaller
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32+ executable (GUI) x86-64, for MS Windows, 7 sections
MD5:	9F9FD4BAE7532AA5292F0F2A03724D9C
SHA1:	EC5F1DE108DCB07AB502AB53EB7D7102AC57B3FC
SHA256:	1641C131147AC73D0DB18930C68151A1BC473303B54023D905A93D4F9AE7A292
SSDEEP:	98304:0C3CpAoH5bYok2xumzy72mh+kzK/7ueSnKHdcT6CmbKJytFja9WE/Ns2chWnXZLy:R03JEEThJj

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
No malicious indicators.
SUSPICIOUS
- The process drops C-runtime libraries
  - sigma.exe (PID: 6724)
- Process drops legitimate windows executable
  - sigma.exe (PID: 6724)
- Process drops python dynamic module
  - sigma.exe (PID: 6724)
- Executable content was dropped or overwritten
  - sigma.exe (PID: 6724)
- Application launched itself
  - sigma.exe (PID: 6724)
- Loads Python modules
  - sigma.exe (PID: 6508)
- There is functionality for taking screenshot (YARA)
  - sigma.exe (PID: 6724)
INFO
- The sample compiled with english language support
  - sigma.exe (PID: 6724)
- Checks supported languages
  - sigma.exe (PID: 6724)
  - sigma.exe (PID: 6508)
- Reads the computer name
  - sigma.exe (PID: 6724)
  - sigma.exe (PID: 6508)
- Create files in a temporary directory
  - sigma.exe (PID: 6724)
- PyInstaller has been detected (YARA)
  - sigma.exe (PID: 6724)

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) (87.3)
.exe	\|	Generic Win/DOS Executable (6.3)
.exe	\|	DOS Executable Generic (6.3)

EXIF

EXE

MachineType:	AMD AMD64
TimeStamp:	2025:07:09 00:04:38+00:00
ImageFileCharacteristics:	Executable, Large address aware
PEType:	PE32+
LinkerVersion:	14.43
CodeSize:	174592
InitializedDataSize:	157184
UninitializedDataSize:	-
EntryPoint:	0xd0d0
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

135

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

6508

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

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

—

sigma.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

Modules

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

6724

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

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

—

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

Modules

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

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Total events

Read events

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
6724	sigma.exe	C:\Users\admin\AppData\Local\Temp\_MEI67242\api-ms-win-core-errorhandling-l1-1-0.dll		executable
		MD5:A538B281F8E84CECDAC507C73A43D744	SHA256:45AFAF08D1CD7E43AC5DED47ED5FD708B86E835A9470C81E8130ED6955B84DB8
6724	sigma.exe	C:\Users\admin\AppData\Local\Temp\_MEI67242\api-ms-win-core-console-l1-1-0.dll		executable
		MD5:1BEBD9B65ED18B680F7E39BEF09FE6CE	SHA256:E756F6970905657CF73ECB3F57BAE55A67BE29AFA75AE4D16046B0F7229708EB
6724	sigma.exe	C:\Users\admin\AppData\Local\Temp\_MEI67242\api-ms-win-core-datetime-l1-1-0.dll		executable
		MD5:1DC5B99C16502D75DD924EEDA562461C	SHA256:4E08856FF5203592C27F943F5586D2214B7C5DACDE1B1EF75C2316590AB788C9
6724	sigma.exe	C:\Users\admin\AppData\Local\Temp\_MEI67242\_hashlib.pyd		executable
		MD5:B4FF25B1ACA23D48897FC616E102E9B6	SHA256:87DD0C858620287454FD6D31D52B6A48EDDBB2A08E09E8B2D9FDB0B92200D766
6724	sigma.exe	C:\Users\admin\AppData\Local\Temp\_MEI67242\api-ms-win-core-file-l1-1-0.dll		executable
		MD5:BCC620DCC9A3A9DFD38663A971B7044B	SHA256:F73000652CA7CA7468CA6134663C99CBAF7BD97740BDBDD5D1E1E23CCFD5DB75
6724	sigma.exe	C:\Users\admin\AppData\Local\Temp\_MEI67242\VCRUNTIME140.dll		executable
		MD5:BE8DBE2DC77EBE7F88F910C61AEC691A	SHA256:4D292623516F65C80482081E62D5DADB759DC16E851DE5DB24C3CBB57B87DB83
6724	sigma.exe	C:\Users\admin\AppData\Local\Temp\_MEI67242\api-ms-win-core-debug-l1-1-0.dll		executable
		MD5:7DC2026ABEDAA10841EAE4129EF1A9AE	SHA256:E83D5E5EB772070999F34A214EBFFCF0A6068EBC1C4B4F1991188448F323808D
6724	sigma.exe	C:\Users\admin\AppData\Local\Temp\_MEI67242\_decimal.pyd		executable
		MD5:C88282908BA54510EDA3887C488198EB	SHA256:980A63F2B39CF16910F44384398E25F24482346A482ADDB00DE42555B17D4278
6724	sigma.exe	C:\Users\admin\AppData\Local\Temp\_MEI67242\_socket.pyd		executable
		MD5:B77017BAA2004833EF3847A3A3141280	SHA256:A19E3C7C03EF1B5625790B1C9C42594909311AB6DF540FBF43C6AA93300AB166
6724	sigma.exe	C:\Users\admin\AppData\Local\Temp\_MEI67242\_bz2.pyd		executable
		MD5:AA1083BDE6D21CABFC630A18F51B1926	SHA256:00B8CA9A338D2B47285C9E56D6D893DB2A999B47216756F18439997FB80A56E3

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	23.32.238.107:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	unknown	—	—	whitelisted
1268	svchost.exe	GET	200	2.23.181.156:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	unknown	—	—	whitelisted
1216	SIHClient.exe	GET	200	95.101.149.131:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl	unknown	—	—	whitelisted
2552	svchost.exe	GET	200	2.17.190.73:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	unknown	—	—	whitelisted
1216	SIHClient.exe	GET	200	95.101.149.131:80	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
5944	MoUsoCoreWorker.exe	20.73.194.208:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
1268	svchost.exe	20.73.194.208:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
3980	RUXIMICS.exe	20.73.194.208:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
1268	svchost.exe	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
1268	svchost.exe	23.32.238.107:80	crl.microsoft.com	Akamai International B.V.	DE	whitelisted
1268	svchost.exe	2.23.181.156:80	www.microsoft.com	AKAMAI-AS	DE	whitelisted
2552	svchost.exe	20.190.160.131:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
2552	svchost.exe	2.17.190.73:80	ocsp.digicert.com	AKAMAI-AS	DE	whitelisted

DNS requests

Domain	IP	Reputation
settings-win.data.microsoft.com	20.73.194.208 40.127.240.158 51.124.78.146	whitelisted
google.com	142.250.181.238	whitelisted
crl.microsoft.com	23.32.238.107 23.32.238.112	whitelisted
www.microsoft.com	2.23.181.156 95.101.149.131	whitelisted
login.live.com	20.190.160.131 40.126.32.140 20.190.160.65 20.190.160.5 40.126.32.134 40.126.32.76 20.190.160.2 40.126.32.68	whitelisted
ocsp.digicert.com	2.17.190.73	whitelisted
nexusrules.officeapps.live.com	52.111.227.11	whitelisted
slscr.update.microsoft.com	52.149.20.212	whitelisted
fe3cr.delivery.mp.microsoft.com	20.3.187.198	whitelisted

Threats

PID	Process	Class	Message
—	—	Unknown Traffic	ET USER_AGENTS Microsoft Dr Watson User-Agent (MSDW)

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No debug info

General Info

sigma.exe

9F9FD4BAE7532AA5292F0F2A03724D9C

EC5F1DE108DCB07AB502AB53EB7D7102AC57B3FC

1641C131147AC73D0DB18930C68151A1BC473303B54023D905A93D4F9AE7A292

98304:0C3CpAoH5bYok2xumzy72mh+kzK/7ueSnKHdcT6CmbKJytFja9WE/Ns2chWnXZLy:R03JEEThJj

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

SUSPICIOUS

The process drops C-runtime libraries

Process drops legitimate windows executable

Process drops python dynamic module

Executable content was dropped or overwritten

Application launched itself

Loads Python modules

There is functionality for taking screenshot (YARA)

INFO

The sample compiled with english language support

Checks supported languages

Reads the computer name

Create files in a temporary directory

PyInstaller has been detected (YARA)

Malware configuration

Static information

TRiD

EXIF

EXE

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Modules

Information

Modules

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings