Analysis
- max time kernel
148s - max time network
133s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
04/08/2026, 00:42
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
883a979495aa49ccd4a691f5a22bd335240153e5f594351e7d0baad10b13e540.dll
Resource
win10v2004-20260513-en
windows10-2004-x64
3 signatures
150 seconds
Behavioral task
behavioral2
Sample
883a979495aa49ccd4a691f5a22bd335240153e5f594351e7d0baad10b13e540.dll
Resource
win11ltsc2024-20260709-en
windows11-ltsc_2024-x64
3 signatures
150 seconds
General
- Target 883a979495aa49ccd4a691f5a22bd335240153e5f594351e7d0baad10b13e540.dll
- Size 390KB
- Sample260804-a2t4rsej2w
- SHA256 883a979495aa49ccd4a691f5a22bd335240153e5f594351e7d0baad10b13e540
- MD5 a58c979feb7271c4822a6c1c692be593
- SHA1 57c892d733cc7d1076e6407438a3b979fabc2933
- SHA512 b4ff1391050020f3adb6d4c13c881ae5857c3917b4ae83f3d7ea48ab8d1095fb0d81b7e06964952ef77de50cf41638f56d843360a47650cb9b8ee28c4a91efa3
- SSDEEP 6144:jsQeh2Rs1/WOAk4cwd9v3yaCpL96Sy1e3LTFzPJTgHFHKfI2ssIQ:gQXo/WtWB6TQ7BnIQ
- TLSH T1E4848D42BD94C0B2D5AE05309C3AD7A95A39BC204FB1EACB73945F7E4D303C1A73665A
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
3/10
Malware Config
Signatures
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32.exe - Modifies registry class 29 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{21A38F2F-8CE0-4ED4-97C6-A314F0252771}\3.1\FLAGS\ = "0" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{21A38F2F-8CE0-4ED4-97C6-A314F0252771}\3.1\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5A3797DB-AC5E-40CC-8F16-7245D2CED25D}\InprocServer32\ThreadingModel = "Apartment" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{21A38F2F-8CE0-4ED4-97C6-A314F0252771} regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shellex\DragDropHandlers\Fotosizer regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\*\shellex\ContextMenuHandlers\Fotosizer regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{21A38F2F-8CE0-4ED4-97C6-A314F0252771}\3.1\0 regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5A3797DB-AC5E-40CC-8F16-7245D2CED25D}\TypeLib regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5A3797DB-AC5E-40CC-8F16-7245D2CED25D}\TypeLib\ = "{21A38F2F-8CE0-4ED4-97C6-A314F0252771}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5A3797DB-AC5E-40CC-8F16-7245D2CED25D}\Version\ = "3.1" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{21A38F2F-8CE0-4ED4-97C6-A314F0252771}\3.1\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\883a979495aa49ccd4a691f5a22bd335240153e5f594351e7d0baad10b13e540.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5A3797DB-AC5E-40CC-8F16-7245D2CED25D}\InprocServer32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Folder\ShellEx\DragDropHandlers\Fotosizer\ = "{5A3797DB-AC5E-40CC-8F16-7245D2CED25D}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{21A38F2F-8CE0-4ED4-97C6-A314F0252771}\3.1\ = "FSShellExtensionLib" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{21A38F2F-8CE0-4ED4-97C6-A314F0252771}\3.1\FLAGS regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{21A38F2F-8CE0-4ED4-97C6-A314F0252771}\3.1\HELPDIR regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5A3797DB-AC5E-40CC-8F16-7245D2CED25D} regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5A3797DB-AC5E-40CC-8F16-7245D2CED25D}\ = "ContextMenuHandler Class" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5A3797DB-AC5E-40CC-8F16-7245D2CED25D}\Version regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shellex\DragDropHandlers\Fotosizer\ = "{5A3797DB-AC5E-40CC-8F16-7245D2CED25D}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Folder\ShellEx\DragDropHandlers\Fotosizer regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{21A38F2F-8CE0-4ED4-97C6-A314F0252771}\3.1\0\win32 regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5A3797DB-AC5E-40CC-8F16-7245D2CED25D}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\883a979495aa49ccd4a691f5a22bd335240153e5f594351e7d0baad10b13e540.dll" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shellex\ContextMenuHandlers\Fotosizer regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shellex\ContextMenuHandlers\Fotosizer\ = "{5A3797DB-AC5E-40CC-8F16-7245D2CED25D}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Folder\ShellEx\ContextMenuHandlers\Fotosizer regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Folder\ShellEx\ContextMenuHandlers\Fotosizer\ = "{5A3797DB-AC5E-40CC-8F16-7245D2CED25D}" regsvr32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\*\shellex\ContextMenuHandlers\Fotosizer\ = "{5A3797DB-AC5E-40CC-8F16-7245D2CED25D}" regsvr32.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{21A38F2F-8CE0-4ED4-97C6-A314F0252771}\3.1 regsvr32.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 4428 wrote to memory of 4236 4428 regsvr32.exe 88
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\883a979495aa49ccd4a691f5a22bd335240153e5f594351e7d0baad10b13e540.dll1⤵
- Suspicious use of WriteProcessMemory
PID:4428 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\883a979495aa49ccd4a691f5a22bd335240153e5f594351e7d0baad10b13e540.dll2⤵
- System Location Discovery: System Language Discovery
- Modifies registry class
PID:4236
-