b1b03e634c085aab68e3f2c78fdcdcc745e8341c0dff6c494e88911b81a61dbc

Analysis

max time kernel
149s
max time network
118s
platform
windows11-21h2_x64
resource
win11-20260513-en
resource tags

arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
23/05/2026, 01:40

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General

Target
piview.dll
Size 304KB
Sample260523-b32exacy41
SHA256 b1b03e634c085aab68e3f2c78fdcdcc745e8341c0dff6c494e88911b81a61dbc
MD5 4e47d1d28edd06317f7f831e2f8075f2
SHA1 831ac6c58973e0aa5db943194e89424603be0e78
SHA512 9baa53338e159ae1ada33b0cf2ad07e039a18604e957d022d66fa4b5bf192eb2b4be9dd0120f4a6edc012f211ff831cc2d59c2fb3a40c8580874ff6ce0c57e6a
SSDEEP 6144:5VhcVqFFpODc/Mwa1ynTNanTz+STVWmOnPo+eHr5:raVqFeDcEwiiTUHr5
TLSH
T181648C16B3D1C271C4AB1831CE269BEDA2B5EDD19F6046033B653F8D6FF10515A2B28B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Modifies registry class 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PIThumbnailer.1\CLSID\ = "{36EAB66A-5E45-4f1c-AEFA-AF37F3FF298B}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CBCE923-870F-4f00-8097-4E61687B4469}\VersionIndependentProgID	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{36EAB66A-5E45-4f1c-AEFA-AF37F3FF298B}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9CCC0206-10E9-4DA7-8533-9DB7FA0369E6}\9.0\0\win32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{779A8AE0-4741-4187-89A3-DB876F25B704}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{36EAB66A-5E45-4f1c-AEFA-AF37F3FF298B}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{36EAB66A-5E45-4f1c-AEFA-AF37F3FF298B}\ProgID\ = "PIView.PIThumbnailer.1"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PISimpleViewer.1\CLSID	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C7C08420-CCC6-4092-A75C-9E55D5176B26}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PISimpleViewerControl\ = "PISimpleViewerControl Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PIPlaylist\CurVer	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{36EAB66A-5E45-4f1c-AEFA-AF37F3FF298B}\VersionIndependentProgID\ = "PIView.PIThumbnailer"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PIViewer\CurVer\ = "PIView.PIViewer.1"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8F25C9CD-F862-4354-8650-5051209EB26F}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{36EAB66A-5E45-4f1c-AEFA-AF37F3FF298B}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PISimpleViewer.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CBCE923-870F-4f00-8097-4E61687B4469}\VersionIndependentProgID\ = "PIView.PISimpleViewer"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CBCE923-870F-4f00-8097-4E61687B4469}\InprocServer32	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C7C08420-CCC6-4092-A75C-9E55D5176B26}\MiscStatus	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{779A8AE0-4741-4187-89A3-DB876F25B704}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PISimpleViewerControl	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C7C08420-CCC6-4092-A75C-9E55D5176B26}\MiscStatus\1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PIPlaylist\ = "PIPlaylist Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CBCE923-870F-4f00-8097-4E61687B4469}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\piview.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PIViewer.1\CLSID\ = "{24E8083A-CDD4-49b7-9E6D-CE56B117A55D}"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C7C08420-CCC6-4092-A75C-9E55D5176B26}\Control	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8F25C9CD-F862-4354-8650-5051209EB26F}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{36EAB66A-5E45-4f1c-AEFA-AF37F3FF298B}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9CCC0206-10E9-4DA7-8533-9DB7FA0369E6}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{36EAB66A-5E45-4f1c-AEFA-AF37F3FF298B}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\piview.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PISimpleViewer\ = "PISimpleViewer Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PIViewer\ = "PIViewer Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{24E8083A-CDD4-49b7-9E6D-CE56B117A55D}\ProgID	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8F25C9CD-F862-4354-8650-5051209EB26F}	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CBCE923-870F-4f00-8097-4E61687B4469}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9CCC0206-10E9-4DA7-8533-9DB7FA0369E6}\9.0\ = "PIView 9.0 Type Library"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CBCE923-870F-4f00-8097-4E61687B4469}\ = "PISimpleViewer Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{24E8083A-CDD4-49b7-9E6D-CE56B117A55D}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\piview.dll"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8F25C9CD-F862-4354-8650-5051209EB26F}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{779A8AE0-4741-4187-89A3-DB876F25B704}\TypeLib\Version = "9.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PIThumbnailer.1\ = "PIThumbnailer Class"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{36EAB66A-5E45-4f1c-AEFA-AF37F3FF298B}\InprocServer32	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{24E8083A-CDD4-49b7-9E6D-CE56B117A55D}\ProgID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9CCC0206-10E9-4DA7-8533-9DB7FA0369E6}\9.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C7C08420-CCC6-4092-A75C-9E55D5176B26}\MiscStatus\1\ = "131473"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PIPlaylist	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PIThumbnailer.1\CLSID	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PIViewer\CLSID\ = "{24E8083A-CDD4-49b7-9E6D-CE56B117A55D}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C7C08420-CCC6-4092-A75C-9E55D5176B26}\ = "PISimpleViewerControl Class"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C7C08420-CCC6-4092-A75C-9E55D5176B26}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8F25C9CD-F862-4354-8650-5051209EB26F}\VersionIndependentProgID\ = "PIView.PIPlaylist"	regsvr32.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C7C08420-CCC6-4092-A75C-9E55D5176B26}\Programmable	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9CCC0206-10E9-4DA7-8533-9DB7FA0369E6}\9.0\FLAGS	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9CCC0206-10E9-4DA7-8533-9DB7FA0369E6}\9.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{C7C08420-CCC6-4092-A75C-9E55D5176B26}\ProgID\ = "PIView.PISimpleViewerControl.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PIPlaylist\CurVer\ = "PIView.PIPlaylist.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PIThumbnailer\CLSID\ = "{36EAB66A-5E45-4f1c-AEFA-AF37F3FF298B}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{36EAB66A-5E45-4f1c-AEFA-AF37F3FF298B}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PISimpleViewerControl.1	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\PIView.PIPlaylist.1\CLSID\ = "{8F25C9CD-F862-4354-8650-5051209EB26F}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8CBCE923-870F-4f00-8097-4E61687B4469}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{24E8083A-CDD4-49b7-9E6D-CE56B117A55D}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{9CCC0206-10E9-4DA7-8533-9DB7FA0369E6}\9.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8F25C9CD-F862-4354-8650-5051209EB26F}\Programmable	regsvr32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2840	2380	regsvr32.exe	80

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\piview.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\piview.dll
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:2840

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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