9ed5767db68fb669b3f18a0565cae471ee3800b94a187c4512e5a6691797c511

Resubmissions

27-11-2024 20:39

241127-zfpdtszjes 6

27-11-2024 20:33

25-11-2024 22:14

25-11-2024 20:57

28-09-2024 18:21

Analysis

max time kernel
95s
max time network
110s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
27-11-2024 20:39

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General

Target

YunShellExt64.dll
Size

1011KB
MD5

3a70aef3153e58a9624ef1bcaa63fbbb
SHA1

9f6a9f877a2153294687cdc5e661c6c539b3136d
SHA256

aede12d6e7221cdf81ca4dd73c7961a7d5bd4313f7793f5437a64ac271844317
SHA512

4d131f536f560207f7d259144327625d7c352c93979f663212d0fc430840757239e9be9c7030bc1826765d078fdaa9cb730e0cf2d217ff8203f6742547ffdaac
SSDEEP

24576:PMD0VtMR4O/e4KVvk0CCbOIuklHPiDSG6jFWe:PMD0VtMRzck0dqklHPcSG6j

Score

5^/10

persistence privilege_escalation

Malware Config

Signatures

Event Triggered Execution: Component Object Model Hijacking 1 TTPs
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
persistence privilege_escalation

Component Object Model Hijacking
T1546.015

Modifies system executable filetype association 2 TTPs 2 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\YunShellExt	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\YunShellExt\ = "{6D85624F-305A-491d-8848-C1927AA0D790}"	regsvr32.exe

Modifies registry class 64 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1434B2F5-5B9C-44C2-938D-2A11E03CEED9}\ = "IYunShellExtContextMenu"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{1434B2F5-5B9C-44C2-938D-2A11E03CEED9}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E1E5FCC7-D26F-41BC-A0C1-3D584EBEEBF5}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4E163184-F702-4DA9-972E-CC2993F9AC25}\ = "IWorkspaceOverlayIconError"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4E163184-F702-4DA9-972E-CC2993F9AC25}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6D85624F-305A-491d-8848-C1927AA0D790}\VersionIndependentProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6D85624F-305A-491d-8848-C1927AA0D790}\Programmable	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{75711486-6BB1-4C76-853A-F3B7763FACF4}\1.0\ = "YunShellExt 1.0 Type Library"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{75711486-6BB1-4C76-853A-F3B7763FACF4}\1.0	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1434B2F5-5B9C-44C2-938D-2A11E03CEED9}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{1434B2F5-5B9C-44C2-938D-2A11E03CEED9}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4E163184-F702-4DA9-972E-CC2993F9AC25}\TypeLib\Version = "1.0"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{B9480AFD-C7B1-4452-BE14-BB8A9540A05D}\ = "YunShellExt"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6D85624F-305A-491d-8848-C1927AA0D790}\VersionIndependentProgID\ = "YunShellExt.YunShellExtContextMenu"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{75711486-6BB1-4C76-853A-F3B7763FACF4}\1.0\FLAGS\ = "0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BAC6C6DA-893B-4F4D-8CD7-153A718C6B25}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BAC6C6DA-893B-4F4D-8CD7-153A718C6B25}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4E163184-F702-4DA9-972E-CC2993F9AC25}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6D85624F-305A-491d-8848-C1927AA0D790}\TypeLib	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\YunShellExt	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{75711486-6BB1-4C76-853A-F3B7763FACF4}\1.0\0	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E1E5FCC7-D26F-41BC-A0C1-3D584EBEEBF5}\TypeLib\ = "{75711486-6BB1-4C76-853A-F3B7763FACF4}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4E163184-F702-4DA9-972E-CC2993F9AC25}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{4E163184-F702-4DA9-972E-CC2993F9AC25}\TypeLib\ = "{75711486-6BB1-4C76-853A-F3B7763FACF4}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4E163184-F702-4DA9-972E-CC2993F9AC25}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6D85624F-305A-491d-8848-C1927AA0D790}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\YunShellExt64.dll"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Directory\shellex\ContextMenuHandlers\YunShellExt	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1434B2F5-5B9C-44C2-938D-2A11E03CEED9}\TypeLib\ = "{75711486-6BB1-4C76-853A-F3B7763FACF4}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BAC6C6DA-893B-4F4D-8CD7-153A718C6B25}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4E163184-F702-4DA9-972E-CC2993F9AC25}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E1E5FCC7-D26F-41BC-A0C1-3D584EBEEBF5}\ProxyStubClsid32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E1E5FCC7-D26F-41BC-A0C1-3D584EBEEBF5}\TypeLib\ = "{75711486-6BB1-4C76-853A-F3B7763FACF4}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BAC6C6DA-893B-4F4D-8CD7-153A718C6B25}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BAC6C6DA-893B-4F4D-8CD7-153A718C6B25}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{4E163184-F702-4DA9-972E-CC2993F9AC25}\ = "IWorkspaceOverlayIconError"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{B9480AFD-C7B1-4452-BE14-BB8A9540A05D}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{75711486-6BB1-4C76-853A-F3B7763FACF4}\1.0\FLAGS	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{75711486-6BB1-4C76-853A-F3B7763FACF4}\1.0\HELPDIR\ = "C:\\Users\\Admin\\AppData\\Local\\Temp"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6D85624F-305A-491d-8848-C1927AA0D790}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\YunShellExt\ = "{6D85624F-305A-491d-8848-C1927AA0D790}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{1434B2F5-5B9C-44C2-938D-2A11E03CEED9}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E1E5FCC7-D26F-41BC-A0C1-3D584EBEEBF5}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BAC6C6DA-893B-4F4D-8CD7-153A718C6B25}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\YunShellExt.DLL\AppID = "{B9480AFD-C7B1-4452-BE14-BB8A9540A05D}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\YunShellExt.YunShellExtContextMenu\CurVer\ = "YunShellExt.YunShellExtContextMenu.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6D85624F-305A-491d-8848-C1927AA0D790}\ProgID\ = "YunShellExt.YunShellExtContextMenu.1"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BAC6C6DA-893B-4F4D-8CD7-153A718C6B25}\TypeLib\ = "{75711486-6BB1-4C76-853A-F3B7763FACF4}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BAC6C6DA-893B-4F4D-8CD7-153A718C6B25}\TypeLib\Version = "1.0"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{75711486-6BB1-4C76-853A-F3B7763FACF4}\1.0\0\win64	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E1E5FCC7-D26F-41BC-A0C1-3D584EBEEBF5}\ = "IWorkspaceOverlayIconSync"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{BAC6C6DA-893B-4F4D-8CD7-153A718C6B25}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6D85624F-305A-491d-8848-C1927AA0D790}\ProgID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{BAC6C6DA-893B-4F4D-8CD7-153A718C6B25}\TypeLib	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{1434B2F5-5B9C-44C2-938D-2A11E03CEED9}\TypeLib\ = "{75711486-6BB1-4C76-853A-F3B7763FACF4}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\YunShellExt.YunShellExtContextMenu.1\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{75711486-6BB1-4C76-853A-F3B7763FACF4}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1434B2F5-5B9C-44C2-938D-2A11E03CEED9}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{6D85624F-305A-491d-8848-C1927AA0D790}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\*\shellex\ContextMenuHandlers\YunShellExt	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{75711486-6BB1-4C76-853A-F3B7763FACF4}\1.0\HELPDIR	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{1434B2F5-5B9C-44C2-938D-2A11E03CEED9}\ProxyStubClsid32\ = "{00020424-0000-0000-C000-000000000046}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Interface\{E1E5FCC7-D26F-41BC-A0C1-3D584EBEEBF5}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\YunShellExt.DLL	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\YunShellExt.YunShellExtContextMenu\CurVer	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\YunShellExt64.dll
1⤵
- Modifies system executable filetype association
- Modifies registry class
PID:3248

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Component Object Model Hijacking

T1546.015

Privilege Escalation

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Component Object Model Hijacking

T1546.015

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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