46d1b809e2b76858182de1efa1e71fd2bc30767d2bd94322b36937ec81ab7fe2

Analysis

max time kernel
149s
max time network
96s
platform
windows11-21h2_x64
resource
win11-20260130-en
resource tags

arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
submitted
29/04/2026, 10:06

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
RUExt.dll
Size 188KB
Sample260429-l4869aev9k
SHA256 46d1b809e2b76858182de1efa1e71fd2bc30767d2bd94322b36937ec81ab7fe2
MD5 da34eb78000e53cbce43a5e58525dbb7
SHA1 adfe7061495bae245ae5d4e7b7cbf4c4f616d6c8
SHA512 dfd7f2f7bf5d5a6a233c93536d1011a2fe305360cfb3775d94f01651392e02d52df6a83a8344da64d990eaae27c11c121500540620f57f02aa7de0f20bdb5b42
SSDEEP 3072:xoEsHmpaBhl5TMNL1NEu0IzInds+oUBUoujjwu3nbzoSSm6b:x2HmiXwLrE3MAejN3u
TLSH
T1AB143847B6A440BBE137863589530A06E7727C912B609BDF1368537A1F737C0AE3BB61
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/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 4 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shellex\ContextMenuHandlers\RUShellExt\ = "{2C5515DC-2A7E-4BFD-B813-CACC2B685EB7}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\RUShellExt	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\RUShellExt\ = "{2C5515DC-2A7E-4BFD-B813-CACC2B685EB7}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shellex\ContextMenuHandlers\RUShellExt	regsvr32.exe

Modifies registry class 17 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\RUExt.DLL\AppID = "{1D928D64-60D3-4FAC-B810-C4D9D8A680CF}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{2C5515DC-2A7E-4BFD-B813-CACC2B685EB7}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\RUExt.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shellex\ContextMenuHandlers\RUShellExt\ = "{2C5515DC-2A7E-4BFD-B813-CACC2B685EB7}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\RUShellExt	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{1D928D64-60D3-4FAC-B810-C4D9D8A680CF}	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{2C5515DC-2A7E-4BFD-B813-CACC2B685EB7}\ = "RUShellExt Class"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\RUShellExt\ = "{2C5515DC-2A7E-4BFD-B813-CACC2B685EB7}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{1D928D64-60D3-4FAC-B810-C4D9D8A680CF}\ = "RUExt"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{2C5515DC-2A7E-4BFD-B813-CACC2B685EB7}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shellex\ContextMenuHandlers\RUShellExt	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\ShellEx\ContextMenuHandlers\RUShellExt	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Folder\ShellEx\ContextMenuHandlers\RUShellExt\ = "{2C5515DC-2A7E-4BFD-B813-CACC2B685EB7}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\RUExt.DLL	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{2C5515DC-2A7E-4BFD-B813-CACC2B685EB7}\InprocServer32	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{2C5515DC-2A7E-4BFD-B813-CACC2B685EB7}\InprocServer32\ThreadingModel = "Apartment"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Msi.Package\shellex\ContextMenuHandlers\RUShellExt	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Msi.Package\shellex\ContextMenuHandlers\RUShellExt\ = "{2C5515DC-2A7E-4BFD-B813-CACC2B685EB7}"	regsvr32.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\RUExt.dll
1⤵
- Modifies system executable filetype association
- Modifies registry class
PID:4544

Network

MITRE ATT&CK Enterprise v16

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads