72a070524c85666844ca7ee14f2e9280faabda2664dcc3bfde927ac67c66fc61

Analysis

max time kernel
9s
max time network
19s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
23-08-2024 15:30

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General

Target

RUExt.dll
Size

188KB
MD5

da34eb78000e53cbce43a5e58525dbb7
SHA1

adfe7061495bae245ae5d4e7b7cbf4c4f616d6c8
SHA256

46d1b809e2b76858182de1efa1e71fd2bc30767d2bd94322b36937ec81ab7fe2
SHA512

dfd7f2f7bf5d5a6a233c93536d1011a2fe305360cfb3775d94f01651392e02d52df6a83a8344da64d990eaae27c11c121500540620f57f02aa7de0f20bdb5b42
SSDEEP

3072:xoEsHmpaBhl5TMNL1NEu0IzInds+oUBUoujjwu3nbzoSSm6b:x2HmiXwLrE3MAejN3u

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

Modifies registry class 17 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{2C5515DC-2A7E-4BFD-B813-CACC2B685EB7}\InprocServer32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shellex\ContextMenuHandlers\RUShellExt	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\AppID\{1D928D64-60D3-4FAC-B810-C4D9D8A680CF}\ = "RUExt"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\RUExt.DLL\AppID = "{1D928D64-60D3-4FAC-B810-C4D9D8A680CF}"	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{2C5515DC-2A7E-4BFD-B813-CACC2B685EB7}	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\Msi.Package\shellex\ContextMenuHandlers\RUShellExt	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\CLSID\{2C5515DC-2A7E-4BFD-B813-CACC2B685EB7}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\RUExt.dll"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Msi.Package\shellex\ContextMenuHandlers\RUShellExt\ = "{2C5515DC-2A7E-4BFD-B813-CACC2B685EB7}"	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{2C5515DC-2A7E-4BFD-B813-CACC2B685EB7}\InprocServer32\ThreadingModel = "Apartment"	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\Folder\ShellEx\ContextMenuHandlers\RUShellExt	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:2464

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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