71a91c0d0479424861bd7f23f706d7f312a5ab3bd76a977abd233a1a8fe5aff7

Analysis

max time kernel
149s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20260911-en
resource tags

arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
30/09/2026, 00:17

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General

Target
winopt_assistant.dll
Size 1.0MB
Sample260930-alg49sw19j
SHA256 71a91c0d0479424861bd7f23f706d7f312a5ab3bd76a977abd233a1a8fe5aff7
MD5 9c7c5b4a769103a88c2c1803f4dfabd9
SHA1 8ca5df469b53defdebfab9a0aaff27da1ea9c27c
SHA512 f0c0fe48dc080f8be2d4bdecd743b0bd026f17eb05f7fa907b6f93c7e55315f400a9e7ed104503663ea1c9e33571b69ecb61b83c0c383f7fdabbc048422b9933
SSDEEP 24576:rLTj53Gf21klgfGHysCdGi8IlvXg22N8ymU:7HLGbC4i8Ilvg22eymU
TLSH
T10B258D513649C035DA6D11B04C39EBEA406DBE260B7145CB67E87FAE5E301D3AF31A2B
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	rundll32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 5048 wrote to memory of 4564	5048	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\winopt_assistant.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5048
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\winopt_assistant.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4564

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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