4dad9264d498903d1010438255d6a4507ae7551adb79d469f8b8a4751fb7cef6

Analysis

max time kernel
148s
max time network
130s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260618-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
26/06/2026, 18:43

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General

Target
userenv.dll
Size 1.5MB
Sample260626-xdarjsd13s
SHA256 4dad9264d498903d1010438255d6a4507ae7551adb79d469f8b8a4751fb7cef6
MD5 36dab0daae1bafcea825b49c1c634a30
SHA1 1e0deb843e948d564df7cee1e0b7ff12cf65f8be
SHA512 c143388b1f82d5984c677137bee316d0a8d14a13bbdcb05ae47a8e143f1de1b6898f874b41a10a67fc8503050da2071885b0183167f83088dee15bdac0c418ac
SSDEEP 24576:h8Di2DnbPzFRASCYR4iVwaqXc5s8WHbKKF4VqQ9VRQ6IHEviniHI7W:STDzWaqXc5s8W+KFSqX6Zvin
TLSH
T18B755C2EFB4251F4E22397B5854FEB7B8B1879258021EE7FFF4ACA14B4335123845296
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

discovery

Malware Config

Signatures

Unexpected DNS network traffic destination 1 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	flow	ioc	pid	Process
Destination IP	3	45.55.94.174	6520	regsvr32.exe

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 10 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E10F6C3A-F1AE-4ADC-AA9D-2FE65525666E}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E10F6C3A-F1AE-4ADC-AA9D-2FE65525666E}	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{E10F6C3A-F1AE-4ADC-AA9D-2FE65525666E}\InProcServer32	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-3246620872-1649211507-2285877732-1000_Classes\WOW6432Node\Interface	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E10F6C3A-F1AE-4ADC-AA9D-2FE65525666E}\ProxyStubClsid32	regsvr32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\Interface\{E10F6C3A-F1AE-4ADC-AA9D-2FE65525666E}\NumMethods	regsvr32.exe
Key created	\REGISTRY\USER\S-1-5-21-3246620872-1649211507-2285877732-1000_Classes\WOW6432Node\CLSID	regsvr32.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 5796 wrote to memory of 6520	5796	regsvr32.exe	90

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\userenv.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:5796
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\userenv.dll
  2⤵
  - Unexpected DNS network traffic destination
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  PID:6520

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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