4931ab310eba1332ca76a7528ec26364b2d56ec00fd2c2751a55a100907f7154

Analysis

max time kernel
149s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
01/07/2026, 14:36

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General

Target
Windows NT/htrn_jis.dll
Size 13KB
Sample260701-ry1wksh17s
SHA256 4931ab310eba1332ca76a7528ec26364b2d56ec00fd2c2751a55a100907f7154
MD5 d998a0e8ed62aa58fd83cf28b0603424
SHA1 13fad64529d4a22141f61cdadc63b1219e024e7e
SHA512 54e091487db8c0633f04ac33bd21f11998b7a399092192d46ebca4a1396000390879e81d17fe0d9f814e38f6019cb9f89521c197975a673ab3839473a5e6f986
SSDEEP 384:WzWOyq2TvAjs0/Led+BykaH/qJSpiuPMK0cK:Wz2q2LArO+wxftJrLK
TLSH
T14A529400FA41D12AE4F384B275B5A648AA783D72571810EB768E3B092F74EEC6C71733
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3428	4656	WerFault.exe	87

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 4780 wrote to memory of 4656	4780	rundll32.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Windows NT\htrn_jis.dll",#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4780
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Local\Temp\Windows NT\htrn_jis.dll",#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4656
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4656 -s 656
    3⤵
    - Program crash
    PID:3428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4656 -ip 4656
1⤵
PID:4344

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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