27f0c43bfef8477be9762bf67c76e7226c20a0775643da12d27a5819ec9f61db

Analysis

max time kernel
148s
max time network
157s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
24/08/2026, 11:22

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General

Target
GRSIMWrite4.4.7+/MIDLL.dll
Size 224KB
Sample260824-ngxwtafp21
SHA256 27f0c43bfef8477be9762bf67c76e7226c20a0775643da12d27a5819ec9f61db
MD5 907770aaac735935dc5b3c1d292dfd97
SHA1 004267edb36177454e451120110cb3e7ea8ee777
SHA512 018026b8697e08a912a250617fad4bc250952cee14e5c70aa182f320c6edb0d7fb9fd98cb9dd79924d79aac63698d9c0d216fafa6ad402af50c696e025ed7869
SSDEEP 1536:0qJlLeMipyqCd2IVM4hvq0KpRNhPYN1glXXW7sg5xxuKTWJS3wcPVlA6+/b7sZZk:fJheMikdY4hvZKphPeNAhajOSmog
TLSH
T16B245C10E581C47CE8D981FDD6F3CB7E9628A771138510C7D7D0BAEAAB2A4E2793144E
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1156	600	WerFault.exe	89

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 4544 wrote to memory of 600	4544	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\GRSIMWrite4.4.7+\MIDLL.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4544
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\GRSIMWrite4.4.7+\MIDLL.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:600
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 600 -s 500
    3⤵
    - Program crash
    PID:1156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 392 -p 600 -ip 600
1⤵
PID:5248

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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