Overview
overview
3Static
static
3GRSIMWrite...EN.dll
windows10-2004-x64
3GRSIMWrite...EN.dll
windows11-ltsc_2024-x64
3GRSIMWrite...ST.dll
windows10-2004-x64
3GRSIMWrite...ST.dll
windows11-ltsc_2024-x64
3GRSIMWrite...PI.dll
windows10-2004-x64
3GRSIMWrite...PI.dll
windows11-ltsc_2024-x64
3GRSIMWrite...LL.dll
windows10-2004-x64
3GRSIMWrite...LL.dll
windows11-ltsc_2024-x64
3GRSIMWrite...te.exe
windows10-2004-x64
3GRSIMWrite...te.exe
windows11-ltsc_2024-x64
3GRSIMWrite...70.dll
windows10-2004-x64
3GRSIMWrite...70.dll
windows11-ltsc_2024-x64
3Analysis
- max time kernel
149s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
24/08/2026, 11:22
Static task
static1
Behavioral task
behavioral1
Sample
GRSIMWrite4.4.7+/GRCOSEN.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
GRSIMWrite4.4.7+/GRCOSEN.dll
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral3
Sample
GRSIMWrite4.4.7+/GRRGST.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral4
Sample
GRSIMWrite4.4.7+/GRRGST.dll
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral5
Sample
GRSIMWrite4.4.7+/ICCAPI.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral6
Sample
GRSIMWrite4.4.7+/ICCAPI.dll
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral7
Sample
GRSIMWrite4.4.7+/MIDLL.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral8
Sample
GRSIMWrite4.4.7+/MIDLL.dll
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral9
Sample
GRSIMWrite4.4.7+/grsimwrite.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral10
Sample
GRSIMWrite4.4.7+/grsimwrite.exe
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral11
Sample
GRSIMWrite4.4.7+/qtintf70.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral12
Sample
GRSIMWrite4.4.7+/qtintf70.dll
Resource
win11ltsc2024-20260709-en
General
- Target GRSIMWrite4.4.7+/grsimwrite.exe
- Size 2.2MB
- Sample260824-ngxwtafp21
- SHA256 b179ff23e208e6b4c70e13468f7a7bf9c038b9f3d5080e9ba1e791840c6576d0
- MD5 ebdfb0caf8050e6f12e54fd0bef35035
- SHA1 71087212191f3c275b93ff85ec06168bcf5edd09
- SHA512 8d1f40eed1f8e3b29fb93aaacb969312f576732d78408e2b03787a49d403cfb04f0e74daa294a369909247d909f59fd6aa84bcc40406eab102158f152e748260
- SSDEEP 49152:AfepNEvEg1yOgHFfHKxfatxy8cwfR8lYqT:Yep+vpyxPKJai7wfeOqT
- TLSH T107B55B227681C3A2C22399780C67F3F5947ABE623EE564B7329B3F4CDF78540264715A
- MD5 SHA1 SHA512 SSDEEP TLSH
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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language grsimwrite.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2576 grsimwrite.exe 2576 grsimwrite.exe