52e0d00e6a7c7900de5515fa5cf0b31f7cfca72ec4f35c9d56d6f248cbfb6a77

Analysis

max time kernel
149s
max time network
147s
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

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General

Target
GRSIMWrite4.4.7+/GRRGST.dll
Size 72KB
Sample260824-ngxwtafp21
SHA256 52e0d00e6a7c7900de5515fa5cf0b31f7cfca72ec4f35c9d56d6f248cbfb6a77
MD5 333cfde8b611fe6c4368107c9ea76795
SHA1 3638b2a25fd45c26ff0133dab81b3eb9aab57b75
SHA512 2e223afc79c1b1b4afccb7d2e22fedd1004005406580fdd5a037fda021025454bc49454775169a2a97762577792b3c69a5cea8c62d046e87622c8ed43de5fce9
SSDEEP 1536:yWQXS9pOKaPKlF9NT7zXMg2Ps1rVWioNz3:iogK+wFAvwMioNz3
TLSH
T1BB73A02165D240F2D4EA997560969B3B9F7E6930468048C3CF3BFEA0BD226B0653B357
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
5040	4344	WerFault.exe	86

System Location Discovery: System Language Discovery 1 TTPs 2 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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ipconfig.exe

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
3932	ipconfig.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4676 wrote to memory of 4344	4676	rundll32.exe	86
PID 4344 wrote to memory of 3932	4344	rundll32.exe	87

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\GRSIMWrite4.4.7+\GRRGST.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4676
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\GRSIMWrite4.4.7+\GRRGST.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4344
- - C:\Windows\SysWOW64\ipconfig.exe
    ipconfig /all
    3⤵
    - System Location Discovery: System Language Discovery
    - Gathers network information
    PID:3932
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4344 -s 636
    3⤵
    - Program crash
    PID:5040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4344 -ip 4344
1⤵
PID:2528

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4344-0-0x0000000000E00000-0x0000000000E18000-memory.dmp

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