1d5f2ea655dfac6d29c144bd27faf8df8e296fd1071d687e56e72925e1971992

Analysis

max time kernel
148s
max time network
115s
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+/ICCAPI.dll
Size 88KB
Sample260824-ngxwtafp21
SHA256 1d5f2ea655dfac6d29c144bd27faf8df8e296fd1071d687e56e72925e1971992
MD5 128a296b96db667f6d46c8b4c600e815
SHA1 3f33df29181ac2f758e34bc89eb45537925a61dc
SHA512 e1c4900642be84488129ce6b4672b5bf0fe1470f7e3a24bebb1e1b64306c261808bb1fc280541d0fd6eb797e727820c34f1706ba469c984c5b710b16a407599e
SSDEEP 1536:zTbLqhtodMus3TVo/Rnle7UcH7LTOd1WdoL2CnZBpKXtmJa0Q1aoF:nbuhGMugcBLdgdTSQ1aoF
TLSH
T1C0939E21F5CCC1B2D0AE683D1829263BDBBFAC3849798D538F50FE955DA72907922347
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

Program crash 2 IoCs

pid	pid_target	Process	procid_target
260	2324	WerFault.exe	88
2636	2324	WerFault.exe	88

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 3040 wrote to memory of 2324	3040	rundll32.exe	88

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\GRSIMWrite4.4.7+\ICCAPI.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\GRSIMWrite4.4.7+\ICCAPI.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2324
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2324 -s 500
    3⤵
    - Program crash
    PID:260
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2324 -s 500
    3⤵
    - Program crash
    PID:2636

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 392 -p 2324 -ip 2324
1⤵
PID:3032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2324 -ip 2324
1⤵
PID:3732

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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