b58444e144341b9e5005352a5edd3be57927ca287caab0caacd166059e8a7215

Analysis

max time kernel
148s
max time network
143s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
05/09/2026, 01:43

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General

Target
refx_ffi.dll
Size 408KB
Sample260905-b5fafsvbjd
SHA256 b58444e144341b9e5005352a5edd3be57927ca287caab0caacd166059e8a7215
MD5 875f73abeeff66d6876a4a8856c09101
SHA1 acf1cd79e790814fcac4b32ce94636073dad96df
SHA512 4280b8d7463516648a38626699e2b30a7b32620217e369f33b9eab48b6508ba94b0ce7d790c38f8823d44f1b4cd6631963aa3e52ab5a2e138d6df056a7a1e549
SSDEEP 6144:cp5m1mGOdncpLtLXQZi6uWZuOqy6eylNZxHDm919/ACjxIo/Wf0ULIoBjAM5W6g3:a5gmGOglXQLZuVpDc11ILnIIjCx
TLSH
T1C4949D81B29224F5C50E1270B46DBB7FAB32565A432C9DF387E45C784DBE6E0287722D
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3552	2132	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 3392 wrote to memory of 2132	3392	rundll32.exe	89

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\refx_ffi.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3392
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\refx_ffi.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2132
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2132 -s 500
    3⤵
    - Program crash
    PID:3552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2132 -ip 2132
1⤵
PID:4564

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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