28dd68501f527be6bc54f5f374bc33be983ea7ac640e66e3a56272cd3b9a5655

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20260513-en
resource tags

arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
submitted
04/07/2026, 12:24

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General

Target
api-ms-win-core-processthreads-l1-1-0.dll
Size 13KB
Sample260704-plefpsfs9v
SHA256 28dd68501f527be6bc54f5f374bc33be983ea7ac640e66e3a56272cd3b9a5655
MD5 f2fa7c391d7671ab11028e85d29ab27f
SHA1 734ccf57cab781d367b62d216b6582f3bb89249d
SHA512 3286fd352fb4149151168babe4b1e44d22e914d950f41c099748e8d3b117ada86391fb4e0ef5863aac07b2a08372ccce0c470642ac8a7c7dbf97ea72af1d0583
SSDEEP 384:ok1JzNcKSI1WOhWzDBRJS/kPlI66YeO7EN:DcKSmS1P1q66MoN
TLSH
T15C520AC58AAC9183E89EAC703259E9533D3B93450D25846106E9F6DE3EEB3C6D72463C
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1372	3944	WerFault.exe	84

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 3420 wrote to memory of 3944	3420	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\api-ms-win-core-processthreads-l1-1-0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3420
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\api-ms-win-core-processthreads-l1-1-0.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3944
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3944 -s 600
    3⤵
    - Program crash
    PID:1372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3944 -ip 3944
1⤵
PID:4736

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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