4a175aaff948f99767fb490598cd01ca43223e30a18bd27a66ce8db88fe18247

Analysis

max time kernel
898s
max time network
453s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20260513-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
submitted
07/09/2026, 03:48

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General

Target
browser/resources/app.asar.unpacked/node_modules/bufferutil/prebuilds/win32-ia32/bufferutil.dll
Size 124KB
Sample260907-ec7qsaee87
SHA256 4a175aaff948f99767fb490598cd01ca43223e30a18bd27a66ce8db88fe18247
MD5 dae24f4927383a82f614d94f72df48fb
SHA1 574d191edf1272fff95f0221dfee5495fabcd8f7
SHA512 20fc56e0fa7a965b926d9cbda343000e136610087bf24322f0238fd96ec10f15149139d1a2fdffbbf532fa67b0d7cba1acfe514f4128b6115116c1c36d75af8e
SSDEEP 3072:7MGQ84L0QpCTi32vHKIXGzZYOGk5mAlwC2O+VPiVe5T:7/QvdWisH7GzePk5PhlM5
TLSH
T109C37C41B5D0C472D0BD08390924CBB59B7EB974DF609DDF63981ABA9E302C0DE36B66
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3832	4864	WerFault.exe	84
5136	4864	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 4776 wrote to memory of 4864	4776	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\browser\resources\app.asar.unpacked\node_modules\bufferutil\prebuilds\win32-ia32\bufferutil.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4776
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\browser\resources\app.asar.unpacked\node_modules\bufferutil\prebuilds\win32-ia32\bufferutil.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4864
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4864 -s 556
    3⤵
    - Program crash
    PID:3832
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4864 -s 776
    3⤵
    - Program crash
    PID:5136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4864 -ip 4864
1⤵
PID:3888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4864 -ip 4864
1⤵
PID:5944

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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