685803f39d241bad7d1271d209ef852147f7ccb91ac70fa6d80c3959b345df03

Analysis

max time kernel
898s
max time network
493s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20260513-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
submitted
30/05/2026, 04:32

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General

Target
Boot/bootuwf.dll
Size 29KB
Sample260530-e53yasdz71
SHA256 685803f39d241bad7d1271d209ef852147f7ccb91ac70fa6d80c3959b345df03
MD5 80d0782a3587ff3f32266b36117a0f79
SHA1 1a8779be6ba4ad4e2440671dd9e29e6406c84527
SHA512 70b8e46f501c0b3b982f0fdcba89c6d899227266d40e7a13ef52a7037bce027ec27098a3e2652c6882e76c2af61e8041efaa336a3489acc04f3bbc359c31247b
SSDEEP 384:bwHmQbH2zt6Baw5Ej5twjubWM/IPq4UpdYNAcZ71T93W0LW1TJDBRJ/856/R9z90:yH2z6ajsKbLk0HdcntW1PU5e9zm3
TLSH
T110D25AA1869045B2FCFB25B006AEF2BA7D7CE782179041D70B05A5D91962BD0FF3429F
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

discovery

Malware Config

Signatures

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 3588 wrote to memory of 1324	3588	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\Boot\bootuwf.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3588
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\Boot\bootuwf.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1324

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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