971ad8d8859b4a401f935bc806ae101f152657583405faae03d7612136b4d588

Analysis

max time kernel
898s
max time network
577s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20260130-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20260130-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
submitted
29/04/2026, 11:34

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General

Target
mingw32/bin/libbrotlicommon.dll
Size 136KB
Sample260429-nplhrafs2p
SHA256 971ad8d8859b4a401f935bc806ae101f152657583405faae03d7612136b4d588
MD5 eb52843bf395f35f9ae4dd599e2d0b6b
SHA1 adc633ee46a3e8845419bad17ebee26a3a53735e
SHA512 3b50883a8238b88e8984f370ae4d7b1695c61405178be903dac977bbeb03d5c69036b9d6ee0dd0827d37c476c8cec599b635888cc55c577d26ec09c079937742
SSDEEP 3072:sjx4lzbWhNbNL8DXGvVh73pbi0tdpvGJaoZB7PxB7:sjx4AhdNorGvHdbi09GJx
TLSH
T168D38DA1F3050736C21B627AE45A6BB9F33581B593670521B8A9426D20C3DA4873F7FF
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 3580 wrote to memory of 4080	3580	rundll32.exe	82

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\mingw32\bin\libbrotlicommon.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3580
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\mingw32\bin\libbrotlicommon.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4080

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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