matanbuchus | bf4d6c9798c27a18c65b93ee9568a8cc138b420ba69283af967e752e7c516bde

Analysis

max time kernel
149s
max time network
138s
platform
windows11-21h2_x64
resource
win11-20251015-en
resource tags

arch:x64arch:x86image:win11-20251015-enlocale:en-usos:windows11-21h2-x64system
submitted
10/12/2025, 14:43

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General

Target
bf4d6c9798c27a18c65b93ee9568a8cc138b420ba69283af967e752e7c516bde.dll
Size 5.1MB
Sample251210-r3125sew8a
SHA256 bf4d6c9798c27a18c65b93ee9568a8cc138b420ba69283af967e752e7c516bde
MD5 2bb2a469ead79203f3bd182889006505
SHA1 1896570f5a274ea2bb353c796ef607ad55eead1c
SHA512 1f53b146591032ea4b3f52c388a59b2860ac6d6b9b10aee0622766e9cb581efaf487c98119e61d145d78a606833261cfa0df0c5767f01b22f451057954d2b6c8
SSDEEP 98304:dry01LOR2tqL6mTPJ0yI0E2L8ZulFfYbV1M9j2D6GAk:Jy01La2tqL6mTPJ0L0E2L8ZulpYbHM9/
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

discovery matanbuchus loader

Malware Config

Signatures

Matanbuchus
Matanbuchus is a loader sold as MaaS first seen in February 2021.
loader matanbuchus
Matanbuchus family
matanbuchus

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 4232 wrote to memory of 3464	4232	rundll32.exe	78

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bf4d6c9798c27a18c65b93ee9568a8cc138b420ba69283af967e752e7c516bde.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4232
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\bf4d6c9798c27a18c65b93ee9568a8cc138b420ba69283af967e752e7c516bde.dll,#1
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3464

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

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Downloads

memory/3464-0-0x0000000070150000-0x0000000074D11000-memory.dmp

Download

memory/3464-1-0x0000000070150000-0x0000000074D11000-memory.dmp