0d296f9353373783f64441d9ef093ea9e624c1bacd0eb2bd3f650eae2124741d

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20250207-en
resource tags

arch:x64arch:x86image:win7-20250207-enlocale:en-usos:windows7-x64system
submitted
28/03/2025, 03:32

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General

Target

LEX2.dll
Size

208KB
MD5

7cdf8999a50a34f50971a1c50bfae4bc
SHA1

1d972e66425f5a118dc3f9eac26439cc80d3af80
SHA256

5f82d1d4ec944e7d9951c09d0c82e8e8e552c8ba57139cecb87c65b151c1300c
SHA512

697d2bc09a43d6c52d725c41caf1bec219f18691c5ec74b2fccdac992fb8a5a1c354d2730ff20cbb5229642947770c028ee90461724fa12a65b41e9ee3d89565
SSDEEP

6144:yrxt8hEgJ5o3T6cI98gWNlPTGQQm6agrdGG66:y+h56T6uNtTirdB

Score

6^/10

bootkit discovery persistence

Malware Config

Signatures

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	rundll32.exe

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 7 IoCs

description	pid	Process	procid_target
PID 2344 wrote to memory of 2096	2344	rundll32.exe	30
PID 2344 wrote to memory of 2096	2344	rundll32.exe	30
PID 2344 wrote to memory of 2096	2344	rundll32.exe	30
PID 2344 wrote to memory of 2096	2344	rundll32.exe	30
PID 2344 wrote to memory of 2096	2344	rundll32.exe	30
PID 2344 wrote to memory of 2096	2344	rundll32.exe	30
PID 2344 wrote to memory of 2096	2344	rundll32.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\LEX2.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2344
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\LEX2.dll,#1
  2⤵
  - Writes to the Master Boot Record (MBR)
  - System Location Discovery: System Language Discovery
  PID:2096

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2096-2-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-1-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-0-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-4-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-3-0x0000000010025000-0x0000000010026000-memory.dmp

Filesize
4KB

Download
memory/2096-7-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-17-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-18-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-16-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-15-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-14-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-13-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-12-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-11-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-10-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-9-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-8-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-6-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-5-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download
memory/2096-19-0x0000000010025000-0x0000000010026000-memory.dmp

Filesize
4KB

Download
memory/2096-20-0x0000000010000000-0x0000000010047000-memory.dmp

Filesize
284KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads