40467bf55d34e7d3b57b18729154072ef2c310446a9814f82533ec004fc9be8d

Analysis

max time kernel
122s
max time network
128s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04/01/2024, 12:44

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General

Target

40e4c083da257bb7c0bc04f7eeef4299.dll
Size

120KB
MD5

40e4c083da257bb7c0bc04f7eeef4299
SHA1

16426053b1ad93fa3832b4f083f1bbce8d172992
SHA256

40467bf55d34e7d3b57b18729154072ef2c310446a9814f82533ec004fc9be8d
SHA512

65bcf4d25a0fd984303538ad1a8cdff0f096ab0cfc14e54e4419fa78cc2e1b56b980b8cca55cc63d6b6db97221345d7833519dc1e770a89f05276faf202542e9
SSDEEP

3072:DJq8LGgTkFZ2wn/nVwpuqmWa8b8+vnCwjxZ/tC:D4EdkFoePVxua23nfjPtC

Score

6^/10

bootkit discovery persistence

Malware Config

Signatures

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

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

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1784	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2448 wrote to memory of 1784	2448	rundll32.exe	28
PID 2448 wrote to memory of 1784	2448	rundll32.exe	28
PID 2448 wrote to memory of 1784	2448	rundll32.exe	28
PID 2448 wrote to memory of 1784	2448	rundll32.exe	28
PID 2448 wrote to memory of 1784	2448	rundll32.exe	28
PID 2448 wrote to memory of 1784	2448	rundll32.exe	28
PID 2448 wrote to memory of 1784	2448	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\40e4c083da257bb7c0bc04f7eeef4299.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2448
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\40e4c083da257bb7c0bc04f7eeef4299.dll,#1
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Suspicious behavior: EnumeratesProcesses
  PID:1784

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

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1784-0-0x0000000000170000-0x000000000017B000-memory.dmp

Filesize
44KB

Download
memory/1784-1-0x0000000010000000-0x000000001000A000-memory.dmp

Filesize
40KB

Download
memory/1784-5-0x0000000000170000-0x000000000017B000-memory.dmp

Filesize
44KB

Download
memory/1784-4-0x0000000010000000-0x000000001000A000-memory.dmp

Filesize
40KB

Download
memory/1784-7-0x0000000000170000-0x000000000017B000-memory.dmp

Filesize
44KB

Download