4b6cc676769de04acf4936a5a395349cb779616c0621c5921bf07c3e405b51ee

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240221-en
resource tags

arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
submitted
22/03/2024, 13:41

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General

Target

$PLUGINSDIR/Midex.dll
Size

126KB
MD5

26ae155bc699bb8d535006d9889366ec
SHA1

47990e176505ba8fe8c9aa43018c71ce84702ed8
SHA256

7fd5d84381997482870359c50f43eeb52228ae3f75311405c6e80fb79203aea9
SHA512

03a21e68b8c5d5e2206bcd4b2795b6fabda9b6bafe5339f213dcfe7297a557cde93b85321f0fdc7b14fb7c602b71d8e0673c326994a43e72e6cab532843a7161
SSDEEP

3072:8ACUTz1JlJmpGB6yK4H9l4o8rr4YlixbSrZKbazGNbx:8ACUTz1JlopG5K4OZgeC

Score

6^/10

bootkit 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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2552	4768	WerFault.exe	80

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 4768	2960	rundll32.exe	80
PID 2960 wrote to memory of 4768	2960	rundll32.exe	80
PID 2960 wrote to memory of 4768	2960	rundll32.exe	80

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\Midex.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\Midex.dll,#1
  2⤵
  - Writes to the Master Boot Record (MBR)
  PID:4768
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 464
    3⤵
    - Program crash
    PID:2552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 4768 -ip 4768
1⤵
PID:1488

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads