Malware Analysis Report

2025-01-06 09:05

Sample ID 240601-f9kg7abf2v
Target 46rurdufull.exe
SHA256 cdd5c9bea26d3d7599237ee8d1d250eabda7276caf9280e6bd970c92419570b8
Tags
bootkit evasion persistence
score
8/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
8/10

SHA256

cdd5c9bea26d3d7599237ee8d1d250eabda7276caf9280e6bd970c92419570b8

Threat Level: Likely malicious

The file 46rurdufull.exe was found to be: Likely malicious.

Malicious Activity Summary

bootkit evasion persistence

Disables Task Manager via registry modification

Writes to the Master Boot Record (MBR)

Unsigned PE

Modifies registry key

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-01 05:34

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-01 05:34

Reported

2024-06-01 05:37

Platform

win7-20240508-en

Max time kernel

133s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\46rurdufull.exe"

Signatures

Disables Task Manager via registry modification

evasion

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\46rurdufull.exe N/A

Modifies registry key

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\reg.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\46rurdufull.exe

"C:\Users\Admin\AppData\Local\Temp\46rurdufull.exe"

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c REG ADD hkcu\Software\Microsoft\Windows\CurrentVersion\policies\system /v DisableTaskMgr /t reg_dword /d 1 /f

C:\Windows\SysWOW64\reg.exe

REG ADD hkcu\Software\Microsoft\Windows\CurrentVersion\policies\system /v DisableTaskMgr /t reg_dword /d 1 /f

Network

N/A

Files

N/A