Malware Analysis Report

2025-08-05 12:50

Sample ID 240509-bx4m3sde73
Target 37974431e1b676202c285e78105306aea8efba0781890834adb2a65ca3e20010
SHA256 37974431e1b676202c285e78105306aea8efba0781890834adb2a65ca3e20010
Tags
bootkit persistence
score
6/10

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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
6/10

SHA256

37974431e1b676202c285e78105306aea8efba0781890834adb2a65ca3e20010

Threat Level: Shows suspicious behavior

The file 37974431e1b676202c285e78105306aea8efba0781890834adb2a65ca3e20010 was found to be: Shows suspicious behavior.

Malicious Activity Summary

bootkit persistence

Writes to the Master Boot Record (MBR)

Unsigned PE

Program crash

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-09 01:32

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-09 01:32

Reported

2024-05-09 01:34

Platform

win10v2004-20240508-en

Max time kernel

142s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\37974431e1b676202c285e78105306aea8efba0781890834adb2a65ca3e20010.exe"

Signatures

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PHYSICALDRIVE0 C:\Users\Admin\AppData\Local\Temp\37974431e1b676202c285e78105306aea8efba0781890834adb2a65ca3e20010.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\37974431e1b676202c285e78105306aea8efba0781890834adb2a65ca3e20010.exe

"C:\Users\Admin\AppData\Local\Temp\37974431e1b676202c285e78105306aea8efba0781890834adb2a65ca3e20010.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4488 -ip 4488

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4488 -s 708

Network

Country Destination Domain Proto
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 45.19.74.20.in-addr.arpa udp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/4488-0-0x0000000002120000-0x0000000002121000-memory.dmp

memory/4488-1-0x00000000027C0000-0x0000000002840000-memory.dmp

memory/4488-2-0x0000000000400000-0x000000000046F000-memory.dmp

memory/4488-3-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/4488-4-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/4488-7-0x0000000000400000-0x000000000046F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-09 01:32

Reported

2024-05-09 01:34

Platform

win11-20240426-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\37974431e1b676202c285e78105306aea8efba0781890834adb2a65ca3e20010.exe"

Signatures

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PHYSICALDRIVE0 C:\Users\Admin\AppData\Local\Temp\37974431e1b676202c285e78105306aea8efba0781890834adb2a65ca3e20010.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\37974431e1b676202c285e78105306aea8efba0781890834adb2a65ca3e20010.exe

"C:\Users\Admin\AppData\Local\Temp\37974431e1b676202c285e78105306aea8efba0781890834adb2a65ca3e20010.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4272 -ip 4272

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4272 -s 708

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp

Files

memory/4272-0-0x0000000002240000-0x0000000002241000-memory.dmp

memory/4272-1-0x00000000025A0000-0x0000000002620000-memory.dmp

memory/4272-2-0x0000000000400000-0x000000000046F000-memory.dmp

memory/4272-3-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/4272-4-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/4272-7-0x0000000000400000-0x000000000046F000-memory.dmp