Malware Analysis Report

2025-08-05 12:51

Sample ID 240509-cap2vabh9w
Target a4d469c57850d252e1634a45e3672053a4f79c23d965d12e0928f751eb66089f
SHA256 a4d469c57850d252e1634a45e3672053a4f79c23d965d12e0928f751eb66089f
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

a4d469c57850d252e1634a45e3672053a4f79c23d965d12e0928f751eb66089f

Threat Level: Shows suspicious behavior

The file a4d469c57850d252e1634a45e3672053a4f79c23d965d12e0928f751eb66089f 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 01:52

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-09 01:52

Reported

2024-05-09 01:55

Platform

win10v2004-20240426-en

Max time kernel

144s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a4d469c57850d252e1634a45e3672053a4f79c23d965d12e0928f751eb66089f.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\a4d469c57850d252e1634a45e3672053a4f79c23d965d12e0928f751eb66089f.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a4d469c57850d252e1634a45e3672053a4f79c23d965d12e0928f751eb66089f.exe

"C:\Users\Admin\AppData\Local\Temp\a4d469c57850d252e1634a45e3672053a4f79c23d965d12e0928f751eb66089f.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1300 -ip 1300

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1300 -s 708

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
BE 2.17.196.137:443 www.bing.com tcp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 137.196.17.2.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp

Files

memory/1300-0-0x0000000002140000-0x0000000002141000-memory.dmp

memory/1300-2-0x0000000000400000-0x000000000046F000-memory.dmp

memory/1300-3-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/1300-1-0x0000000002230000-0x00000000022B0000-memory.dmp

memory/1300-4-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/1300-7-0x0000000000400000-0x000000000046F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-09 01:52

Reported

2024-05-09 01:55

Platform

win11-20240426-en

Max time kernel

141s

Max time network

93s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a4d469c57850d252e1634a45e3672053a4f79c23d965d12e0928f751eb66089f.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\a4d469c57850d252e1634a45e3672053a4f79c23d965d12e0928f751eb66089f.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a4d469c57850d252e1634a45e3672053a4f79c23d965d12e0928f751eb66089f.exe

"C:\Users\Admin\AppData\Local\Temp\a4d469c57850d252e1634a45e3672053a4f79c23d965d12e0928f751eb66089f.exe"

Network

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

Files

memory/3976-0-0x0000000002240000-0x0000000002241000-memory.dmp

memory/3976-1-0x00000000028E0000-0x0000000002960000-memory.dmp

memory/3976-2-0x0000000000400000-0x000000000046F000-memory.dmp

memory/3976-3-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/3976-4-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/3976-7-0x0000000000400000-0x000000000046F000-memory.dmp