Malware Analysis Report

2025-08-06 04:10

Sample ID 240508-3q5eksge74
Target af3ed1c398c27bac85436169b07df586f2f5d6055c2161affc13b85d69573423
SHA256 af3ed1c398c27bac85436169b07df586f2f5d6055c2161affc13b85d69573423
Tags
bootkit persistence
score
10/10

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
10/10

SHA256

af3ed1c398c27bac85436169b07df586f2f5d6055c2161affc13b85d69573423

Threat Level: Known bad

The file af3ed1c398c27bac85436169b07df586f2f5d6055c2161affc13b85d69573423 was found to be: Known bad.

Malicious Activity Summary

bootkit persistence

Pitou

Writes to the Master Boot Record (MBR)

Unsigned PE

Program crash

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-08 23:44

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-08 23:44

Reported

2024-05-08 23:49

Platform

win7-20240508-en

Max time kernel

290s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\af3ed1c398c27bac85436169b07df586f2f5d6055c2161affc13b85d69573423.exe"

Signatures

Pitou

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

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PHYSICALDRIVE0 C:\Users\Admin\AppData\Local\Temp\af3ed1c398c27bac85436169b07df586f2f5d6055c2161affc13b85d69573423.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\af3ed1c398c27bac85436169b07df586f2f5d6055c2161affc13b85d69573423.exe

"C:\Users\Admin\AppData\Local\Temp\af3ed1c398c27bac85436169b07df586f2f5d6055c2161affc13b85d69573423.exe"

Network

N/A

Files

memory/1444-0-0x0000000000230000-0x0000000000231000-memory.dmp

memory/1444-1-0x0000000002FE0000-0x0000000003060000-memory.dmp

memory/1444-2-0x0000000000400000-0x000000000046F000-memory.dmp

memory/1444-3-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/1444-4-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/1444-5-0x0000000000230000-0x0000000000231000-memory.dmp

memory/1444-7-0x0000000000400000-0x000000000046F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-08 23:44

Reported

2024-05-08 23:49

Platform

win10-20240404-en

Max time kernel

292s

Max time network

299s

Command Line

"C:\Users\Admin\AppData\Local\Temp\af3ed1c398c27bac85436169b07df586f2f5d6055c2161affc13b85d69573423.exe"

Signatures

Pitou

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

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PHYSICALDRIVE0 C:\Users\Admin\AppData\Local\Temp\af3ed1c398c27bac85436169b07df586f2f5d6055c2161affc13b85d69573423.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\af3ed1c398c27bac85436169b07df586f2f5d6055c2161affc13b85d69573423.exe

"C:\Users\Admin\AppData\Local\Temp\af3ed1c398c27bac85436169b07df586f2f5d6055c2161affc13b85d69573423.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 820

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 856

Network

Country Destination Domain Proto
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 25.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp

Files

memory/4768-0-0x0000000000650000-0x0000000000651000-memory.dmp

memory/4768-2-0x0000000000400000-0x000000000046F000-memory.dmp

memory/4768-1-0x0000000002730000-0x00000000027B0000-memory.dmp

memory/4768-3-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/4768-4-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/4768-6-0x0000000000400000-0x000000000046F000-memory.dmp