Malware Analysis Report

2025-08-06 04:10

Sample ID 240508-257b2scf9x
Target b1a9dc57920812d55aa0dd81beb8cade20d3a9303878d5d4b257766cc7a55d65
SHA256 b1a9dc57920812d55aa0dd81beb8cade20d3a9303878d5d4b257766cc7a55d65
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

b1a9dc57920812d55aa0dd81beb8cade20d3a9303878d5d4b257766cc7a55d65

Threat Level: Shows suspicious behavior

The file b1a9dc57920812d55aa0dd81beb8cade20d3a9303878d5d4b257766cc7a55d65 was found to be: Shows suspicious behavior.

Malicious Activity Summary

bootkit persistence

Writes to the Master Boot Record (MBR)

Unsigned PE

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-08 23:10

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-08 23:10

Reported

2024-05-08 23:13

Platform

win10v2004-20240426-en

Max time kernel

149s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b1a9dc57920812d55aa0dd81beb8cade20d3a9303878d5d4b257766cc7a55d65.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\b1a9dc57920812d55aa0dd81beb8cade20d3a9303878d5d4b257766cc7a55d65.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b1a9dc57920812d55aa0dd81beb8cade20d3a9303878d5d4b257766cc7a55d65.exe

"C:\Users\Admin\AppData\Local\Temp\b1a9dc57920812d55aa0dd81beb8cade20d3a9303878d5d4b257766cc7a55d65.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 25.14.97.104.in-addr.arpa udp
US 8.8.8.8:53 130.211.222.173.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
BE 88.221.83.234:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.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
US 204.79.197.200:443 tse1.mm.bing.net tcp
BE 88.221.83.234:443 www.bing.com tcp
US 8.8.8.8:53 234.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 11.173.189.20.in-addr.arpa udp

Files

memory/628-0-0x0000000002250000-0x0000000002251000-memory.dmp

memory/628-2-0x0000000000400000-0x000000000046F000-memory.dmp

memory/628-1-0x00000000027A0000-0x0000000002820000-memory.dmp

memory/628-3-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/628-4-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/628-7-0x0000000000400000-0x000000000046F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-08 23:10

Reported

2024-05-08 23:13

Platform

win11-20240426-en

Max time kernel

141s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b1a9dc57920812d55aa0dd81beb8cade20d3a9303878d5d4b257766cc7a55d65.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\b1a9dc57920812d55aa0dd81beb8cade20d3a9303878d5d4b257766cc7a55d65.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b1a9dc57920812d55aa0dd81beb8cade20d3a9303878d5d4b257766cc7a55d65.exe

"C:\Users\Admin\AppData\Local\Temp\b1a9dc57920812d55aa0dd81beb8cade20d3a9303878d5d4b257766cc7a55d65.exe"

Network

Files

memory/5080-0-0x0000000002440000-0x0000000002441000-memory.dmp

memory/5080-1-0x00000000028D0000-0x0000000002950000-memory.dmp

memory/5080-2-0x0000000000400000-0x000000000046F000-memory.dmp

memory/5080-3-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/5080-4-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/5080-6-0x0000000002440000-0x0000000002441000-memory.dmp

memory/5080-8-0x0000000000400000-0x000000000046F000-memory.dmp