Malware Analysis Report

2025-08-10 18:08

Sample ID 240507-gfkfrsef98
Target b807971d3df6b2a7239381ebcd4a24e9c3c22bc29f8060f1665971ab4c117536
SHA256 b807971d3df6b2a7239381ebcd4a24e9c3c22bc29f8060f1665971ab4c117536
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

b807971d3df6b2a7239381ebcd4a24e9c3c22bc29f8060f1665971ab4c117536

Threat Level: Shows suspicious behavior

The file b807971d3df6b2a7239381ebcd4a24e9c3c22bc29f8060f1665971ab4c117536 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

2024-05-07 05:44

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-07 05:44

Reported

2024-05-07 05:47

Platform

win10v2004-20240426-en

Max time kernel

140s

Max time network

101s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b807971d3df6b2a7239381ebcd4a24e9c3c22bc29f8060f1665971ab4c117536.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\b807971d3df6b2a7239381ebcd4a24e9c3c22bc29f8060f1665971ab4c117536.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b807971d3df6b2a7239381ebcd4a24e9c3c22bc29f8060f1665971ab4c117536.exe

"C:\Users\Admin\AppData\Local\Temp\b807971d3df6b2a7239381ebcd4a24e9c3c22bc29f8060f1665971ab4c117536.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 139.53.16.96.in-addr.arpa udp
US 8.8.8.8:53 79.190.18.2.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 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp

Files

memory/5072-2-0x0000000004780000-0x00000000047EB000-memory.dmp

memory/5072-1-0x0000000002BE0000-0x0000000002CE0000-memory.dmp

memory/5072-3-0x0000000000400000-0x000000000046F000-memory.dmp

memory/5072-4-0x0000000000400000-0x0000000002B4D000-memory.dmp

memory/5072-5-0x0000000000400000-0x0000000002B4D000-memory.dmp

memory/5072-7-0x0000000002BE0000-0x0000000002CE0000-memory.dmp

memory/5072-8-0x0000000004780000-0x00000000047EB000-memory.dmp

memory/5072-9-0x0000000000400000-0x000000000046F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-07 05:44

Reported

2024-05-07 05:47

Platform

win11-20240419-en

Max time kernel

147s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b807971d3df6b2a7239381ebcd4a24e9c3c22bc29f8060f1665971ab4c117536.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\b807971d3df6b2a7239381ebcd4a24e9c3c22bc29f8060f1665971ab4c117536.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b807971d3df6b2a7239381ebcd4a24e9c3c22bc29f8060f1665971ab4c117536.exe

"C:\Users\Admin\AppData\Local\Temp\b807971d3df6b2a7239381ebcd4a24e9c3c22bc29f8060f1665971ab4c117536.exe"

Network

Files

memory/3480-1-0x0000000002C00000-0x0000000002D00000-memory.dmp

memory/3480-2-0x0000000004860000-0x00000000048CB000-memory.dmp

memory/3480-3-0x0000000000400000-0x000000000046F000-memory.dmp

memory/3480-4-0x0000000000400000-0x0000000002B4D000-memory.dmp

memory/3480-5-0x0000000000400000-0x0000000002B4D000-memory.dmp

memory/3480-7-0x0000000002C00000-0x0000000002D00000-memory.dmp

memory/3480-8-0x0000000004860000-0x00000000048CB000-memory.dmp

memory/3480-10-0x0000000000400000-0x000000000046F000-memory.dmp