Malware Analysis Report

2025-08-05 12:51

Sample ID 240509-bkhj3saa7t
Target 6857ca5b09a4892a6c934cd098453622d8ea4d48d9c0516a9ae4e01cd5a08123
SHA256 6857ca5b09a4892a6c934cd098453622d8ea4d48d9c0516a9ae4e01cd5a08123
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

6857ca5b09a4892a6c934cd098453622d8ea4d48d9c0516a9ae4e01cd5a08123

Threat Level: Shows suspicious behavior

The file 6857ca5b09a4892a6c934cd098453622d8ea4d48d9c0516a9ae4e01cd5a08123 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 01:12

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-09 01:12

Reported

2024-05-09 01:15

Platform

win10v2004-20240226-en

Max time kernel

163s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6857ca5b09a4892a6c934cd098453622d8ea4d48d9c0516a9ae4e01cd5a08123.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\6857ca5b09a4892a6c934cd098453622d8ea4d48d9c0516a9ae4e01cd5a08123.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6857ca5b09a4892a6c934cd098453622d8ea4d48d9c0516a9ae4e01cd5a08123.exe

"C:\Users\Admin\AppData\Local\Temp\6857ca5b09a4892a6c934cd098453622d8ea4d48d9c0516a9ae4e01cd5a08123.exe"

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1328 --field-trial-handle=2280,i,1836084024518340990,18250262151825427757,262144 --variations-seed-version /prefetch:8

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2428 -ip 2428

Network

Country Destination Domain Proto
GB 142.250.187.202:443 tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 131.109.69.13.in-addr.arpa udp
US 8.8.8.8:53 udp
US 8.8.8.8:53 udp
N/A 13.107.42.16:443 tcp

Files

memory/2428-0-0x00000000007C0000-0x00000000007C1000-memory.dmp

memory/2428-1-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/2428-2-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/2428-3-0x00000000007C0000-0x00000000007C1000-memory.dmp

memory/2428-4-0x00000000028E0000-0x0000000002960000-memory.dmp

memory/2428-5-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/2428-6-0x0000000000400000-0x000000000046F000-memory.dmp

memory/2428-7-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/2428-8-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/2428-10-0x0000000000400000-0x000000000046F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-09 01:12

Reported

2024-05-09 01:14

Platform

win11-20240426-en

Max time kernel

148s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6857ca5b09a4892a6c934cd098453622d8ea4d48d9c0516a9ae4e01cd5a08123.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\6857ca5b09a4892a6c934cd098453622d8ea4d48d9c0516a9ae4e01cd5a08123.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6857ca5b09a4892a6c934cd098453622d8ea4d48d9c0516a9ae4e01cd5a08123.exe

"C:\Users\Admin\AppData\Local\Temp\6857ca5b09a4892a6c934cd098453622d8ea4d48d9c0516a9ae4e01cd5a08123.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1220 -ip 1220

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1220 -s 728

Network

Country Destination Domain Proto
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/1220-0-0x0000000002240000-0x0000000002241000-memory.dmp

memory/1220-1-0x0000000002940000-0x00000000029C0000-memory.dmp

memory/1220-2-0x0000000000400000-0x000000000046F000-memory.dmp

memory/1220-3-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/1220-4-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/1220-7-0x0000000000400000-0x000000000046F000-memory.dmp