Malware Analysis Report

2025-08-06 04:10

Sample ID 240508-3eqr2sff97
Target UACModuleSmokeLoader.exe
SHA256 47ff78372aeb7ca7e16561fce7b86705bbf8f794e68ef32adc5437e40da30a6c
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

47ff78372aeb7ca7e16561fce7b86705bbf8f794e68ef32adc5437e40da30a6c

Threat Level: Shows suspicious behavior

The file UACModuleSmokeLoader.exe 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

2024-05-08 23:25

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-08 23:25

Reported

2024-05-08 23:29

Platform

win7-20240215-en

Max time kernel

140s

Max time network

124s

Command Line

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

Processes

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

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

Network

N/A

Files

memory/2304-0-0x00000000003A0000-0x00000000003A1000-memory.dmp

memory/2304-1-0x0000000001F00000-0x0000000001F80000-memory.dmp

memory/2304-2-0x0000000000400000-0x000000000046F000-memory.dmp

memory/2304-3-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/2304-4-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/2304-6-0x00000000003A0000-0x00000000003A1000-memory.dmp

memory/2304-7-0x0000000000400000-0x000000000046F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-08 23:25

Reported

2024-05-08 23:29

Platform

win10v2004-20240426-en

Max time kernel

144s

Max time network

91s

Command Line

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

Processes

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5352 -ip 5352

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5352 -s 668

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 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 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
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
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 17.14.97.104.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 79.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.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 udp
US 8.8.8.8:53 udp
N/A 52.111.236.23:443 tcp
GB 87.248.205.0:80 tcp
US 8.8.8.8:53 udp

Files

memory/5352-0-0x0000000002280000-0x0000000002281000-memory.dmp

memory/5352-2-0x0000000000400000-0x000000000046F000-memory.dmp

memory/5352-3-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/5352-1-0x0000000002960000-0x00000000029E0000-memory.dmp

memory/5352-4-0x0000000000400000-0x00000000004EE000-memory.dmp

memory/5352-7-0x0000000000400000-0x000000000046F000-memory.dmp