Malware Analysis Report

2025-01-02 11:39

Sample ID 241010-bz81kstemd
Target 661d1fe9902109bb8bec961dcde8e944.exe
SHA256 6dae626cd4840dddef5d9581045fbd59b761fa0df26746e29f4d7994d816369a
Tags
smokeloader pub2 backdoor discovery trojan
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

6dae626cd4840dddef5d9581045fbd59b761fa0df26746e29f4d7994d816369a

Threat Level: Known bad

The file 661d1fe9902109bb8bec961dcde8e944.exe was found to be: Known bad.

Malicious Activity Summary

smokeloader pub2 backdoor discovery trojan

SmokeLoader

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

Checks SCSI registry key(s)

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-10 01:36

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-10 01:36

Reported

2024-10-10 01:38

Platform

win7-20240708-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\661d1fe9902109bb8bec961dcde8e944.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\661d1fe9902109bb8bec961dcde8e944.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\661d1fe9902109bb8bec961dcde8e944.exe

"C:\Users\Admin\AppData\Local\Temp\661d1fe9902109bb8bec961dcde8e944.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2160 -s 168

Network

N/A

Files

memory/2160-1-0x0000000000560000-0x0000000000660000-memory.dmp

memory/2160-3-0x0000000000400000-0x000000000040B000-memory.dmp

memory/2160-2-0x0000000000220000-0x000000000022B000-memory.dmp

memory/2160-4-0x0000000000400000-0x000000000047A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-10 01:36

Reported

2024-10-10 01:38

Platform

win10v2004-20241007-en

Max time kernel

98s

Max time network

142s

Command Line

"C:\Users\Admin\AppData\Local\Temp\661d1fe9902109bb8bec961dcde8e944.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\661d1fe9902109bb8bec961dcde8e944.exe N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\661d1fe9902109bb8bec961dcde8e944.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\661d1fe9902109bb8bec961dcde8e944.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\661d1fe9902109bb8bec961dcde8e944.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\661d1fe9902109bb8bec961dcde8e944.exe

"C:\Users\Admin\AppData\Local\Temp\661d1fe9902109bb8bec961dcde8e944.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3316 -ip 3316

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3316 -s 464

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp

Files

memory/3316-2-0x0000000000400000-0x000000000040B000-memory.dmp

memory/3316-1-0x0000000000740000-0x0000000000840000-memory.dmp

memory/3316-3-0x0000000000400000-0x000000000047A000-memory.dmp

memory/3316-6-0x0000000000400000-0x000000000040B000-memory.dmp

memory/3316-5-0x0000000000400000-0x000000000047A000-memory.dmp