Malware Analysis Report

2025-08-10 17:40

Sample ID 230915-yyw1yseh8x
Target 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b
SHA256 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b
Tags
smokeloader pub1 backdoor 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 Overview

score
10/10

SHA256

8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b

Threat Level: Known bad

The file 8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b was found to be: Known bad.

Malicious Activity Summary

smokeloader pub1 backdoor trojan

SmokeLoader

Deletes itself

Suspicious use of SetThreadContext

Unsigned PE

Checks SCSI registry key(s)

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-15 20:12

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-15 20:12

Reported

2023-09-15 20:14

Platform

win10-20230915-en

Max time kernel

150s

Max time network

135s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Deletes itself

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

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe N/A
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Suspicious behavior: GetForegroundWindowSpam

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

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1700 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
PID 1700 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
PID 1700 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
PID 1700 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
PID 1700 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe
PID 1700 wrote to memory of 1324 N/A C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe

"C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe"

C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe

"C:\Users\Admin\AppData\Local\Temp\8611d1e03d8fff50fd6e5c7379f1f1beccd104271b7fa09b63781055d587059b.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 host-file-host6.com udp
US 8.8.8.8:53 host-host-file8.com udp
NL 194.169.175.127:80 host-host-file8.com tcp
US 8.8.8.8:53 127.175.169.194.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 120.150.79.40.in-addr.arpa udp

Files

memory/1700-1-0x0000000000AE0000-0x0000000000BE0000-memory.dmp

memory/1700-2-0x0000000000A60000-0x0000000000A69000-memory.dmp

memory/1324-3-0x0000000000400000-0x0000000000409000-memory.dmp

memory/1324-4-0x0000000000400000-0x0000000000409000-memory.dmp

memory/1324-5-0x0000000000400000-0x0000000000409000-memory.dmp

memory/1324-7-0x0000000000400000-0x0000000000409000-memory.dmp

memory/3284-6-0x0000000000DB0000-0x0000000000DC6000-memory.dmp