Malware Analysis Report

2025-08-05 12:28

Sample ID 230923-kvh32aea9v
Target a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0
SHA256 a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0
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

a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0

Threat Level: Known bad

The file a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0 was found to be: Known bad.

Malicious Activity Summary

smokeloader pub1 backdoor trojan

SmokeLoader

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of WriteProcessMemory

Checks SCSI registry key(s)

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: MapViewOfSection

Uses Task Scheduler COM API

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-23 08:55

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-23 08:55

Reported

2023-09-23 08:57

Platform

win10v2004-20230915-en

Max time kernel

150s

Max time network

141s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.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\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4856 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe
PID 4856 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe
PID 4856 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe
PID 4856 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe
PID 4856 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe
PID 4856 wrote to memory of 2292 N/A C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe

"C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe"

C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe

"C:\Users\Admin\AppData\Local\Temp\a732cf8d4d21e263f45dd45a6e247c39b3e44a2a4c7d0e85cce2fb19bcb82bc0.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 240.81.21.72.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 39.142.81.104.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
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 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 226.162.46.104.in-addr.arpa udp

Files

memory/4856-1-0x0000000002750000-0x0000000002850000-memory.dmp

memory/4856-2-0x00000000042F0000-0x00000000042F9000-memory.dmp

memory/2292-3-0x0000000000400000-0x0000000000409000-memory.dmp

memory/2292-4-0x0000000000400000-0x0000000000409000-memory.dmp

memory/2292-5-0x0000000000400000-0x0000000000409000-memory.dmp

memory/2292-7-0x0000000000400000-0x0000000000409000-memory.dmp

memory/3124-6-0x00000000022D0000-0x00000000022E6000-memory.dmp

memory/3124-14-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-15-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-16-0x0000000007DC0000-0x0000000007DD0000-memory.dmp

memory/3124-17-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-18-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-19-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-20-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-21-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-23-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-25-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-26-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-27-0x0000000008040000-0x0000000008050000-memory.dmp

memory/3124-28-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-29-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-30-0x0000000008030000-0x0000000008040000-memory.dmp

memory/3124-31-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-33-0x0000000007DC0000-0x0000000007DD0000-memory.dmp

memory/3124-32-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-35-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-37-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-39-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-40-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-41-0x0000000008030000-0x0000000008040000-memory.dmp

memory/3124-42-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-45-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-44-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-47-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-46-0x0000000008040000-0x0000000008050000-memory.dmp

memory/3124-43-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-49-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-50-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-51-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-52-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-53-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-54-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-55-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-56-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-58-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-59-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-61-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-57-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-62-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-63-0x00000000023D0000-0x00000000023E0000-memory.dmp

memory/3124-64-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-66-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-65-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-70-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-68-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-67-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-72-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-74-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-75-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-76-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-77-0x00000000023D0000-0x00000000023E0000-memory.dmp

memory/3124-79-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-78-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-80-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-81-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-82-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-84-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-83-0x00000000027C0000-0x00000000027D0000-memory.dmp

memory/3124-85-0x00000000023D0000-0x00000000023E0000-memory.dmp