Malware Analysis Report

2025-08-06 03:42

Sample ID 230922-fbt9qsda81
Target toolspub1.exe
SHA256 e0aa93c3f01841d67f1d1f4caa49705313e441aa6c74ad027c890a2174681154
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

e0aa93c3f01841d67f1d1f4caa49705313e441aa6c74ad027c890a2174681154

Threat Level: Known bad

The file toolspub1.exe 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 use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: MapViewOfSection

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-22 04:42

Signatures

Unsigned PE

Description Indicator Process Target
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Analysis: behavioral1

Detonation Overview

Submitted

2023-09-22 04:42

Reported

2023-09-22 04:48

Platform

win7-20230831-en

Max time kernel

300s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\toolspub1.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Deletes itself

Description Indicator Process Target
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Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2076 set thread context of 1732 N/A C:\Users\Admin\AppData\Local\Temp\toolspub1.exe C:\Users\Admin\AppData\Local\Temp\toolspub1.exe

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\toolspub1.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\toolspub1.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\toolspub1.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\toolspub1.exe N/A
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Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\toolspub1.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\toolspub1.exe

"C:\Users\Admin\AppData\Local\Temp\toolspub1.exe"

C:\Users\Admin\AppData\Local\Temp\toolspub1.exe

"C:\Users\Admin\AppData\Local\Temp\toolspub1.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

Files

memory/2076-1-0x0000000000850000-0x0000000000950000-memory.dmp

memory/1732-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/1732-5-0x0000000000400000-0x0000000000409000-memory.dmp

memory/2076-4-0x0000000000220000-0x0000000000229000-memory.dmp

memory/1732-6-0x0000000000400000-0x0000000000409000-memory.dmp

memory/1732-7-0x0000000000400000-0x0000000000409000-memory.dmp

memory/1248-8-0x0000000002A50000-0x0000000002A66000-memory.dmp

memory/1732-9-0x0000000000400000-0x0000000000409000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-09-22 04:42

Reported

2023-09-22 04:48

Platform

win10v2004-20230915-en

Max time kernel

300s

Max time network

272s

Command Line

"C:\Users\Admin\AppData\Local\Temp\toolspub1.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1216 set thread context of 2784 N/A C:\Users\Admin\AppData\Local\Temp\toolspub1.exe C:\Users\Admin\AppData\Local\Temp\toolspub1.exe

Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\toolspub1.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\toolspub1.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\toolspub1.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\toolspub1.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\toolspub1.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

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\toolspub1.exe

"C:\Users\Admin\AppData\Local\Temp\toolspub1.exe"

C:\Users\Admin\AppData\Local\Temp\toolspub1.exe

"C:\Users\Admin\AppData\Local\Temp\toolspub1.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 126.179.238.8.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.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 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 254.22.238.8.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 5.173.189.20.in-addr.arpa udp

Files

memory/1216-1-0x0000000000AA0000-0x0000000000BA0000-memory.dmp

memory/1216-2-0x00000000008B0000-0x00000000008B9000-memory.dmp

memory/2784-3-0x0000000000400000-0x0000000000409000-memory.dmp

memory/2784-4-0x0000000000400000-0x0000000000409000-memory.dmp

memory/2784-6-0x0000000000400000-0x0000000000409000-memory.dmp

memory/3228-5-0x0000000000950000-0x0000000000966000-memory.dmp