Malware Analysis Report

2025-08-10 17:40

Sample ID 230916-c9wcxage4v
Target fc87b15ae486d4dc9071b06f293301dd.bin
SHA256 a89a74f6e839c1b3f6004057f59d467b4890430adf7232492510314faf08ea6b
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

a89a74f6e839c1b3f6004057f59d467b4890430adf7232492510314faf08ea6b

Threat Level: Known bad

The file fc87b15ae486d4dc9071b06f293301dd.bin 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: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-16 02:47

Signatures

Unsigned PE

Description Indicator Process Target
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Analysis: behavioral2

Detonation Overview

Submitted

2023-09-16 02:47

Reported

2023-09-16 02:49

Platform

win10v2004-20230915-en

Max time kernel

150s

Max time network

116s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.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\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.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\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4780 wrote to memory of 2660 N/A C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe
PID 4780 wrote to memory of 2660 N/A C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe
PID 4780 wrote to memory of 2660 N/A C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe
PID 4780 wrote to memory of 2660 N/A C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe
PID 4780 wrote to memory of 2660 N/A C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe
PID 4780 wrote to memory of 2660 N/A C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe

"C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe"

C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe

"C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe"

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 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.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 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 1.208.79.178.in-addr.arpa udp
US 8.8.8.8:53 126.178.238.8.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/4780-0-0x0000000000720000-0x0000000000735000-memory.dmp

memory/4780-1-0x0000000000740000-0x0000000000749000-memory.dmp

memory/2660-2-0x0000000000400000-0x0000000000409000-memory.dmp

memory/4780-3-0x0000000000720000-0x0000000000735000-memory.dmp

memory/2660-4-0x0000000000400000-0x0000000000409000-memory.dmp

memory/2660-6-0x0000000000400000-0x0000000000409000-memory.dmp

memory/3156-5-0x0000000002E50000-0x0000000002E66000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-16 02:47

Reported

2023-09-16 02:49

Platform

win7-20230831-en

Max time kernel

150s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.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\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.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\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2224 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe
PID 2224 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe
PID 2224 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe
PID 2224 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe
PID 2224 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe
PID 2224 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe
PID 2224 wrote to memory of 2428 N/A C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe

"C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe"

C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.exe

"C:\Users\Admin\AppData\Local\Temp\9679bd82b97cef2666a160a0511b96b40e794466ee9d00a5607ba51b2ff95236.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/2224-0-0x00000000003C0000-0x00000000003D5000-memory.dmp

memory/2428-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2224-1-0x00000000001B0000-0x00000000001B9000-memory.dmp

memory/2224-5-0x00000000003C0000-0x00000000003D5000-memory.dmp

memory/2428-4-0x0000000000400000-0x0000000000409000-memory.dmp

memory/2428-6-0x0000000000400000-0x0000000000409000-memory.dmp

memory/2428-8-0x0000000000400000-0x0000000000409000-memory.dmp

memory/1268-7-0x0000000002B60000-0x0000000002B76000-memory.dmp