Malware Analysis Report

2025-08-06 03:42

Sample ID 230922-s8rakaha6x
Target 3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa
SHA256 3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa
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

3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa

Threat Level: Known bad

The file 3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa was found to be: Known bad.

Malicious Activity Summary

smokeloader pub1 backdoor trojan

SmokeLoader

Suspicious use of SetThreadContext

Unsigned PE

Suspicious behavior: GetForegroundWindowSpam

Checks SCSI registry key(s)

Modifies registry class

Suspicious use of FindShellTrayWindow

Suspicious behavior: MapViewOfSection

Suspicious use of UnmapMainImage

Uses Task Scheduler COM API

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-22 15:48

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-22 15:48

Reported

2023-09-22 15:50

Platform

win10v2004-20230915-en

Max time kernel

150s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.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\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ N/A N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ N/A N/A
Key created \REGISTRY\USER\S-1-5-21-3027552071-446050021-1254071215-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ N/A N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

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\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeManageVolumePrivilege N/A C:\Windows\System32\svchost.exe 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 FindShellTrayWindow

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

Suspicious use of UnmapMainImage

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4948 wrote to memory of 936 N/A C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe
PID 4948 wrote to memory of 936 N/A C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe
PID 4948 wrote to memory of 936 N/A C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe
PID 4948 wrote to memory of 936 N/A C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe
PID 4948 wrote to memory of 936 N/A C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe
PID 4948 wrote to memory of 936 N/A C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe

"C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe"

C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe

"C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe"

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe

C:\Windows\System32\svchost.exe

C:\Windows\System32\svchost.exe -k UnistackSvcGroup

Network

Country Destination Domain Proto
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 89.143.109.104.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 200.197.79.204.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 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 135.1.85.104.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 240.81.21.72.in-addr.arpa udp
US 8.8.8.8:53 8.3.197.209.in-addr.arpa udp
US 8.8.8.8:53 126.211.247.8.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.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 8.8.8.8:53 254.111.26.67.in-addr.arpa udp
IE 52.111.236.21:443 tcp
US 8.8.8.8:53 210.143.182.52.in-addr.arpa udp

Files

memory/4948-0-0x00000000005F0000-0x0000000000605000-memory.dmp

memory/4948-1-0x0000000000610000-0x0000000000619000-memory.dmp

memory/936-2-0x0000000000400000-0x0000000000409000-memory.dmp

memory/936-3-0x0000000000400000-0x0000000000409000-memory.dmp

memory/4948-4-0x00000000005F0000-0x0000000000605000-memory.dmp

memory/936-6-0x0000000000400000-0x0000000000409000-memory.dmp

memory/2568-5-0x0000000000860000-0x0000000000876000-memory.dmp

memory/4020-13-0x0000021212590000-0x00000212125A0000-memory.dmp

memory/4020-29-0x0000021212690000-0x00000212126A0000-memory.dmp

memory/4020-45-0x000002121AA00000-0x000002121AA01000-memory.dmp

memory/4020-47-0x000002121AA30000-0x000002121AA31000-memory.dmp

memory/4020-48-0x000002121AA30000-0x000002121AA31000-memory.dmp

memory/4020-49-0x000002121AB40000-0x000002121AB41000-memory.dmp