Malware Analysis Report

2025-08-10 17:40

Sample ID 230916-pnrttadc53
Target 8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253
SHA256 8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253
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

8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253

Threat Level: Known bad

The file 8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253 was found to be: Known bad.

Malicious Activity Summary

smokeloader pub1 backdoor trojan

SmokeLoader

Deletes itself

Executes dropped EXE

Suspicious use of SetThreadContext

Unsigned PE

Checks SCSI registry key(s)

Suspicious behavior: GetForegroundWindowSpam

Suspicious behavior: EnumeratesProcesses

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 12:28

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-16 12:28

Reported

2023-09-16 12:31

Platform

win10-20230915-en

Max time kernel

150s

Max time network

131s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Deletes itself

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\swhiwjs N/A
N/A N/A C:\Users\Admin\AppData\Roaming\swhiwjs N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\swhiwjs N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\swhiwjs N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\swhiwjs N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.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\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\swhiwjs 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 1504 wrote to memory of 4060 N/A C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe
PID 1504 wrote to memory of 4060 N/A C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe
PID 1504 wrote to memory of 4060 N/A C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe
PID 1504 wrote to memory of 4060 N/A C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe
PID 1504 wrote to memory of 4060 N/A C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe
PID 1504 wrote to memory of 4060 N/A C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe
PID 3604 wrote to memory of 3488 N/A C:\Users\Admin\AppData\Roaming\swhiwjs C:\Users\Admin\AppData\Roaming\swhiwjs
PID 3604 wrote to memory of 3488 N/A C:\Users\Admin\AppData\Roaming\swhiwjs C:\Users\Admin\AppData\Roaming\swhiwjs
PID 3604 wrote to memory of 3488 N/A C:\Users\Admin\AppData\Roaming\swhiwjs C:\Users\Admin\AppData\Roaming\swhiwjs
PID 3604 wrote to memory of 3488 N/A C:\Users\Admin\AppData\Roaming\swhiwjs C:\Users\Admin\AppData\Roaming\swhiwjs
PID 3604 wrote to memory of 3488 N/A C:\Users\Admin\AppData\Roaming\swhiwjs C:\Users\Admin\AppData\Roaming\swhiwjs
PID 3604 wrote to memory of 3488 N/A C:\Users\Admin\AppData\Roaming\swhiwjs C:\Users\Admin\AppData\Roaming\swhiwjs

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe

"C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe"

C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe

"C:\Users\Admin\AppData\Local\Temp\8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253.exe"

C:\Users\Admin\AppData\Roaming\swhiwjs

C:\Users\Admin\AppData\Roaming\swhiwjs

C:\Users\Admin\AppData\Roaming\swhiwjs

C:\Users\Admin\AppData\Roaming\swhiwjs

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 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 5.173.189.20.in-addr.arpa udp

Files

memory/1504-1-0x00000000009D0000-0x0000000000AD0000-memory.dmp

memory/1504-2-0x0000000000960000-0x0000000000969000-memory.dmp

memory/4060-3-0x0000000000400000-0x0000000000409000-memory.dmp

memory/4060-4-0x0000000000400000-0x0000000000409000-memory.dmp

memory/4060-6-0x0000000000400000-0x0000000000409000-memory.dmp

memory/3264-5-0x0000000000CE0000-0x0000000000CF6000-memory.dmp

C:\Users\Admin\AppData\Roaming\swhiwjs

MD5 471d013aab48d5f5c969bc7aa6c16fa1
SHA1 11b57c813d8e758e72a6d9610f8b8bc29b0ec4ac
SHA256 8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253
SHA512 ee5563e164f93bdab792e1b63f5fca5a201d0abb9eab531520dddc82ce919ebb34ae341e44c60c05fbd50a991320f789e2f937ef5762715ac847936cd4dd3a55

C:\Users\Admin\AppData\Roaming\swhiwjs

MD5 471d013aab48d5f5c969bc7aa6c16fa1
SHA1 11b57c813d8e758e72a6d9610f8b8bc29b0ec4ac
SHA256 8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253
SHA512 ee5563e164f93bdab792e1b63f5fca5a201d0abb9eab531520dddc82ce919ebb34ae341e44c60c05fbd50a991320f789e2f937ef5762715ac847936cd4dd3a55

memory/3604-16-0x0000000000910000-0x0000000000A10000-memory.dmp

C:\Users\Admin\AppData\Roaming\swhiwjs

MD5 471d013aab48d5f5c969bc7aa6c16fa1
SHA1 11b57c813d8e758e72a6d9610f8b8bc29b0ec4ac
SHA256 8c3b5215c255fb79121d3fcdb77e2d6d361e1c2245262767239902ad50695253
SHA512 ee5563e164f93bdab792e1b63f5fca5a201d0abb9eab531520dddc82ce919ebb34ae341e44c60c05fbd50a991320f789e2f937ef5762715ac847936cd4dd3a55

memory/3488-19-0x0000000000400000-0x0000000000409000-memory.dmp

memory/3264-20-0x00000000026D0000-0x00000000026E6000-memory.dmp

memory/3488-23-0x0000000000400000-0x0000000000409000-memory.dmp