Malware Analysis Report

2025-08-05 12:28

Sample ID 230923-va4jcaha3y
Target fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691
SHA256 fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691
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

fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691

Threat Level: Known bad

The file fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691 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

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Uses Task Scheduler COM API

Checks SCSI registry key(s)

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-23 16:48

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-09-23 16:48

Reported

2023-09-23 16:50

Platform

win10-20230915-en

Max time kernel

150s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.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\sdecveg N/A
N/A N/A C:\Users\Admin\AppData\Roaming\sdecveg N/A

Checks SCSI registry key(s)

Description Indicator Process Target
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\sdecveg N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\sdecveg N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Roaming\sdecveg N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.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\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\sdecveg 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 916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe
PID 916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe
PID 916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe
PID 916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe
PID 916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe
PID 916 wrote to memory of 2636 N/A C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe
PID 3952 wrote to memory of 4436 N/A C:\Users\Admin\AppData\Roaming\sdecveg C:\Users\Admin\AppData\Roaming\sdecveg
PID 3952 wrote to memory of 4436 N/A C:\Users\Admin\AppData\Roaming\sdecveg C:\Users\Admin\AppData\Roaming\sdecveg
PID 3952 wrote to memory of 4436 N/A C:\Users\Admin\AppData\Roaming\sdecveg C:\Users\Admin\AppData\Roaming\sdecveg
PID 3952 wrote to memory of 4436 N/A C:\Users\Admin\AppData\Roaming\sdecveg C:\Users\Admin\AppData\Roaming\sdecveg
PID 3952 wrote to memory of 4436 N/A C:\Users\Admin\AppData\Roaming\sdecveg C:\Users\Admin\AppData\Roaming\sdecveg
PID 3952 wrote to memory of 4436 N/A C:\Users\Admin\AppData\Roaming\sdecveg C:\Users\Admin\AppData\Roaming\sdecveg

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe

"C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe"

C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe

"C:\Users\Admin\AppData\Local\Temp\fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691.exe"

C:\Users\Admin\AppData\Roaming\sdecveg

C:\Users\Admin\AppData\Roaming\sdecveg

C:\Users\Admin\AppData\Roaming\sdecveg

C:\Users\Admin\AppData\Roaming\sdecveg

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 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 35.197.79.40.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 163.252.72.23.in-addr.arpa udp

Files

memory/916-1-0x0000000002750000-0x0000000002850000-memory.dmp

memory/916-2-0x00000000026F0000-0x00000000026F9000-memory.dmp

memory/2636-3-0x0000000000400000-0x0000000000409000-memory.dmp

memory/2636-4-0x0000000000400000-0x0000000000409000-memory.dmp

memory/2636-6-0x0000000000400000-0x0000000000409000-memory.dmp

memory/3296-5-0x0000000001450000-0x0000000001466000-memory.dmp

C:\Users\Admin\AppData\Roaming\sdecveg

MD5 14b3ae8430e975d51a5452484a3bcfb5
SHA1 4b1e785d83d7b3737c59c4ee81f7ae006792596d
SHA256 fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691
SHA512 7e0ae58ea2b6f5261823930b973e8855dfab7c226484dd03da0a1604a39cc2e05df98624df4cc6dbc533df191af59510a0f2804986cb909f32e62b5d5db71068

C:\Users\Admin\AppData\Roaming\sdecveg

MD5 14b3ae8430e975d51a5452484a3bcfb5
SHA1 4b1e785d83d7b3737c59c4ee81f7ae006792596d
SHA256 fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691
SHA512 7e0ae58ea2b6f5261823930b973e8855dfab7c226484dd03da0a1604a39cc2e05df98624df4cc6dbc533df191af59510a0f2804986cb909f32e62b5d5db71068

memory/3952-16-0x0000000002700000-0x0000000002800000-memory.dmp

C:\Users\Admin\AppData\Roaming\sdecveg

MD5 14b3ae8430e975d51a5452484a3bcfb5
SHA1 4b1e785d83d7b3737c59c4ee81f7ae006792596d
SHA256 fbf7afb2ded5b12702f92f5c3620486e19b6d3a15b8703d8cf80b8d30a55b691
SHA512 7e0ae58ea2b6f5261823930b973e8855dfab7c226484dd03da0a1604a39cc2e05df98624df4cc6dbc533df191af59510a0f2804986cb909f32e62b5d5db71068

memory/4436-19-0x0000000000400000-0x0000000000409000-memory.dmp

memory/3296-20-0x0000000001720000-0x0000000001736000-memory.dmp

memory/4436-23-0x0000000000400000-0x0000000000409000-memory.dmp

memory/3952-25-0x0000000002700000-0x0000000002800000-memory.dmp