Malware Analysis Report

2025-08-05 12:28

Sample ID 230923-xvhtgsbf68
Target a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.exe
SHA256 a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38
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

a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38

Threat Level: Known bad

The file a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.exe was found to be: Known bad.

Malicious Activity Summary

smokeloader pub1 backdoor trojan

SmokeLoader

Deletes itself

Unsigned PE

Checks SCSI registry key(s)

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Uses Task Scheduler COM API

Suspicious behavior: MapViewOfSection

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-09-23 19:10

Signatures

Unsigned PE

Description Indicator Process Target
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Analysis: behavioral1

Detonation Overview

Submitted

2023-09-23 19:10

Reported

2023-09-23 19:12

Platform

win7-20230831-en

Max time kernel

151s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Deletes itself

Description Indicator Process Target
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Checks SCSI registry key(s)

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.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\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.exe

"C:\Users\Admin\AppData\Local\Temp\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 gudintas.at udp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp

Files

memory/3004-1-0x0000000000270000-0x0000000000370000-memory.dmp

memory/3004-2-0x00000000001C0000-0x00000000001C9000-memory.dmp

memory/3004-3-0x0000000000400000-0x0000000000711000-memory.dmp

memory/1252-4-0x0000000002AF0000-0x0000000002B06000-memory.dmp

memory/3004-5-0x0000000000400000-0x0000000000711000-memory.dmp

memory/3004-8-0x00000000001C0000-0x00000000001C9000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-09-23 19:10

Reported

2023-09-23 19:13

Platform

win10v2004-20230915-en

Max time kernel

152s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.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\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.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\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.exe

"C:\Users\Admin\AppData\Local\Temp\a9f3066845f3f00c34bd13812d9b2db561ec77824aa0ece2fca57f0071847d38_JC.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 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 1.208.79.178.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 108.211.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 198.1.85.104.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 38.148.119.40.in-addr.arpa udp
US 8.8.8.8:53 gudintas.at udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 131.233.213.123.in-addr.arpa udp
KR 123.213.233.131:80 gudintas.at tcp
US 8.8.8.8:53 240.81.21.72.in-addr.arpa udp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
KR 123.213.233.131:80 gudintas.at tcp
US 8.8.8.8:53 253.15.104.51.in-addr.arpa udp

Files

memory/844-1-0x00000000007A0000-0x00000000008A0000-memory.dmp

memory/844-2-0x0000000002460000-0x0000000002469000-memory.dmp

memory/844-3-0x0000000000400000-0x0000000000711000-memory.dmp

memory/844-4-0x0000000000400000-0x0000000000711000-memory.dmp

memory/3144-5-0x0000000002A30000-0x0000000002A46000-memory.dmp

memory/844-6-0x0000000000400000-0x0000000000711000-memory.dmp

memory/844-9-0x0000000002460000-0x0000000002469000-memory.dmp