Malware Analysis Report

2024-11-13 18:56

Sample ID 240219-acm9xsfh2y
Target c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b
SHA256 c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b
Tags
smokeloader pub3 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

c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b

Threat Level: Known bad

The file c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b was found to be: Known bad.

Malicious Activity Summary

smokeloader pub3 backdoor trojan

SmokeLoader

Deletes itself

Unsigned PE

Checks SCSI registry key(s)

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-19 00:04

Signatures

Unsigned PE

Description Indicator Process Target
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Analysis: behavioral1

Detonation Overview

Submitted

2024-02-19 00:04

Reported

2024-02-19 00:09

Platform

win7-20231215-en

Max time kernel

300s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b.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 queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A N/A N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b.exe

"C:\Users\Admin\AppData\Local\Temp\c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 sjyey.com udp
KR 211.168.53.110:80 sjyey.com tcp
KR 211.168.53.110:80 sjyey.com tcp
KR 211.168.53.110:80 sjyey.com tcp
KR 211.168.53.110:80 sjyey.com tcp
KR 211.168.53.110:80 sjyey.com tcp
KR 211.168.53.110:80 sjyey.com tcp
KR 211.168.53.110:80 sjyey.com tcp

Files

memory/2120-1-0x0000000002D10000-0x0000000002E10000-memory.dmp

memory/2120-2-0x0000000000220000-0x000000000022B000-memory.dmp

memory/2120-3-0x0000000000400000-0x0000000002BE0000-memory.dmp

memory/2120-5-0x0000000000400000-0x0000000002BE0000-memory.dmp

memory/1208-4-0x0000000002D80000-0x0000000002D96000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-19 00:04

Reported

2024-02-19 00:09

Platform

win10-20240214-en

Max time kernel

300s

Max time network

250s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b.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\c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b.exe N/A
Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b.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

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b.exe

"C:\Users\Admin\AppData\Local\Temp\c40fe915433c1a8094a858affe62c6079154c668645f8e17751e7f39ebf4d31b.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 sjyey.com udp
KR 211.168.53.110:80 sjyey.com tcp
KR 211.168.53.110:80 sjyey.com tcp
US 8.8.8.8:53 110.53.168.211.in-addr.arpa udp
KR 211.168.53.110:80 sjyey.com tcp
KR 211.168.53.110:80 sjyey.com tcp
KR 211.168.53.110:80 sjyey.com tcp
KR 211.168.53.110:80 sjyey.com tcp
KR 211.168.53.110:80 sjyey.com tcp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 208.143.182.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp

Files

memory/1168-1-0x0000000002EF0000-0x0000000002FF0000-memory.dmp

memory/1168-2-0x0000000002E20000-0x0000000002E2B000-memory.dmp

memory/1168-3-0x0000000000400000-0x0000000002BE0000-memory.dmp

memory/3164-4-0x00000000013F0000-0x0000000001406000-memory.dmp

memory/1168-5-0x0000000000400000-0x0000000002BE0000-memory.dmp