Malware Analysis Report

2024-12-08 00:48

Sample ID 240120-j4h9qafac8
Target file
SHA256 c086815f53088951955eebb5bdd5329b57c0d7e65980cb8d6ef7b40a18c6b3d8
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

c086815f53088951955eebb5bdd5329b57c0d7e65980cb8d6ef7b40a18c6b3d8

Threat Level: Known bad

The file file 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 UnmapMainImage

Uses Task Scheduler COM API

Modifies registry class

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-20 08:13

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-20 08:13

Reported

2024-01-20 08:15

Platform

win7-20231215-en

Max time kernel

150s

Max time network

127s

Command Line

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

Suspicious behavior: EnumeratesProcesses

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

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

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 gxutc2c.com udp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp

Files

memory/2060-1-0x0000000000920000-0x0000000000A20000-memory.dmp

memory/2060-2-0x0000000000220000-0x000000000022B000-memory.dmp

memory/2060-3-0x0000000000400000-0x000000000085B000-memory.dmp

memory/2060-5-0x0000000000400000-0x000000000085B000-memory.dmp

memory/1200-4-0x0000000002AA0000-0x0000000002AB6000-memory.dmp

memory/2060-8-0x0000000000220000-0x000000000022B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-20 08:13

Reported

2024-01-20 08:15

Platform

win10v2004-20231222-en

Max time kernel

150s

Max time network

148s

Command Line

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

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ N/A N/A
Key created \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000_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\file.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\file.exe N/A
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Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\file.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
Token: SeShutdownPrivilege N/A N/A N/A
Token: SeCreatePagefilePrivilege N/A N/A N/A

Suspicious use of UnmapMainImage

Description Indicator Process Target
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Uses Task Scheduler COM API

persistence

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.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 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 gxutc2c.com udp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
US 8.8.8.8:53 3.30.86.95.in-addr.arpa udp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
MK 95.86.30.3:80 gxutc2c.com tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 209.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp

Files

memory/3704-1-0x0000000000A00000-0x0000000000B00000-memory.dmp

memory/3704-2-0x00000000008E0000-0x00000000008EB000-memory.dmp

memory/3704-3-0x0000000000400000-0x000000000085B000-memory.dmp

memory/3568-4-0x0000000002470000-0x0000000002486000-memory.dmp

memory/3704-5-0x0000000000400000-0x000000000085B000-memory.dmp