Malware Analysis Report

2024-12-08 00:42

Sample ID 240201-mmndwsdacq
Target file.exe
SHA256 96845909bbac1b9dc17b3561090872738015abfce91bc5217c367dc2c1327f20
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

96845909bbac1b9dc17b3561090872738015abfce91bc5217c367dc2c1327f20

Threat Level: Known bad

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

Malicious Activity Summary

smokeloader pub3 backdoor trojan

SmokeLoader

Downloads MZ/PE file

Deletes itself

Executes dropped EXE

Loads dropped DLL

Drops startup file

Enumerates physical storage devices

Program crash

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: MapViewOfSection

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SendNotifyMessage

Checks SCSI registry key(s)

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-01 10:35

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-01 10:35

Reported

2024-02-01 10:37

Platform

win7-20231129-en

Max time kernel

150s

Max time network

118s

Command Line

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

Signatures

SmokeLoader

trojan backdoor smokeloader

Downloads MZ/PE file

Deletes itself

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

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SmartClock.lnk C:\Users\Admin\AppData\Local\Temp\9695.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9695.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9695.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9695.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\9695.exe N/A

Enumerates physical storage devices

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: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
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 FindShellTrayWindow

Description Indicator Process Target
N/A N/A N/A N/A
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Suspicious use of SendNotifyMessage

Description Indicator Process Target
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Processes

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

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

C:\Users\Admin\AppData\Local\Temp\9695.exe

C:\Users\Admin\AppData\Local\Temp\9695.exe

C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe

"C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 sjyey.com udp
BR 179.153.102.52:80 sjyey.com tcp
BR 179.153.102.52:80 sjyey.com tcp
BR 179.153.102.52:80 sjyey.com tcp
BR 179.153.102.52:80 sjyey.com tcp
BR 179.153.102.52:80 sjyey.com tcp
BR 179.153.102.52:80 sjyey.com tcp
BR 179.153.102.52:80 sjyey.com tcp
BR 179.153.102.52:80 sjyey.com tcp
BR 179.153.102.52:80 sjyey.com tcp
BR 179.153.102.52:80 sjyey.com tcp
BR 179.153.102.52:80 sjyey.com tcp
US 8.8.8.8:53 emgvod.com udp
KR 211.168.53.110:80 emgvod.com tcp
BR 179.153.102.52:80 sjyey.com tcp
BR 179.153.102.52:80 sjyey.com tcp
BR 179.153.102.52:80 sjyey.com tcp
BR 179.153.102.52:80 sjyey.com tcp
BR 179.153.102.52:80 sjyey.com tcp
BR 179.153.102.52:80 sjyey.com tcp
BR 179.153.102.52:80 sjyey.com tcp

Files

memory/2248-1-0x0000000002BB0000-0x0000000002CB0000-memory.dmp

memory/2248-2-0x0000000000400000-0x0000000002B07000-memory.dmp

memory/2248-3-0x0000000000220000-0x000000000022B000-memory.dmp

memory/1304-4-0x00000000024E0000-0x00000000024F6000-memory.dmp

memory/2248-5-0x0000000000400000-0x0000000002B07000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\9695.exe

MD5 06fad45002385c2b1062998e6d840e54
SHA1 4c598a9fd8f4768bfcc83a2b43effa1387050003
SHA256 fe089e2de5573a6e56ca69768894bffa6cfe9d2db226edd6ebd75a221d044611
SHA512 4917ea1585e746ad3f105589768a506f48c24d15bc88fe3a65419d7b5fee1f7af1fb06d5746a9a8982ce81de97f668eb24bbf53e45637f5c3e83dc95dd7f3f8f

memory/2768-20-0x0000000002C80000-0x0000000002D80000-memory.dmp

memory/2768-21-0x0000000000330000-0x00000000003C1000-memory.dmp

memory/2768-35-0x0000000000400000-0x0000000002B72000-memory.dmp

memory/2768-33-0x0000000000400000-0x0000000002B72000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SmartClock.lnk

MD5 990b0fb08453280b7e6f4878473f4068
SHA1 eca59f741c8dbf21b1352b8fe6707758b17ae0be
SHA256 3f96f7fd3968af1ef968ed7deefa02ec7154dc7f548d99153acd3b696fce9a7d
SHA512 32ff9a6c633bf4ddd38f10a8849e9a0b82fe86e3c87594d5577f818ca8288cd34c20c2fe82ab4ad3523e157e733eec3b6728fb6a8c0307a25e652963a14e972a

memory/2532-37-0x0000000002C40000-0x0000000002D40000-memory.dmp

memory/2532-38-0x0000000000400000-0x0000000002B72000-memory.dmp

memory/2532-41-0x0000000002C40000-0x0000000002D40000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-01 10:35

Reported

2024-02-01 10:37

Platform

win10v2004-20231215-en

Max time kernel

152s

Max time network

157s

Command Line

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

Signatures

SmokeLoader

trojan backdoor smokeloader

Downloads MZ/PE file

Deletes itself

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

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SmartClock.lnk C:\Users\Admin\AppData\Local\Temp\B83F.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\B83F.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe N/A

Enumerates physical storage devices

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\B83F.exe

Checks SCSI registry key(s)

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

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
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

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Users\Admin\AppData\Local\Temp\B83F.exe

C:\Users\Admin\AppData\Local\Temp\B83F.exe

C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe

"C:\Users\Admin\AppData\Roaming\Smart Clock\SmartClock.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3792 -ip 3792

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3792 -s 1000

Network

Country Destination Domain Proto
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 175.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 sjyey.com udp
KR 211.119.84.111:80 sjyey.com tcp
KR 211.119.84.111:80 sjyey.com tcp
US 8.8.8.8:53 111.84.119.211.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
KR 211.119.84.111:80 sjyey.com tcp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
KR 211.119.84.111:80 sjyey.com tcp
KR 211.119.84.111:80 sjyey.com tcp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
KR 211.119.84.111:80 sjyey.com tcp
KR 211.119.84.111:80 sjyey.com tcp
KR 211.119.84.111:80 sjyey.com tcp
KR 211.119.84.111:80 sjyey.com tcp
KR 211.119.84.111:80 sjyey.com tcp
KR 211.119.84.111:80 sjyey.com tcp
US 8.8.8.8:53 emgvod.com udp
PE 190.12.87.61:80 emgvod.com tcp
US 8.8.8.8:53 61.87.12.190.in-addr.arpa udp
KR 211.119.84.111:80 sjyey.com tcp
KR 211.119.84.111:80 sjyey.com tcp
KR 211.119.84.111:80 sjyey.com tcp
KR 211.119.84.111:80 sjyey.com tcp
KR 211.119.84.111:80 sjyey.com tcp
KR 211.119.84.111:80 sjyey.com tcp
KR 211.119.84.111:80 sjyey.com tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 179.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 11.173.189.20.in-addr.arpa udp

Files

memory/5068-1-0x0000000002C70000-0x0000000002D70000-memory.dmp

memory/5068-2-0x0000000004710000-0x000000000471B000-memory.dmp

memory/5068-3-0x0000000000400000-0x0000000002B07000-memory.dmp

memory/3512-4-0x00000000022A0000-0x00000000022B6000-memory.dmp

memory/5068-5-0x0000000000400000-0x0000000002B07000-memory.dmp

memory/5068-8-0x0000000004710000-0x000000000471B000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\B83F.exe

MD5 06fad45002385c2b1062998e6d840e54
SHA1 4c598a9fd8f4768bfcc83a2b43effa1387050003
SHA256 fe089e2de5573a6e56ca69768894bffa6cfe9d2db226edd6ebd75a221d044611
SHA512 4917ea1585e746ad3f105589768a506f48c24d15bc88fe3a65419d7b5fee1f7af1fb06d5746a9a8982ce81de97f668eb24bbf53e45637f5c3e83dc95dd7f3f8f

memory/3792-18-0x0000000002C90000-0x0000000002D90000-memory.dmp

memory/3792-19-0x0000000004780000-0x0000000004811000-memory.dmp

memory/3792-21-0x0000000000400000-0x0000000002B72000-memory.dmp

memory/8-29-0x0000000002E00000-0x0000000002F00000-memory.dmp

memory/8-30-0x0000000004800000-0x0000000004891000-memory.dmp

memory/3792-31-0x0000000000400000-0x0000000002B72000-memory.dmp

memory/8-32-0x0000000000400000-0x0000000002B72000-memory.dmp

memory/8-36-0x0000000002E00000-0x0000000002F00000-memory.dmp