Malware Analysis Report

2024-11-13 18:55

Sample ID 241108-lmgexayret
Target f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff
SHA256 f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff
Tags
smokeloader pub3 backdoor discovery 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

f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff

Threat Level: Known bad

The file f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff was found to be: Known bad.

Malicious Activity Summary

smokeloader pub3 backdoor discovery trojan

SmokeLoader

Smokeloader family

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Checks SCSI registry key(s)

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-08 09:38

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-08 09:38

Reported

2024-11-08 09:41

Platform

win7-20240729-en

Max time kernel

90s

Max time network

16s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Smokeloader family

smokeloader

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2464 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe
PID 2464 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe
PID 2464 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe
PID 2464 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe
PID 2464 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe
PID 2464 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe
PID 2464 wrote to memory of 2968 N/A C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe

"C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe"

C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe

"C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe"

Network

N/A

Files

memory/2464-1-0x0000000000270000-0x0000000000370000-memory.dmp

memory/2968-6-0x0000000000400000-0x0000000000409000-memory.dmp

memory/2464-5-0x00000000001B0000-0x00000000001B9000-memory.dmp

memory/2968-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2968-7-0x0000000000400000-0x0000000000409000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-08 09:38

Reported

2024-11-08 09:41

Platform

win10v2004-20241007-en

Max time kernel

150s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe"

Signatures

SmokeLoader

trojan backdoor smokeloader

Smokeloader family

smokeloader

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe 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\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe N/A
Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1812 wrote to memory of 4020 N/A C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe
PID 1812 wrote to memory of 4020 N/A C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe
PID 1812 wrote to memory of 4020 N/A C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe
PID 1812 wrote to memory of 4020 N/A C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe
PID 1812 wrote to memory of 4020 N/A C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe
PID 1812 wrote to memory of 4020 N/A C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe

"C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe"

C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe

"C:\Users\Admin\AppData\Local\Temp\f6dbbdebe3b9e22d4ca07158b4c0a6b4b840593afeb6392f9942c27d66d8a9ff.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.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 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 71.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/1812-1-0x0000000000760000-0x0000000000860000-memory.dmp

memory/1812-2-0x0000000002220000-0x0000000002229000-memory.dmp

memory/4020-3-0x0000000000400000-0x0000000000409000-memory.dmp

memory/4020-4-0x0000000000400000-0x0000000000409000-memory.dmp

memory/4020-5-0x0000000000400000-0x0000000000409000-memory.dmp