Malware Analysis Report

2025-01-02 05:31

Sample ID 240724-whythasejb
Target af46f6522e6f3395a35e1a32165a13d181b730bdcfeba17357284519ad2e8cb9
SHA256 af46f6522e6f3395a35e1a32165a13d181b730bdcfeba17357284519ad2e8cb9
Tags
smokeloader 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

af46f6522e6f3395a35e1a32165a13d181b730bdcfeba17357284519ad2e8cb9

Threat Level: Known bad

The file af46f6522e6f3395a35e1a32165a13d181b730bdcfeba17357284519ad2e8cb9 was found to be: Known bad.

Malicious Activity Summary

smokeloader backdoor discovery trojan

Smokeloader family

SmokeLoader

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-24 17:55

Signatures

Smokeloader family

smokeloader

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-07-24 17:55

Reported

2024-07-24 17:58

Platform

win7-20240704-en

Max time kernel

121s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\af46f6522e6f3395a35e1a32165a13d181b730bdcfeba17357284519ad2e8cb9.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\af46f6522e6f3395a35e1a32165a13d181b730bdcfeba17357284519ad2e8cb9.exe

"C:\Users\Admin\AppData\Local\Temp\af46f6522e6f3395a35e1a32165a13d181b730bdcfeba17357284519ad2e8cb9.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2864 -s 36

Network

N/A

Files

memory/2864-0-0x0000000000400000-0x000000000040B000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-24 17:55

Reported

2024-07-24 17:58

Platform

win10v2004-20240709-en

Max time kernel

133s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\af46f6522e6f3395a35e1a32165a13d181b730bdcfeba17357284519ad2e8cb9.exe"

Signatures

SmokeLoader

trojan backdoor 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\af46f6522e6f3395a35e1a32165a13d181b730bdcfeba17357284519ad2e8cb9.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\af46f6522e6f3395a35e1a32165a13d181b730bdcfeba17357284519ad2e8cb9.exe

"C:\Users\Admin\AppData\Local\Temp\af46f6522e6f3395a35e1a32165a13d181b730bdcfeba17357284519ad2e8cb9.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4344 -ip 4344

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4344 -s 224

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 42.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 18.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp

Files

memory/4344-0-0x0000000000400000-0x000000000040B000-memory.dmp