Malware Analysis Report

2025-08-10 12:16

Sample ID 240610-1rlmrasaqd
Target 4d1e5f808b9e90b9b7ac9e32b4e11b2ef223745fa707aa4c34f60e3bd72ae42a
SHA256 4d1e5f808b9e90b9b7ac9e32b4e11b2ef223745fa707aa4c34f60e3bd72ae42a
Tags
upx persistence
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

4d1e5f808b9e90b9b7ac9e32b4e11b2ef223745fa707aa4c34f60e3bd72ae42a

Threat Level: Known bad

The file 4d1e5f808b9e90b9b7ac9e32b4e11b2ef223745fa707aa4c34f60e3bd72ae42a was found to be: Known bad.

Malicious Activity Summary

upx persistence

UPX dump on OEP (original entry point)

UPX dump on OEP (original entry point)

Deletes itself

Loads dropped DLL

Checks computer location settings

UPX packed file

Executes dropped EXE

Adds Run key to start application

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-10 21:53

Signatures

UPX dump on OEP (original entry point)

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

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-10 21:53

Reported

2024-06-10 21:55

Platform

win7-20240508-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4d1e5f808b9e90b9b7ac9e32b4e11b2ef223745fa707aa4c34f60e3bd72ae42a.exe"

Signatures

UPX dump on OEP (original entry point)

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

Deletes itself

Description Indicator Process Target
N/A N/A C:\windows\SysWOW64\cmd.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\Update\wuauclt.exe N/A

UPX packed file

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Window Update = "\"C:\\ProgramData\\Update\\wuauclt.exe\" /run" C:\Users\Admin\AppData\Local\Temp\4d1e5f808b9e90b9b7ac9e32b4e11b2ef223745fa707aa4c34f60e3bd72ae42a.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\4d1e5f808b9e90b9b7ac9e32b4e11b2ef223745fa707aa4c34f60e3bd72ae42a.exe

"C:\Users\Admin\AppData\Local\Temp\4d1e5f808b9e90b9b7ac9e32b4e11b2ef223745fa707aa4c34f60e3bd72ae42a.exe"

C:\ProgramData\Update\wuauclt.exe

"C:\ProgramData\Update\wuauclt.exe" /run

C:\windows\SysWOW64\cmd.exe

"C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\4d1e5f808b9e90b9b7ac9e32b4e11b2ef223745fa707aa4c34f60e3bd72ae42a.exe" >> NUL

Network

Country Destination Domain Proto
CA 158.69.115.115:443 tcp

Files

memory/2320-1-0x0000000000DA0000-0x0000000000DC8000-memory.dmp

memory/2320-5-0x0000000000B90000-0x0000000000BB8000-memory.dmp

C:\ProgramData\Update\wuauclt.exe

MD5 6dcec8f3d1d6cc8d3ebe3b6dad25d904
SHA1 e091f4cca193ba9bb7859c9ab2f51bee9e35918c
SHA256 6da5e096cb83825c8b893d8d5f71711e48e77c1d0c51be69294150c21b9e011d
SHA512 1f24f5b9db47b9943a6d85a835ec6e17dda58c852ef278dc74a3aa22e8129e0585cfa2ba43fd532fa7fcb82c3b76157cc3f94afd845c5939fbd07be551398c02

memory/1968-7-0x0000000000B90000-0x0000000000BB8000-memory.dmp

memory/2320-8-0x0000000000DA0000-0x0000000000DC8000-memory.dmp

memory/2320-9-0x0000000000B90000-0x0000000000BB8000-memory.dmp

memory/1968-10-0x0000000000B90000-0x0000000000BB8000-memory.dmp

memory/2320-11-0x0000000000DA0000-0x0000000000DC8000-memory.dmp

memory/2320-12-0x0000000000B90000-0x0000000000BB8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-10 21:53

Reported

2024-06-10 21:55

Platform

win10v2004-20240508-en

Max time kernel

62s

Max time network

51s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4d1e5f808b9e90b9b7ac9e32b4e11b2ef223745fa707aa4c34f60e3bd72ae42a.exe"

Signatures

UPX dump on OEP (original entry point)

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

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\4d1e5f808b9e90b9b7ac9e32b4e11b2ef223745fa707aa4c34f60e3bd72ae42a.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\Update\wuauclt.exe N/A

UPX packed file

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Window Update = "\"C:\\ProgramData\\Update\\wuauclt.exe\" /run" C:\Users\Admin\AppData\Local\Temp\4d1e5f808b9e90b9b7ac9e32b4e11b2ef223745fa707aa4c34f60e3bd72ae42a.exe N/A

Enumerates physical storage devices

Processes

C:\Users\Admin\AppData\Local\Temp\4d1e5f808b9e90b9b7ac9e32b4e11b2ef223745fa707aa4c34f60e3bd72ae42a.exe

"C:\Users\Admin\AppData\Local\Temp\4d1e5f808b9e90b9b7ac9e32b4e11b2ef223745fa707aa4c34f60e3bd72ae42a.exe"

C:\ProgramData\Update\wuauclt.exe

"C:\ProgramData\Update\wuauclt.exe" /run

C:\windows\SysWOW64\cmd.exe

"C:\windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\4d1e5f808b9e90b9b7ac9e32b4e11b2ef223745fa707aa4c34f60e3bd72ae42a.exe" >> NUL

Network

Country Destination Domain Proto
CA 158.69.115.115:443 tcp

Files

memory/3112-0-0x00000000009B0000-0x00000000009D8000-memory.dmp

C:\ProgramData\Update\wuauclt.exe

MD5 7308cf2a1b7a86816824b65a82f8ee63
SHA1 b47f84862ce71a3d20875dab2d979986d54dcb03
SHA256 9def86394fcb1aa5376cefce8247c096fb3827c5e060805e2dcbf93226aa93e6
SHA512 c68c85cc85227aba0ac7f46ddac04c408503a619ecba1933518983265f569bcb0a65ae071b32d0530aa511bf9ad35c45465239b277c2870e912de36d33c6fe62

memory/3528-4-0x0000000000DD0000-0x0000000000DF8000-memory.dmp

memory/3112-6-0x00000000009B0000-0x00000000009D8000-memory.dmp

memory/3528-7-0x0000000000DD0000-0x0000000000DF8000-memory.dmp

memory/3112-8-0x00000000009B0000-0x00000000009D8000-memory.dmp