Malware Analysis Report

2025-05-06 01:12

Sample ID 241109-z5m73aserk
Target 38bba5c6e71758181882cda76ee9b0e9c8ad92f5dbe7fcaf01bbb9ddb573f0ad
SHA256 38bba5c6e71758181882cda76ee9b0e9c8ad92f5dbe7fcaf01bbb9ddb573f0ad
Tags
discovery persistence
score
7/10

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
7/10

SHA256

38bba5c6e71758181882cda76ee9b0e9c8ad92f5dbe7fcaf01bbb9ddb573f0ad

Threat Level: Shows suspicious behavior

The file 38bba5c6e71758181882cda76ee9b0e9c8ad92f5dbe7fcaf01bbb9ddb573f0ad was found to be: Shows suspicious behavior.

Malicious Activity Summary

discovery persistence

Deletes itself

Executes dropped EXE

Adds Run key to start application

Drops file in Windows directory

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-09 21:18

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-09 21:18

Reported

2024-11-09 21:20

Platform

win7-20240903-en

Max time kernel

149s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\38bba5c6e71758181882cda76ee9b0e9c8ad92f5dbe7fcaf01bbb9ddb573f0ad.exe"

Signatures

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\microsofthelp.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\microsofthelp.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\38bba5c6e71758181882cda76ee9b0e9c8ad92f5dbe7fcaf01bbb9ddb573f0ad.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\38bba5c6e71758181882cda76ee9b0e9c8ad92f5dbe7fcaf01bbb9ddb573f0ad.exe N/A
File created C:\Windows\HidePlugin.dll C:\Windows\microsofthelp.exe N/A

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\38bba5c6e71758181882cda76ee9b0e9c8ad92f5dbe7fcaf01bbb9ddb573f0ad.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\38bba5c6e71758181882cda76ee9b0e9c8ad92f5dbe7fcaf01bbb9ddb573f0ad.exe

"C:\Users\Admin\AppData\Local\Temp\38bba5c6e71758181882cda76ee9b0e9c8ad92f5dbe7fcaf01bbb9ddb573f0ad.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2996-0-0x0000000000400000-0x0000000000410000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 ce5e5602fb1090521de9231db10b2fca
SHA1 cf9add26af19bafddef73fda508bb64d97e50f93
SHA256 fb88c3ff96ae4aba992132e92eecc970ed6d91669c36be01cf581b4ae8bc9249
SHA512 4a6671776426182a1ebfc484b40348651095a9662f26b9901821f28bc53e6f66c9a4f43c2331871f9f384dd9754069792ce01df5c7cd78244825bf73578b203e

memory/2996-6-0x0000000000400000-0x0000000000410000-memory.dmp

memory/2488-9-0x0000000000400000-0x0000000000410000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-09 21:18

Reported

2024-11-09 21:20

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

137s

Command Line

"C:\Users\Admin\AppData\Local\Temp\38bba5c6e71758181882cda76ee9b0e9c8ad92f5dbe7fcaf01bbb9ddb573f0ad.exe"

Signatures

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\microsofthelp.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\microsofthelp.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\38bba5c6e71758181882cda76ee9b0e9c8ad92f5dbe7fcaf01bbb9ddb573f0ad.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\38bba5c6e71758181882cda76ee9b0e9c8ad92f5dbe7fcaf01bbb9ddb573f0ad.exe N/A
File created C:\Windows\HidePlugin.dll C:\Windows\microsofthelp.exe N/A

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\38bba5c6e71758181882cda76ee9b0e9c8ad92f5dbe7fcaf01bbb9ddb573f0ad.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\microsofthelp.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\38bba5c6e71758181882cda76ee9b0e9c8ad92f5dbe7fcaf01bbb9ddb573f0ad.exe

"C:\Users\Admin\AppData\Local\Temp\38bba5c6e71758181882cda76ee9b0e9c8ad92f5dbe7fcaf01bbb9ddb573f0ad.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 101.210.23.2.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 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 75.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 66.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/4760-0-0x0000000000400000-0x0000000000410000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 ce5e5602fb1090521de9231db10b2fca
SHA1 cf9add26af19bafddef73fda508bb64d97e50f93
SHA256 fb88c3ff96ae4aba992132e92eecc970ed6d91669c36be01cf581b4ae8bc9249
SHA512 4a6671776426182a1ebfc484b40348651095a9662f26b9901821f28bc53e6f66c9a4f43c2331871f9f384dd9754069792ce01df5c7cd78244825bf73578b203e

memory/4760-4-0x0000000000400000-0x0000000000410000-memory.dmp

memory/1136-6-0x0000000000400000-0x0000000000410000-memory.dmp