Malware Analysis Report

2025-06-15 22:29

Sample ID 241109-yja5ya1cmg
Target e21e3a175e5ee1377352de93663ddb004e6eb4f6ea19bd2a5ad50d40dd781953N
SHA256 e21e3a175e5ee1377352de93663ddb004e6eb4f6ea19bd2a5ad50d40dd781953
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

e21e3a175e5ee1377352de93663ddb004e6eb4f6ea19bd2a5ad50d40dd781953

Threat Level: Shows suspicious behavior

The file e21e3a175e5ee1377352de93663ddb004e6eb4f6ea19bd2a5ad50d40dd781953N 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 19:48

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-09 19:48

Reported

2024-11-09 19:50

Platform

win7-20240903-en

Max time kernel

119s

Max time network

16s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e21e3a175e5ee1377352de93663ddb004e6eb4f6ea19bd2a5ad50d40dd781953N.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\e21e3a175e5ee1377352de93663ddb004e6eb4f6ea19bd2a5ad50d40dd781953N.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\e21e3a175e5ee1377352de93663ddb004e6eb4f6ea19bd2a5ad50d40dd781953N.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\e21e3a175e5ee1377352de93663ddb004e6eb4f6ea19bd2a5ad50d40dd781953N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\e21e3a175e5ee1377352de93663ddb004e6eb4f6ea19bd2a5ad50d40dd781953N.exe

"C:\Users\Admin\AppData\Local\Temp\e21e3a175e5ee1377352de93663ddb004e6eb4f6ea19bd2a5ad50d40dd781953N.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2440-0-0x0000000000400000-0x0000000000403000-memory.dmp

memory/2440-3-0x0000000000220000-0x0000000000223000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 cae656773d14092dfe1d7a48dd4d69b0
SHA1 d5210ecd3d7fd94c84c7b834e0e88574edb30ae8
SHA256 57c77ea5a9a112a410ae65971a8b7607d06b28618c76fcb3f917637c9afd2808
SHA512 08e3c5bbc6bffe363599f589557f15b59b38c404ab6c1e5742cf927ededdfacf16da2c022c1b79afb1def421f3e2a1b7c32ebab5fa1e96a84403d6525e4ba810

memory/2408-8-0x0000000000400000-0x0000000000403000-memory.dmp

memory/2408-10-0x0000000000400000-0x0000000000403000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-09 19:48

Reported

2024-11-09 19:50

Platform

win10v2004-20241007-en

Max time kernel

120s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\e21e3a175e5ee1377352de93663ddb004e6eb4f6ea19bd2a5ad50d40dd781953N.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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\e21e3a175e5ee1377352de93663ddb004e6eb4f6ea19bd2a5ad50d40dd781953N.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\e21e3a175e5ee1377352de93663ddb004e6eb4f6ea19bd2a5ad50d40dd781953N.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\e21e3a175e5ee1377352de93663ddb004e6eb4f6ea19bd2a5ad50d40dd781953N.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\e21e3a175e5ee1377352de93663ddb004e6eb4f6ea19bd2a5ad50d40dd781953N.exe

"C:\Users\Admin\AppData\Local\Temp\e21e3a175e5ee1377352de93663ddb004e6eb4f6ea19bd2a5ad50d40dd781953N.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 83.210.23.2.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 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 72.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp

Files

memory/4560-0-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 cae656773d14092dfe1d7a48dd4d69b0
SHA1 d5210ecd3d7fd94c84c7b834e0e88574edb30ae8
SHA256 57c77ea5a9a112a410ae65971a8b7607d06b28618c76fcb3f917637c9afd2808
SHA512 08e3c5bbc6bffe363599f589557f15b59b38c404ab6c1e5742cf927ededdfacf16da2c022c1b79afb1def421f3e2a1b7c32ebab5fa1e96a84403d6525e4ba810

memory/4560-4-0x0000000000400000-0x0000000000403000-memory.dmp

memory/4056-6-0x0000000000400000-0x0000000000403000-memory.dmp