Malware Analysis Report

2025-08-11 08:18

Sample ID 241112-nzz4wsvngl
Target c9b8e4d60ca3508538d3070fa3b50b71a80ed53d79bd024405aac3b593d5d205N.exe
SHA256 505fe20c558378fc013bb98ed9e6429f674279b5a9956571a18743751f5b766b
Tags
discovery persistence
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
7/10

SHA256

505fe20c558378fc013bb98ed9e6429f674279b5a9956571a18743751f5b766b

Threat Level: Shows suspicious behavior

The file c9b8e4d60ca3508538d3070fa3b50b71a80ed53d79bd024405aac3b593d5d205N.exe 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

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-12 11:50

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-12 11:50

Reported

2024-11-12 11:52

Platform

win10v2004-20241007-en

Max time kernel

119s

Max time network

99s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c9b8e4d60ca3508538d3070fa3b50b71a80ed53d79bd024405aac3b593d5d205N.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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\c9b8e4d60ca3508538d3070fa3b50b71a80ed53d79bd024405aac3b593d5d205N.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\c9b8e4d60ca3508538d3070fa3b50b71a80ed53d79bd024405aac3b593d5d205N.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\c9b8e4d60ca3508538d3070fa3b50b71a80ed53d79bd024405aac3b593d5d205N.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\c9b8e4d60ca3508538d3070fa3b50b71a80ed53d79bd024405aac3b593d5d205N.exe

"C:\Users\Admin\AppData\Local\Temp\c9b8e4d60ca3508538d3070fa3b50b71a80ed53d79bd024405aac3b593d5d205N.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 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 100.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/4016-0-0x0000000000400000-0x000000000040D000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 55ee38421b5d11d46d4565c3a76614dd
SHA1 f42798a3aa0951e48388d397c74a87e2c0f78a6d
SHA256 cc5af48b74bb4dc46bd12c51a12af488aabaf78495881b7348ba875e28fb8bbf
SHA512 24cfa313218f39f5ae583c2b539d28d630f4bd0ce6c836594712f8b3607a822d3e642569108a5392c22e1c0519d0396323285b398e1ddfbe361923f170d5629d

memory/4016-4-0x0000000000400000-0x000000000040D000-memory.dmp

memory/1308-6-0x0000000000400000-0x000000000040D000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-12 11:50

Reported

2024-11-12 11:52

Platform

win7-20240903-en

Max time kernel

119s

Max time network

17s

Command Line

"C:\Users\Admin\AppData\Local\Temp\c9b8e4d60ca3508538d3070fa3b50b71a80ed53d79bd024405aac3b593d5d205N.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\c9b8e4d60ca3508538d3070fa3b50b71a80ed53d79bd024405aac3b593d5d205N.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\c9b8e4d60ca3508538d3070fa3b50b71a80ed53d79bd024405aac3b593d5d205N.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\c9b8e4d60ca3508538d3070fa3b50b71a80ed53d79bd024405aac3b593d5d205N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\c9b8e4d60ca3508538d3070fa3b50b71a80ed53d79bd024405aac3b593d5d205N.exe

"C:\Users\Admin\AppData\Local\Temp\c9b8e4d60ca3508538d3070fa3b50b71a80ed53d79bd024405aac3b593d5d205N.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2600-0-0x0000000000400000-0x000000000040D000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 55ee38421b5d11d46d4565c3a76614dd
SHA1 f42798a3aa0951e48388d397c74a87e2c0f78a6d
SHA256 cc5af48b74bb4dc46bd12c51a12af488aabaf78495881b7348ba875e28fb8bbf
SHA512 24cfa313218f39f5ae583c2b539d28d630f4bd0ce6c836594712f8b3607a822d3e642569108a5392c22e1c0519d0396323285b398e1ddfbe361923f170d5629d

memory/2600-6-0x0000000000400000-0x000000000040D000-memory.dmp

memory/1628-8-0x0000000000400000-0x000000000040D000-memory.dmp

memory/1628-10-0x0000000000400000-0x000000000040D000-memory.dmp