Malware Analysis Report

2025-04-03 12:28

Sample ID 241109-24t1bsthqe
Target 9dd972c79408d0f2271ff0238645663d4db09f0b17a11d63a9be6535d3b0b685N
SHA256 9dd972c79408d0f2271ff0238645663d4db09f0b17a11d63a9be6535d3b0b685
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

9dd972c79408d0f2271ff0238645663d4db09f0b17a11d63a9be6535d3b0b685

Threat Level: Shows suspicious behavior

The file 9dd972c79408d0f2271ff0238645663d4db09f0b17a11d63a9be6535d3b0b685N 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

2024-11-09 23:08

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-09 23:08

Reported

2024-11-09 23:10

Platform

win7-20240729-en

Max time kernel

119s

Max time network

16s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9dd972c79408d0f2271ff0238645663d4db09f0b17a11d63a9be6535d3b0b685N.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\9dd972c79408d0f2271ff0238645663d4db09f0b17a11d63a9be6535d3b0b685N.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\9dd972c79408d0f2271ff0238645663d4db09f0b17a11d63a9be6535d3b0b685N.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\9dd972c79408d0f2271ff0238645663d4db09f0b17a11d63a9be6535d3b0b685N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\9dd972c79408d0f2271ff0238645663d4db09f0b17a11d63a9be6535d3b0b685N.exe

"C:\Users\Admin\AppData\Local\Temp\9dd972c79408d0f2271ff0238645663d4db09f0b17a11d63a9be6535d3b0b685N.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/1508-0-0x0000000000400000-0x0000000000403000-memory.dmp

memory/1508-6-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 51d9df37e4f0314f6e53796e262c2893
SHA1 807b35a6baccadb2fb0ac42e34d9a4d9602a12fe
SHA256 40c23cd82e88c205a5778cdd4cce32ca0af14269aa1ea8b0946bde7d05e5c242
SHA512 3dffcfe1aa5cfb7c1c368ddde9b03d5d1e84512d1d364b9da813a52cde3a6168ecadcff74aa5c179e87ca0470ff99fad7ef5901bb414e8916b2b94202ca6d1c8

memory/2916-9-0x0000000000400000-0x0000000000403000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-09 23:08

Reported

2024-11-09 23:10

Platform

win10v2004-20241007-en

Max time kernel

119s

Max time network

97s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9dd972c79408d0f2271ff0238645663d4db09f0b17a11d63a9be6535d3b0b685N.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\9dd972c79408d0f2271ff0238645663d4db09f0b17a11d63a9be6535d3b0b685N.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\9dd972c79408d0f2271ff0238645663d4db09f0b17a11d63a9be6535d3b0b685N.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\9dd972c79408d0f2271ff0238645663d4db09f0b17a11d63a9be6535d3b0b685N.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\9dd972c79408d0f2271ff0238645663d4db09f0b17a11d63a9be6535d3b0b685N.exe

"C:\Users\Admin\AppData\Local\Temp\9dd972c79408d0f2271ff0238645663d4db09f0b17a11d63a9be6535d3b0b685N.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 74.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/2856-0-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 51d9df37e4f0314f6e53796e262c2893
SHA1 807b35a6baccadb2fb0ac42e34d9a4d9602a12fe
SHA256 40c23cd82e88c205a5778cdd4cce32ca0af14269aa1ea8b0946bde7d05e5c242
SHA512 3dffcfe1aa5cfb7c1c368ddde9b03d5d1e84512d1d364b9da813a52cde3a6168ecadcff74aa5c179e87ca0470ff99fad7ef5901bb414e8916b2b94202ca6d1c8

memory/2856-4-0x0000000000400000-0x0000000000403000-memory.dmp

memory/3980-6-0x0000000000400000-0x0000000000403000-memory.dmp