Malware Analysis Report

2025-04-03 13:04

Sample ID 241109-1vbxqatbnq
Target 4a3c8dd1d716ae16de2322439014ea29acf0b900bf41ed47d86e62977c503078
SHA256 4a3c8dd1d716ae16de2322439014ea29acf0b900bf41ed47d86e62977c503078
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

4a3c8dd1d716ae16de2322439014ea29acf0b900bf41ed47d86e62977c503078

Threat Level: Shows suspicious behavior

The file 4a3c8dd1d716ae16de2322439014ea29acf0b900bf41ed47d86e62977c503078 was found to be: Shows suspicious behavior.

Malicious Activity Summary

discovery persistence

Executes dropped EXE

Deletes itself

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 21:57

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-09 21:57

Reported

2024-11-09 22:00

Platform

win7-20241010-en

Max time kernel

149s

Max time network

19s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4a3c8dd1d716ae16de2322439014ea29acf0b900bf41ed47d86e62977c503078.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\4a3c8dd1d716ae16de2322439014ea29acf0b900bf41ed47d86e62977c503078.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\4a3c8dd1d716ae16de2322439014ea29acf0b900bf41ed47d86e62977c503078.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\4a3c8dd1d716ae16de2322439014ea29acf0b900bf41ed47d86e62977c503078.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4a3c8dd1d716ae16de2322439014ea29acf0b900bf41ed47d86e62977c503078.exe

"C:\Users\Admin\AppData\Local\Temp\4a3c8dd1d716ae16de2322439014ea29acf0b900bf41ed47d86e62977c503078.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2592-0-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 280a671508ac84a003da0263a4b6be99
SHA1 dcbf24dd7c55b4dd2a5501b57c49791ae689e2f1
SHA256 0237235829417a3b3aa21f75a74aca51ab1a446c225e5a61417a3bc57d2843f1
SHA512 b280e9334c2f539d4480043d1f271a9ea81685e7d13c754d772ab9e8158431084be6704a2636759d6d02b43661e0177c8c102d3219af3ad56430938901f63620

memory/2592-6-0x0000000000400000-0x0000000000403000-memory.dmp

memory/3000-8-0x0000000000400000-0x0000000000403000-memory.dmp

memory/3000-10-0x0000000000400000-0x0000000000403000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-09 21:57

Reported

2024-11-09 22:00

Platform

win10v2004-20241007-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4a3c8dd1d716ae16de2322439014ea29acf0b900bf41ed47d86e62977c503078.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-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\4a3c8dd1d716ae16de2322439014ea29acf0b900bf41ed47d86e62977c503078.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\4a3c8dd1d716ae16de2322439014ea29acf0b900bf41ed47d86e62977c503078.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\4a3c8dd1d716ae16de2322439014ea29acf0b900bf41ed47d86e62977c503078.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\4a3c8dd1d716ae16de2322439014ea29acf0b900bf41ed47d86e62977c503078.exe

"C:\Users\Admin\AppData\Local\Temp\4a3c8dd1d716ae16de2322439014ea29acf0b900bf41ed47d86e62977c503078.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.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 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/2844-0-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 280a671508ac84a003da0263a4b6be99
SHA1 dcbf24dd7c55b4dd2a5501b57c49791ae689e2f1
SHA256 0237235829417a3b3aa21f75a74aca51ab1a446c225e5a61417a3bc57d2843f1
SHA512 b280e9334c2f539d4480043d1f271a9ea81685e7d13c754d772ab9e8158431084be6704a2636759d6d02b43661e0177c8c102d3219af3ad56430938901f63620

memory/2844-4-0x0000000000400000-0x0000000000403000-memory.dmp

memory/1464-6-0x0000000000400000-0x0000000000403000-memory.dmp