Malware Analysis Report

2025-08-10 15:04

Sample ID 241111-m3twlsyfje
Target aa5bebfd0ab5fed71550c12b5e289b2c48740b38159e02647a0436f182601732.exe
SHA256 aa5bebfd0ab5fed71550c12b5e289b2c48740b38159e02647a0436f182601732
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

aa5bebfd0ab5fed71550c12b5e289b2c48740b38159e02647a0436f182601732

Threat Level: Shows suspicious behavior

The file aa5bebfd0ab5fed71550c12b5e289b2c48740b38159e02647a0436f182601732.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

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-11 10:59

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-11 10:59

Reported

2024-11-11 11:01

Platform

win10v2004-20241007-en

Max time kernel

119s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\aa5bebfd0ab5fed71550c12b5e289b2c48740b38159e02647a0436f182601732.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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\aa5bebfd0ab5fed71550c12b5e289b2c48740b38159e02647a0436f182601732.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\aa5bebfd0ab5fed71550c12b5e289b2c48740b38159e02647a0436f182601732.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\aa5bebfd0ab5fed71550c12b5e289b2c48740b38159e02647a0436f182601732.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\aa5bebfd0ab5fed71550c12b5e289b2c48740b38159e02647a0436f182601732.exe

"C:\Users\Admin\AppData\Local\Temp\aa5bebfd0ab5fed71550c12b5e289b2c48740b38159e02647a0436f182601732.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/4940-0-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 665616323c15cb52a66d7579129104b3
SHA1 5a99f450f406233c9de14c0707f126f1fccb4d39
SHA256 1756835ca966f8166a053328db6836d0794b6d87750b077be58b1dc55ff1a2e6
SHA512 be301d754bef437adf212bfc16dbbe3ea96c9e8e01a2f38ab4ae1e8fc841dea111ce65c24a118c9f2017d8259abffd6a1e78631aa17cedb5b1caa31dc780d1d6

memory/4940-4-0x0000000000400000-0x0000000000403000-memory.dmp

memory/3596-6-0x0000000000400000-0x0000000000403000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-11 10:59

Reported

2024-11-11 11:01

Platform

win7-20240729-en

Max time kernel

119s

Max time network

17s

Command Line

"C:\Users\Admin\AppData\Local\Temp\aa5bebfd0ab5fed71550c12b5e289b2c48740b38159e02647a0436f182601732.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\aa5bebfd0ab5fed71550c12b5e289b2c48740b38159e02647a0436f182601732.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\aa5bebfd0ab5fed71550c12b5e289b2c48740b38159e02647a0436f182601732.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\aa5bebfd0ab5fed71550c12b5e289b2c48740b38159e02647a0436f182601732.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\aa5bebfd0ab5fed71550c12b5e289b2c48740b38159e02647a0436f182601732.exe

"C:\Users\Admin\AppData\Local\Temp\aa5bebfd0ab5fed71550c12b5e289b2c48740b38159e02647a0436f182601732.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2544-0-0x0000000000400000-0x0000000000403000-memory.dmp

memory/704-8-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 665616323c15cb52a66d7579129104b3
SHA1 5a99f450f406233c9de14c0707f126f1fccb4d39
SHA256 1756835ca966f8166a053328db6836d0794b6d87750b077be58b1dc55ff1a2e6
SHA512 be301d754bef437adf212bfc16dbbe3ea96c9e8e01a2f38ab4ae1e8fc841dea111ce65c24a118c9f2017d8259abffd6a1e78631aa17cedb5b1caa31dc780d1d6

memory/2544-6-0x0000000000400000-0x0000000000403000-memory.dmp

memory/704-10-0x0000000000400000-0x0000000000403000-memory.dmp