Malware Analysis Report

2025-08-10 15:03

Sample ID 241111-m18lzs1rhp
Target 2f3d95e0eaa6d813ec9a3694a16a8d5d6b12217c42393289002558734a2995c7N.exe
SHA256 9b7ef4ae63826909a6587cd2d152026a5e7c1ed0af7a61ff98ac11c1af099937
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

9b7ef4ae63826909a6587cd2d152026a5e7c1ed0af7a61ff98ac11c1af099937

Threat Level: Shows suspicious behavior

The file 2f3d95e0eaa6d813ec9a3694a16a8d5d6b12217c42393289002558734a2995c7N.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

2024-11-11 10:57

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-11 10:57

Reported

2024-11-11 10:59

Platform

win7-20240903-en

Max time kernel

119s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2f3d95e0eaa6d813ec9a3694a16a8d5d6b12217c42393289002558734a2995c7N.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\2f3d95e0eaa6d813ec9a3694a16a8d5d6b12217c42393289002558734a2995c7N.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\2f3d95e0eaa6d813ec9a3694a16a8d5d6b12217c42393289002558734a2995c7N.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\2f3d95e0eaa6d813ec9a3694a16a8d5d6b12217c42393289002558734a2995c7N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2f3d95e0eaa6d813ec9a3694a16a8d5d6b12217c42393289002558734a2995c7N.exe

"C:\Users\Admin\AppData\Local\Temp\2f3d95e0eaa6d813ec9a3694a16a8d5d6b12217c42393289002558734a2995c7N.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2980-0-0x0000000000400000-0x0000000000403000-memory.dmp

memory/2980-6-0x0000000000400000-0x0000000000403000-memory.dmp

memory/2192-8-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 54db70ea19d0383960c90ca83ed7880b
SHA1 bd73289604e1e2cc7e4b7858f21c0af394dd4061
SHA256 cfde1f58e9655b0bed4832993319f06e80d3a29df68b1960f9654d6c2ad36459
SHA512 421f5fa1f360f09027801831aa27ed09588dfb89d69909c29d8e612d97d10d1e015fb88c6d7f652d5a657295e8090b24f2ae7045f116aecdf7af5f1856899be2

memory/2192-10-0x0000000000400000-0x0000000000403000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-11 10:57

Reported

2024-11-11 10:59

Platform

win10v2004-20241007-en

Max time kernel

119s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2f3d95e0eaa6d813ec9a3694a16a8d5d6b12217c42393289002558734a2995c7N.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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\2f3d95e0eaa6d813ec9a3694a16a8d5d6b12217c42393289002558734a2995c7N.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\2f3d95e0eaa6d813ec9a3694a16a8d5d6b12217c42393289002558734a2995c7N.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\microsofthelp.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2f3d95e0eaa6d813ec9a3694a16a8d5d6b12217c42393289002558734a2995c7N.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2f3d95e0eaa6d813ec9a3694a16a8d5d6b12217c42393289002558734a2995c7N.exe

"C:\Users\Admin\AppData\Local\Temp\2f3d95e0eaa6d813ec9a3694a16a8d5d6b12217c42393289002558734a2995c7N.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 75.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp

Files

memory/2580-0-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 54db70ea19d0383960c90ca83ed7880b
SHA1 bd73289604e1e2cc7e4b7858f21c0af394dd4061
SHA256 cfde1f58e9655b0bed4832993319f06e80d3a29df68b1960f9654d6c2ad36459
SHA512 421f5fa1f360f09027801831aa27ed09588dfb89d69909c29d8e612d97d10d1e015fb88c6d7f652d5a657295e8090b24f2ae7045f116aecdf7af5f1856899be2

memory/2580-4-0x0000000000400000-0x0000000000403000-memory.dmp

memory/2308-6-0x0000000000400000-0x0000000000403000-memory.dmp