Malware Analysis Report

2025-08-10 14:57

Sample ID 241112-pcslzasekh
Target 6603a331616cec25b0e9b4d0be4d1cb356553f5ebd62d65f948ca9faa25f593fN.exe
SHA256 e588fe9e28e78e525e7e045122ff008fd8c66e2fb46dbd52c5a7375c8f9b244c
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

e588fe9e28e78e525e7e045122ff008fd8c66e2fb46dbd52c5a7375c8f9b244c

Threat Level: Shows suspicious behavior

The file 6603a331616cec25b0e9b4d0be4d1cb356553f5ebd62d65f948ca9faa25f593fN.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 12:11

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-12 12:11

Reported

2024-11-12 12:13

Platform

win7-20240903-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6603a331616cec25b0e9b4d0be4d1cb356553f5ebd62d65f948ca9faa25f593fN.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\6603a331616cec25b0e9b4d0be4d1cb356553f5ebd62d65f948ca9faa25f593fN.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\6603a331616cec25b0e9b4d0be4d1cb356553f5ebd62d65f948ca9faa25f593fN.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\6603a331616cec25b0e9b4d0be4d1cb356553f5ebd62d65f948ca9faa25f593fN.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6603a331616cec25b0e9b4d0be4d1cb356553f5ebd62d65f948ca9faa25f593fN.exe

"C:\Users\Admin\AppData\Local\Temp\6603a331616cec25b0e9b4d0be4d1cb356553f5ebd62d65f948ca9faa25f593fN.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/1876-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 32a336435e7063a3e3ef79ae96b00cfd
SHA1 cade3d3f5bd1f4666c68fcfdde2e0a6abaf3628a
SHA256 8641cb57e5fbe33df7eff8eaed0bf39cc833a8dc98593afc69e37b5345d05b9a
SHA512 c2597c61c76dcbb1c996e2f2f85e251c395c75a44d20252e36e7b1bf00b8563ac52471c21b5b3c85faf52f696261a8766d47388288e23f2982332a8f5f3c5969

memory/2416-9-0x0000000000400000-0x000000000040E000-memory.dmp

memory/1876-7-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2416-11-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-12 12:11

Reported

2024-11-12 12:13

Platform

win10v2004-20241007-en

Max time kernel

119s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6603a331616cec25b0e9b4d0be4d1cb356553f5ebd62d65f948ca9faa25f593fN.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\6603a331616cec25b0e9b4d0be4d1cb356553f5ebd62d65f948ca9faa25f593fN.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\6603a331616cec25b0e9b4d0be4d1cb356553f5ebd62d65f948ca9faa25f593fN.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\6603a331616cec25b0e9b4d0be4d1cb356553f5ebd62d65f948ca9faa25f593fN.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\6603a331616cec25b0e9b4d0be4d1cb356553f5ebd62d65f948ca9faa25f593fN.exe

"C:\Users\Admin\AppData\Local\Temp\6603a331616cec25b0e9b4d0be4d1cb356553f5ebd62d65f948ca9faa25f593fN.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 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 101.208.201.84.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp

Files

memory/4644-0-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 32a336435e7063a3e3ef79ae96b00cfd
SHA1 cade3d3f5bd1f4666c68fcfdde2e0a6abaf3628a
SHA256 8641cb57e5fbe33df7eff8eaed0bf39cc833a8dc98593afc69e37b5345d05b9a
SHA512 c2597c61c76dcbb1c996e2f2f85e251c395c75a44d20252e36e7b1bf00b8563ac52471c21b5b3c85faf52f696261a8766d47388288e23f2982332a8f5f3c5969

memory/1456-7-0x0000000000400000-0x000000000040E000-memory.dmp

memory/4644-6-0x0000000000400000-0x000000000040E000-memory.dmp

memory/1456-8-0x0000000000400000-0x000000000040E000-memory.dmp