Malware Analysis Report

2025-04-03 13:03

Sample ID 241109-1w89lswlgm
Target 16bc263c0f766d5c1e40d1dfbc081b6212ca7341e720629b16f36baafb6da2efN
SHA256 16bc263c0f766d5c1e40d1dfbc081b6212ca7341e720629b16f36baafb6da2ef
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

16bc263c0f766d5c1e40d1dfbc081b6212ca7341e720629b16f36baafb6da2ef

Threat Level: Shows suspicious behavior

The file 16bc263c0f766d5c1e40d1dfbc081b6212ca7341e720629b16f36baafb6da2efN 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 22:01

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-09 22:01

Reported

2024-11-09 22:03

Platform

win7-20240903-en

Max time kernel

119s

Max time network

16s

Command Line

"C:\Users\Admin\AppData\Local\Temp\16bc263c0f766d5c1e40d1dfbc081b6212ca7341e720629b16f36baafb6da2efN.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\16bc263c0f766d5c1e40d1dfbc081b6212ca7341e720629b16f36baafb6da2efN.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\16bc263c0f766d5c1e40d1dfbc081b6212ca7341e720629b16f36baafb6da2efN.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\16bc263c0f766d5c1e40d1dfbc081b6212ca7341e720629b16f36baafb6da2efN.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\16bc263c0f766d5c1e40d1dfbc081b6212ca7341e720629b16f36baafb6da2efN.exe

"C:\Users\Admin\AppData\Local\Temp\16bc263c0f766d5c1e40d1dfbc081b6212ca7341e720629b16f36baafb6da2efN.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2092-0-0x0000000000400000-0x0000000000403000-memory.dmp

memory/2092-6-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 66659545049a13fe418a55791e1a075e
SHA1 26ee3b4c7c59c8c24cbac0ce35b65d389bcef3b6
SHA256 de3d5bcc6f51207fe8210728e81314819a63da492f475b5f2c69aadc073987eb
SHA512 ab4edfa8fbbf6ef1c39ef5c2b8f91046ad858fa691033281c7bfaee91fee51b722ca31f275eb1de8f8cf5342ff30fc075097e5acd3f76c6e8a2a552b62b865d2

memory/1240-8-0x0000000000400000-0x0000000000403000-memory.dmp

memory/1240-10-0x0000000000400000-0x0000000000403000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-09 22:01

Reported

2024-11-09 22:03

Platform

win10v2004-20241007-en

Max time kernel

119s

Max time network

96s

Command Line

"C:\Users\Admin\AppData\Local\Temp\16bc263c0f766d5c1e40d1dfbc081b6212ca7341e720629b16f36baafb6da2efN.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\16bc263c0f766d5c1e40d1dfbc081b6212ca7341e720629b16f36baafb6da2efN.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\16bc263c0f766d5c1e40d1dfbc081b6212ca7341e720629b16f36baafb6da2efN.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\16bc263c0f766d5c1e40d1dfbc081b6212ca7341e720629b16f36baafb6da2efN.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\16bc263c0f766d5c1e40d1dfbc081b6212ca7341e720629b16f36baafb6da2efN.exe

"C:\Users\Admin\AppData\Local\Temp\16bc263c0f766d5c1e40d1dfbc081b6212ca7341e720629b16f36baafb6da2efN.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 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.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 8.8.8.8:53 104.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/536-0-0x0000000000400000-0x0000000000403000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 66659545049a13fe418a55791e1a075e
SHA1 26ee3b4c7c59c8c24cbac0ce35b65d389bcef3b6
SHA256 de3d5bcc6f51207fe8210728e81314819a63da492f475b5f2c69aadc073987eb
SHA512 ab4edfa8fbbf6ef1c39ef5c2b8f91046ad858fa691033281c7bfaee91fee51b722ca31f275eb1de8f8cf5342ff30fc075097e5acd3f76c6e8a2a552b62b865d2

memory/536-4-0x0000000000400000-0x0000000000403000-memory.dmp

memory/4164-6-0x0000000000400000-0x0000000000403000-memory.dmp