Malware Analysis Report

2024-12-01 02:03

Sample ID 241110-brp8hawgka
Target 55e0f247e1ea8fb3ccb3acdb8584ea204627b99023d31e12700abce954a0344bN
SHA256 55e0f247e1ea8fb3ccb3acdb8584ea204627b99023d31e12700abce954a0344b
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

55e0f247e1ea8fb3ccb3acdb8584ea204627b99023d31e12700abce954a0344b

Threat Level: Shows suspicious behavior

The file 55e0f247e1ea8fb3ccb3acdb8584ea204627b99023d31e12700abce954a0344bN 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

2024-11-10 01:22

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-10 01:22

Reported

2024-11-10 01:24

Platform

win7-20240903-en

Max time kernel

119s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\55e0f247e1ea8fb3ccb3acdb8584ea204627b99023d31e12700abce954a0344bN.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\55e0f247e1ea8fb3ccb3acdb8584ea204627b99023d31e12700abce954a0344bN.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\55e0f247e1ea8fb3ccb3acdb8584ea204627b99023d31e12700abce954a0344bN.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\55e0f247e1ea8fb3ccb3acdb8584ea204627b99023d31e12700abce954a0344bN.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\55e0f247e1ea8fb3ccb3acdb8584ea204627b99023d31e12700abce954a0344bN.exe

"C:\Users\Admin\AppData\Local\Temp\55e0f247e1ea8fb3ccb3acdb8584ea204627b99023d31e12700abce954a0344bN.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2392-0-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2392-7-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 7d34f09474544db09863bacdd5e063e0
SHA1 b852a2330a217a2d5ac6ff22721a5509ee6038d8
SHA256 e1f7110da06d47ff3a1330330609f1ec8f8e76609631d5f14a54d7dbfe6bc4e0
SHA512 edc43fb26c37481030ca28f07cab40291bee0e0474c064e32a6a3098677e234e5989b4f0cf9893f8a89fd990517c9b85040bc2801c88df0e924f553a95512d3a

memory/2156-9-0x0000000000400000-0x000000000040E000-memory.dmp

memory/2156-11-0x0000000000400000-0x000000000040E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-10 01:22

Reported

2024-11-10 01:24

Platform

win10v2004-20241007-en

Max time kernel

119s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\55e0f247e1ea8fb3ccb3acdb8584ea204627b99023d31e12700abce954a0344bN.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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\55e0f247e1ea8fb3ccb3acdb8584ea204627b99023d31e12700abce954a0344bN.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\HidePlugin.dll C:\Windows\microsofthelp.exe N/A
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\55e0f247e1ea8fb3ccb3acdb8584ea204627b99023d31e12700abce954a0344bN.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\55e0f247e1ea8fb3ccb3acdb8584ea204627b99023d31e12700abce954a0344bN.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\55e0f247e1ea8fb3ccb3acdb8584ea204627b99023d31e12700abce954a0344bN.exe

"C:\Users\Admin\AppData\Local\Temp\55e0f247e1ea8fb3ccb3acdb8584ea204627b99023d31e12700abce954a0344bN.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 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 98.117.19.2.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/1876-0-0x0000000000400000-0x000000000040E000-memory.dmp

memory/4068-7-0x0000000000400000-0x000000000040E000-memory.dmp

memory/1876-6-0x0000000000400000-0x000000000040E000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 7d34f09474544db09863bacdd5e063e0
SHA1 b852a2330a217a2d5ac6ff22721a5509ee6038d8
SHA256 e1f7110da06d47ff3a1330330609f1ec8f8e76609631d5f14a54d7dbfe6bc4e0
SHA512 edc43fb26c37481030ca28f07cab40291bee0e0474c064e32a6a3098677e234e5989b4f0cf9893f8a89fd990517c9b85040bc2801c88df0e924f553a95512d3a

memory/4068-8-0x0000000000400000-0x000000000040E000-memory.dmp