Malware Analysis Report

2025-03-14 23:27

Sample ID 240407-wx4cjabb57
Target 06a91e8e1ac6486de2e39456f2d4162af7ecb982d6edd812cd5c8f0fc4385f4f
SHA256 06a91e8e1ac6486de2e39456f2d4162af7ecb982d6edd812cd5c8f0fc4385f4f
Tags
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

06a91e8e1ac6486de2e39456f2d4162af7ecb982d6edd812cd5c8f0fc4385f4f

Threat Level: Shows suspicious behavior

The file 06a91e8e1ac6486de2e39456f2d4162af7ecb982d6edd812cd5c8f0fc4385f4f was found to be: Shows suspicious behavior.

Malicious Activity Summary

persistence

Deletes itself

Executes dropped EXE

Adds Run key to start application

Drops file in Windows directory

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-07 18:18

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-07 18:18

Reported

2024-04-07 18:21

Platform

win7-20240215-en

Max time kernel

149s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\06a91e8e1ac6486de2e39456f2d4162af7ecb982d6edd812cd5c8f0fc4385f4f.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-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\06a91e8e1ac6486de2e39456f2d4162af7ecb982d6edd812cd5c8f0fc4385f4f.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\microsofthelp.exe C:\Users\Admin\AppData\Local\Temp\06a91e8e1ac6486de2e39456f2d4162af7ecb982d6edd812cd5c8f0fc4385f4f.exe N/A
File created C:\Windows\HidePlugin.dll C:\Windows\microsofthelp.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\06a91e8e1ac6486de2e39456f2d4162af7ecb982d6edd812cd5c8f0fc4385f4f.exe

"C:\Users\Admin\AppData\Local\Temp\06a91e8e1ac6486de2e39456f2d4162af7ecb982d6edd812cd5c8f0fc4385f4f.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

N/A

Files

memory/2356-0-0x0000000000400000-0x0000000000410000-memory.dmp

memory/2356-6-0x0000000000400000-0x0000000000410000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 a46b4792b18551b4e1314d7baae2daf0
SHA1 78ccb067b4e2d3004f81f4086f324caee54fe07d
SHA256 16a6af0747f571d83b643f4794e624dcec3bfe8d134333e9e9201eaa5e350fee
SHA512 109692607f4594826647cbddfa8059a36320fc5051127ded8a357c6ec8ce8e511109cacb0a538ba28558aa23245526d7a0e699de266a3484d15ca5a1d57ed25c

memory/2356-8-0x00000000002A0000-0x00000000002B0000-memory.dmp

memory/2740-9-0x0000000000400000-0x0000000000410000-memory.dmp

memory/2740-11-0x0000000000400000-0x0000000000410000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-07 18:18

Reported

2024-04-07 18:21

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

153s

Command Line

"C:\Users\Admin\AppData\Local\Temp\06a91e8e1ac6486de2e39456f2d4162af7ecb982d6edd812cd5c8f0fc4385f4f.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-1-5-21-557049126-2506969350-2798870634-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\microsofthelp = "C:\\Windows\\microsofthelp.exe" C:\Users\Admin\AppData\Local\Temp\06a91e8e1ac6486de2e39456f2d4162af7ecb982d6edd812cd5c8f0fc4385f4f.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\06a91e8e1ac6486de2e39456f2d4162af7ecb982d6edd812cd5c8f0fc4385f4f.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\06a91e8e1ac6486de2e39456f2d4162af7ecb982d6edd812cd5c8f0fc4385f4f.exe

"C:\Users\Admin\AppData\Local\Temp\06a91e8e1ac6486de2e39456f2d4162af7ecb982d6edd812cd5c8f0fc4385f4f.exe"

C:\Windows\microsofthelp.exe

"C:\Windows\microsofthelp.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 203.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 159.113.53.23.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 241.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 131.109.69.13.in-addr.arpa udp

Files

memory/4688-0-0x0000000000400000-0x0000000000410000-memory.dmp

C:\Windows\microsofthelp.exe

MD5 a46b4792b18551b4e1314d7baae2daf0
SHA1 78ccb067b4e2d3004f81f4086f324caee54fe07d
SHA256 16a6af0747f571d83b643f4794e624dcec3bfe8d134333e9e9201eaa5e350fee
SHA512 109692607f4594826647cbddfa8059a36320fc5051127ded8a357c6ec8ce8e511109cacb0a538ba28558aa23245526d7a0e699de266a3484d15ca5a1d57ed25c

memory/4688-4-0x0000000000400000-0x0000000000410000-memory.dmp

memory/1084-6-0x0000000000400000-0x0000000000410000-memory.dmp

memory/1084-7-0x0000000000400000-0x0000000000410000-memory.dmp