Malware Analysis Report

2025-08-11 01:20

Sample ID 231222-da4qnsbbf7
Target 55fd56d09582490e7899803e48d55139
SHA256 d4141c2edd7ddf6aa1fd6acb9d2b81a254f97eb9ab9a52a4422f1750c8029374
Tags
vmprotect
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

d4141c2edd7ddf6aa1fd6acb9d2b81a254f97eb9ab9a52a4422f1750c8029374

Threat Level: Shows suspicious behavior

The file 55fd56d09582490e7899803e48d55139 was found to be: Shows suspicious behavior.

Malicious Activity Summary

vmprotect

VMProtect packed file

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-12-22 02:49

Signatures

VMProtect packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-12-22 02:49

Reported

2023-12-23 06:14

Platform

win7-20231215-en

Max time kernel

141s

Max time network

126s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\55fd56d09582490e7899803e48d55139.dll,#1

Signatures

VMProtect packed file

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2908 wrote to memory of 2424 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2908 wrote to memory of 2424 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2908 wrote to memory of 2424 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2908 wrote to memory of 2424 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2908 wrote to memory of 2424 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2908 wrote to memory of 2424 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2908 wrote to memory of 2424 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\55fd56d09582490e7899803e48d55139.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\55fd56d09582490e7899803e48d55139.dll,#1

Network

N/A

Files

memory/2424-0-0x0000000001DF0000-0x0000000001FA9000-memory.dmp

memory/2424-1-0x0000000001DF0000-0x0000000001FA9000-memory.dmp

memory/2424-2-0x0000000001DF0000-0x0000000001FA9000-memory.dmp

memory/2424-3-0x0000000001DF0000-0x0000000001FA9000-memory.dmp

memory/2424-4-0x0000000001DF0000-0x0000000001FA9000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-22 02:49

Reported

2023-12-23 06:14

Platform

win10v2004-20231222-en

Max time kernel

141s

Max time network

126s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\55fd56d09582490e7899803e48d55139.dll,#1

Signatures

VMProtect packed file

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1116 wrote to memory of 4848 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1116 wrote to memory of 4848 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1116 wrote to memory of 4848 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\55fd56d09582490e7899803e48d55139.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\55fd56d09582490e7899803e48d55139.dll,#1

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 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 5.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

memory/4848-0-0x0000000000CB0000-0x0000000000E69000-memory.dmp

memory/4848-1-0x0000000000CB0000-0x0000000000E69000-memory.dmp

memory/4848-2-0x0000000000CB0000-0x0000000000E69000-memory.dmp

memory/4848-3-0x0000000000CB0000-0x0000000000E69000-memory.dmp