Malware Analysis Report

2025-08-05 21:25

Sample ID 231222-avklragabr
Target 37d3e2d42cdb203a31663d67d609a2ea
SHA256 02b976c87234fd21971c6685f24aff1fd7861cc274224478b3a00e1602e8fb24
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

02b976c87234fd21971c6685f24aff1fd7861cc274224478b3a00e1602e8fb24

Threat Level: Shows suspicious behavior

The file 37d3e2d42cdb203a31663d67d609a2ea 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 00:31

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 00:31

Reported

2023-12-22 03:45

Platform

win7-20231215-en

Max time kernel

140s

Max time network

118s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\37d3e2d42cdb203a31663d67d609a2ea.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 2516 wrote to memory of 1948 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2516 wrote to memory of 1948 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2516 wrote to memory of 1948 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2516 wrote to memory of 1948 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2516 wrote to memory of 1948 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2516 wrote to memory of 1948 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2516 wrote to memory of 1948 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\37d3e2d42cdb203a31663d67d609a2ea.dll,#1

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\37d3e2d42cdb203a31663d67d609a2ea.dll,#1

Network

N/A

Files

memory/1948-0-0x00000000020D0000-0x0000000002289000-memory.dmp

memory/1948-1-0x00000000020D0000-0x0000000002289000-memory.dmp

memory/1948-2-0x00000000020D0000-0x0000000002289000-memory.dmp

memory/1948-3-0x00000000020D0000-0x0000000002289000-memory.dmp

memory/1948-4-0x00000000020D0000-0x0000000002289000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-12-22 00:31

Reported

2023-12-22 03:46

Platform

win10v2004-20231215-en

Max time kernel

156s

Max time network

159s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\37d3e2d42cdb203a31663d67d609a2ea.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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2564 wrote to memory of 2328 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2564 wrote to memory of 2328 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2564 wrote to memory of 2328 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\37d3e2d42cdb203a31663d67d609a2ea.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\37d3e2d42cdb203a31663d67d609a2ea.dll,#1

Network

Country Destination Domain Proto
US 138.91.171.81:80 tcp
US 8.8.8.8:53 3.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/2328-0-0x0000000000400000-0x00000000005B9000-memory.dmp

memory/2328-1-0x0000000000400000-0x00000000005B9000-memory.dmp

memory/2328-2-0x0000000000400000-0x00000000005B9000-memory.dmp