Malware Analysis Report

2024-12-01 01:30

Sample ID 241110-bvc3cawjc1
Target 4b3b4a5d09bde76d8730e2945df3bf3b1b9f0c86d0d59734f591033f1a79fed0
SHA256 4b3b4a5d09bde76d8730e2945df3bf3b1b9f0c86d0d59734f591033f1a79fed0
Tags
vmprotect discovery
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

4b3b4a5d09bde76d8730e2945df3bf3b1b9f0c86d0d59734f591033f1a79fed0

Threat Level: Shows suspicious behavior

The file 4b3b4a5d09bde76d8730e2945df3bf3b1b9f0c86d0d59734f591033f1a79fed0 was found to be: Shows suspicious behavior.

Malicious Activity Summary

vmprotect discovery

VMProtect packed file

Program crash

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-10 01:27

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

2024-11-10 01:27

Reported

2024-11-10 01:30

Platform

win7-20240903-en

Max time kernel

121s

Max time network

123s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4b3b4a5d09bde76d8730e2945df3bf3b1b9f0c86d0d59734f591033f1a79fed0.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
N/A N/A N/A N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2156 wrote to memory of 2132 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2156 wrote to memory of 2132 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2156 wrote to memory of 2132 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2156 wrote to memory of 2132 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2156 wrote to memory of 2132 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2156 wrote to memory of 2132 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2156 wrote to memory of 2132 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\4b3b4a5d09bde76d8730e2945df3bf3b1b9f0c86d0d59734f591033f1a79fed0.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4b3b4a5d09bde76d8730e2945df3bf3b1b9f0c86d0d59734f591033f1a79fed0.dll,#1

Network

N/A

Files

memory/2132-0-0x0000000010000000-0x000000001086C000-memory.dmp

memory/2132-2-0x0000000010000000-0x000000001086C000-memory.dmp

memory/2132-1-0x0000000010000000-0x000000001086C000-memory.dmp

memory/2132-6-0x0000000010000000-0x000000001086C000-memory.dmp

memory/2132-3-0x0000000010000000-0x000000001086C000-memory.dmp

memory/2132-7-0x0000000010000000-0x000000001086C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-10 01:27

Reported

2024-11-10 01:30

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

138s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4b3b4a5d09bde76d8730e2945df3bf3b1b9f0c86d0d59734f591033f1a79fed0.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

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4544 wrote to memory of 5056 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4544 wrote to memory of 5056 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4544 wrote to memory of 5056 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\4b3b4a5d09bde76d8730e2945df3bf3b1b9f0c86d0d59734f591033f1a79fed0.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4b3b4a5d09bde76d8730e2945df3bf3b1b9f0c86d0d59734f591033f1a79fed0.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 5056 -ip 5056

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 5056 -s 688

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 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 75.117.19.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/5056-0-0x0000000010000000-0x000000001086C000-memory.dmp

memory/5056-1-0x0000000010000000-0x000000001086C000-memory.dmp

memory/5056-4-0x0000000010000000-0x000000001086C000-memory.dmp