Malware Analysis Report

2025-08-05 15:48

Sample ID 240528-znejlada76
Target 42e4c2f7cae39896dd96fe8010ab45c739d180365e93019b20293f39e1edad7f
SHA256 42e4c2f7cae39896dd96fe8010ab45c739d180365e93019b20293f39e1edad7f
Tags
upx
score
10/10

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
10/10

SHA256

42e4c2f7cae39896dd96fe8010ab45c739d180365e93019b20293f39e1edad7f

Threat Level: Known bad

The file 42e4c2f7cae39896dd96fe8010ab45c739d180365e93019b20293f39e1edad7f was found to be: Known bad.

Malicious Activity Summary

upx

UPX dump on OEP (original entry point)

UPX dump on OEP (original entry point)

UPX packed file

ACProtect 1.3x - 1.4x DLL software

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-05-28 20:51

Signatures

UPX dump on OEP (original entry point)

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

ACProtect 1.3x - 1.4x DLL software

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

UPX packed file

upx
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
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-28 20:51

Reported

2024-05-28 20:54

Platform

win7-20240221-en

Max time kernel

118s

Max time network

125s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\42e4c2f7cae39896dd96fe8010ab45c739d180365e93019b20293f39e1edad7f.dll,#1

Signatures

UPX dump on OEP (original entry point)

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

UPX packed file

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2508 wrote to memory of 2744 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2508 wrote to memory of 2744 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2508 wrote to memory of 2744 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2508 wrote to memory of 2744 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2508 wrote to memory of 2744 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2508 wrote to memory of 2744 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2508 wrote to memory of 2744 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\42e4c2f7cae39896dd96fe8010ab45c739d180365e93019b20293f39e1edad7f.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\42e4c2f7cae39896dd96fe8010ab45c739d180365e93019b20293f39e1edad7f.dll,#1

Network

N/A

Files

memory/2744-1-0x000000006D040000-0x000000006D05E000-memory.dmp

memory/2744-0-0x000000006D040000-0x000000006D05E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-28 20:51

Reported

2024-05-28 20:54

Platform

win10v2004-20240426-en

Max time kernel

150s

Max time network

151s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\42e4c2f7cae39896dd96fe8010ab45c739d180365e93019b20293f39e1edad7f.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3636 wrote to memory of 4592 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3636 wrote to memory of 4592 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3636 wrote to memory of 4592 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\42e4c2f7cae39896dd96fe8010ab45c739d180365e93019b20293f39e1edad7f.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\42e4c2f7cae39896dd96fe8010ab45c739d180365e93019b20293f39e1edad7f.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 224.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 193.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/4592-0-0x000000006D040000-0x000000006D05E000-memory.dmp