Malware Analysis Report

2025-08-05 09:36

Sample ID 240611-b5lr8szajh
Target ab4efbdce824f713d14298e2ed11f54d6ea3727c9c2b330719a21374e2002fdf
SHA256 ab4efbdce824f713d14298e2ed11f54d6ea3727c9c2b330719a21374e2002fdf
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

ab4efbdce824f713d14298e2ed11f54d6ea3727c9c2b330719a21374e2002fdf

Threat Level: Known bad

The file ab4efbdce824f713d14298e2ed11f54d6ea3727c9c2b330719a21374e2002fdf 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

Program crash

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-06-11 01:43

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

2024-06-11 01:43

Reported

2024-06-11 01:46

Platform

win7-20240221-en

Max time kernel

140s

Max time network

118s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ab4efbdce824f713d14298e2ed11f54d6ea3727c9c2b330719a21374e2002fdf.dll,#1

Signatures

UPX dump on OEP (original entry point)

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

UPX packed file

upx
Description Indicator Process Target
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

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ab4efbdce824f713d14298e2ed11f54d6ea3727c9c2b330719a21374e2002fdf.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ab4efbdce824f713d14298e2ed11f54d6ea3727c9c2b330719a21374e2002fdf.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1196 -s 308

Network

N/A

Files

memory/1196-0-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1196-1-0x0000000000070000-0x0000000000071000-memory.dmp

memory/1196-7-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-11 01:43

Reported

2024-06-11 01:46

Platform

win10v2004-20240508-en

Max time kernel

140s

Max time network

52s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ab4efbdce824f713d14298e2ed11f54d6ea3727c9c2b330719a21374e2002fdf.dll,#1

Signatures

UPX dump on OEP (original entry point)

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

UPX packed file

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

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 940 wrote to memory of 3024 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 940 wrote to memory of 3024 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 940 wrote to memory of 3024 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\ab4efbdce824f713d14298e2ed11f54d6ea3727c9c2b330719a21374e2002fdf.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\ab4efbdce824f713d14298e2ed11f54d6ea3727c9c2b330719a21374e2002fdf.dll,#1

Network

Files

memory/3024-0-0x0000000010000000-0x0000000010030000-memory.dmp

memory/3024-1-0x0000000010000000-0x0000000010030000-memory.dmp