Malware Analysis Report

2024-09-23 13:15

Sample ID 240613-a67knaxgna
Target 2024-06-13_b631cd190c5eb7c7a1159f9ea2629adf_xiaoba
SHA256 7f3c78a8416a559365033942ad05c8f660d3da3f71439e63e3cbdc3ad3de44f7
Tags
bootkit persistence upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

7f3c78a8416a559365033942ad05c8f660d3da3f71439e63e3cbdc3ad3de44f7

Threat Level: Known bad

The file 2024-06-13_b631cd190c5eb7c7a1159f9ea2629adf_xiaoba was found to be: Known bad.

Malicious Activity Summary

bootkit persistence upx

UPX dump on OEP (original entry point)

UPX dump on OEP (original entry point)

UPX packed file

Writes to the Master Boot Record (MBR)

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-13 00:50

Signatures

UPX dump on OEP (original entry point)

Description Indicator Process Target
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Unsigned PE

Description Indicator Process Target
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Analysis: behavioral1

Detonation Overview

Submitted

2024-06-13 00:50

Reported

2024-06-13 00:53

Platform

win7-20240221-en

Max time kernel

119s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_b631cd190c5eb7c7a1159f9ea2629adf_xiaoba.exe"

Signatures

UPX dump on OEP (original entry point)

Description Indicator Process Target
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UPX packed file

upx
Description Indicator Process Target
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Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\2024-06-13_b631cd190c5eb7c7a1159f9ea2629adf_xiaoba.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_b631cd190c5eb7c7a1159f9ea2629adf_xiaoba.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_b631cd190c5eb7c7a1159f9ea2629adf_xiaoba.exe"

Network

N/A

Files

memory/2964-2-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-1-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-0-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-23-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-34-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-42-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-26-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-39-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-36-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-45-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-47-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-44-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-32-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-30-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-28-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-20-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-18-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-17-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-12-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-10-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-8-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-6-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-4-0x0000000000310000-0x000000000034E000-memory.dmp

memory/2964-48-0x0000000000310000-0x000000000034E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-13 00:50

Reported

2024-06-13 00:53

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

51s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_b631cd190c5eb7c7a1159f9ea2629adf_xiaoba.exe"

Signatures

UPX dump on OEP (original entry point)

Description Indicator Process Target
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UPX packed file

upx
Description Indicator Process Target
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Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\2024-06-13_b631cd190c5eb7c7a1159f9ea2629adf_xiaoba.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\2024-06-13_b631cd190c5eb7c7a1159f9ea2629adf_xiaoba.exe

"C:\Users\Admin\AppData\Local\Temp\2024-06-13_b631cd190c5eb7c7a1159f9ea2629adf_xiaoba.exe"

Network

Files

memory/2900-1-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-0-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-33-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-43-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-44-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-41-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-39-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-37-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-35-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-32-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-29-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-28-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-24-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-21-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-11-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-9-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-2-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-25-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-20-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-17-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-15-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-13-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-8-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-5-0x0000000000720000-0x000000000075E000-memory.dmp

memory/2900-3-0x0000000000720000-0x000000000075E000-memory.dmp