Malware Analysis Report

2025-01-22 12:42

Sample ID 240622-25khaashpm
Target 0452ca3a273127a940c491a87806b047_JaffaCakes118
SHA256 adb39591aed0c681c151efebb147729edd52a8b67bad14a3d1f1635fd45ec4ac
Tags
aspackv2 bootkit persistence
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

adb39591aed0c681c151efebb147729edd52a8b67bad14a3d1f1635fd45ec4ac

Threat Level: Shows suspicious behavior

The file 0452ca3a273127a940c491a87806b047_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

aspackv2 bootkit persistence

ASPack v2.12-2.42

Writes to the Master Boot Record (MBR)

Unsigned PE

Modifies registry class

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-22 23:09

Signatures

ASPack v2.12-2.42

aspackv2
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

2024-06-22 23:09

Reported

2024-06-22 23:12

Platform

win7-20240508-en

Max time kernel

120s

Max time network

120s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0452ca3a273127a940c491a87806b047_JaffaCakes118.dll,#1

Signatures

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Windows\SysWOW64\rundll32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.key C:\Windows\SysWOW64\rundll32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ C:\Windows\SysWOW64\rundll32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2392 wrote to memory of 1916 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2392 wrote to memory of 1916 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2392 wrote to memory of 1916 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2392 wrote to memory of 1916 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2392 wrote to memory of 1916 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2392 wrote to memory of 1916 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2392 wrote to memory of 1916 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\0452ca3a273127a940c491a87806b047_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0452ca3a273127a940c491a87806b047_JaffaCakes118.dll,#1

Network

N/A

Files

memory/1916-0-0x0000000010000000-0x0000000010032000-memory.dmp

memory/1916-1-0x0000000010000000-0x0000000010032000-memory.dmp

memory/1916-2-0x000000001000D000-0x000000001000E000-memory.dmp

memory/1916-3-0x0000000010000000-0x0000000010032000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-22 23:09

Reported

2024-06-22 23:12

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

150s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0452ca3a273127a940c491a87806b047_JaffaCakes118.dll,#1

Signatures

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.key C:\Windows\SysWOW64\rundll32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ C:\Windows\SysWOW64\rundll32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4864 wrote to memory of 4472 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4864 wrote to memory of 4472 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4864 wrote to memory of 4472 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\0452ca3a273127a940c491a87806b047_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\0452ca3a273127a940c491a87806b047_JaffaCakes118.dll,#1

Network

Country Destination Domain Proto
US 23.53.113.159:80 tcp

Files

memory/4472-0-0x0000000010000000-0x0000000010032000-memory.dmp

memory/4472-1-0x0000000002100000-0x0000000002135000-memory.dmp

memory/4472-2-0x0000000002300000-0x0000000002301000-memory.dmp

memory/4472-3-0x0000000002310000-0x0000000002311000-memory.dmp

memory/4472-4-0x00000000022F0000-0x00000000022F1000-memory.dmp