Malware Analysis Report

2025-01-22 12:41

Sample ID 240622-ybwrnswbmk
Target 03a74df80bee1dc10a048390eb2c4f51_JaffaCakes118
SHA256 ea0ee06cf0e5c19a7f1764643a684b0eba187258065413aee8b6d0ed4a62d346
Tags
bootkit persistence aspackv2
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

ea0ee06cf0e5c19a7f1764643a684b0eba187258065413aee8b6d0ed4a62d346

Threat Level: Shows suspicious behavior

The file 03a74df80bee1dc10a048390eb2c4f51_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

bootkit persistence aspackv2

ASPack v2.12-2.42

Writes to the Master Boot Record (MBR)

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-22 19:37

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 19:37

Reported

2024-06-22 19:39

Platform

win7-20240611-en

Max time kernel

140s

Max time network

119s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\03a74df80bee1dc10a048390eb2c4f51_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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2124 wrote to memory of 2856 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2124 wrote to memory of 2856 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2124 wrote to memory of 2856 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2124 wrote to memory of 2856 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2124 wrote to memory of 2856 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2124 wrote to memory of 2856 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2124 wrote to memory of 2856 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\03a74df80bee1dc10a048390eb2c4f51_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\03a74df80bee1dc10a048390eb2c4f51_JaffaCakes118.dll,#1

Network

N/A

Files

memory/2856-1-0x0000000000700000-0x000000000074A000-memory.dmp

memory/2856-0-0x0000000000700000-0x000000000074A000-memory.dmp

memory/2856-4-0x0000000000700000-0x000000000074A000-memory.dmp

memory/2856-5-0x0000000000700000-0x000000000074A000-memory.dmp

memory/2856-3-0x0000000000726000-0x0000000000727000-memory.dmp

memory/2856-2-0x0000000000700000-0x000000000074A000-memory.dmp

memory/2856-8-0x0000000000726000-0x0000000000727000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-22 19:37

Reported

2024-06-22 19:39

Platform

win10v2004-20240508-en

Max time kernel

141s

Max time network

99s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\03a74df80bee1dc10a048390eb2c4f51_JaffaCakes118.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2972 wrote to memory of 2068 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2972 wrote to memory of 2068 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2972 wrote to memory of 2068 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\03a74df80bee1dc10a048390eb2c4f51_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\03a74df80bee1dc10a048390eb2c4f51_JaffaCakes118.dll,#1

Network

Country Destination Domain Proto
US 52.111.227.14:443 tcp

Files

memory/2068-0-0x0000000000400000-0x000000000044A000-memory.dmp

memory/2068-1-0x0000000002740000-0x0000000002783000-memory.dmp

memory/2068-8-0x0000000002730000-0x0000000002731000-memory.dmp

memory/2068-7-0x00000000027C0000-0x00000000027C1000-memory.dmp

memory/2068-6-0x00000000028E0000-0x00000000028E1000-memory.dmp

memory/2068-5-0x00000000028F0000-0x00000000028F1000-memory.dmp

memory/2068-4-0x0000000000CC0000-0x0000000000CC1000-memory.dmp

memory/2068-3-0x0000000000CD0000-0x0000000000CD1000-memory.dmp

memory/2068-2-0x0000000002920000-0x0000000002921000-memory.dmp

memory/2068-19-0x00000000029A0000-0x00000000029A1000-memory.dmp

memory/2068-18-0x00000000029B0000-0x00000000029B1000-memory.dmp

memory/2068-17-0x00000000029C0000-0x00000000029C1000-memory.dmp

memory/2068-16-0x0000000002960000-0x0000000002961000-memory.dmp

memory/2068-15-0x0000000002950000-0x0000000002951000-memory.dmp

memory/2068-14-0x0000000002990000-0x0000000002991000-memory.dmp

memory/2068-13-0x0000000002970000-0x0000000002971000-memory.dmp

memory/2068-12-0x0000000002980000-0x0000000002983000-memory.dmp

memory/2068-11-0x0000000002940000-0x0000000002941000-memory.dmp

memory/2068-10-0x00000000027B0000-0x00000000027B1000-memory.dmp

memory/2068-9-0x0000000002900000-0x0000000002901000-memory.dmp

memory/2068-20-0x0000000000400000-0x000000000044A000-memory.dmp

memory/2068-21-0x0000000002740000-0x0000000002783000-memory.dmp