Malware Analysis Report

2025-08-05 10:48

Sample ID 241017-a3bntasepc
Target 4feec4a1e591cc56a49f3b6873160d9f_JaffaCakes118
SHA256 064fa73975eeb785998fa53091dfcbb8fac8e350db990e00efe658bed65e5803
Tags
bootkit discovery persistence
score
6/10

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
6/10

SHA256

064fa73975eeb785998fa53091dfcbb8fac8e350db990e00efe658bed65e5803

Threat Level: Shows suspicious behavior

The file 4feec4a1e591cc56a49f3b6873160d9f_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

bootkit discovery persistence

Writes to the Master Boot Record (MBR)

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious behavior: RenamesItself

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-17 00:43

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-17 00:43

Reported

2024-10-17 00:46

Platform

win7-20240903-en

Max time kernel

0s

Max time network

4s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4feec4a1e591cc56a49f3b6873160d9f_JaffaCakes118.exe"

Signatures

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\physicaldrive0 C:\Users\Admin\AppData\Local\Temp\4feec4a1e591cc56a49f3b6873160d9f_JaffaCakes118.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\4feec4a1e591cc56a49f3b6873160d9f_JaffaCakes118.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4feec4a1e591cc56a49f3b6873160d9f_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4feec4a1e591cc56a49f3b6873160d9f_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4feec4a1e591cc56a49f3b6873160d9f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4feec4a1e591cc56a49f3b6873160d9f_JaffaCakes118.exe"

Network

N/A

Files

memory/2268-0-0x0000000000400000-0x0000000000423000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-17 00:43

Reported

2024-10-17 00:44

Platform

win10v2004-20241007-en

Max time kernel

1s

Max time network

3s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4feec4a1e591cc56a49f3b6873160d9f_JaffaCakes118.exe"

Signatures

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\physicaldrive0 C:\Users\Admin\AppData\Local\Temp\4feec4a1e591cc56a49f3b6873160d9f_JaffaCakes118.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\4feec4a1e591cc56a49f3b6873160d9f_JaffaCakes118.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4feec4a1e591cc56a49f3b6873160d9f_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4feec4a1e591cc56a49f3b6873160d9f_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4feec4a1e591cc56a49f3b6873160d9f_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4feec4a1e591cc56a49f3b6873160d9f_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp

Files

memory/3068-1-0x0000000000400000-0x0000000000423000-memory.dmp

memory/3068-0-0x0000000000400000-0x0000000000423000-memory.dmp