Malware Analysis Report

2025-08-06 01:38

Sample ID 241016-1tjaeavera
Target 4f3d539be754a116faace0c94e1b2eb0_JaffaCakes118
SHA256 b1fd02b93964f24bba4ede2535306aad32e7dd52273f74e049e2e94670aa9057
Tags
bootkit persistence discovery
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

b1fd02b93964f24bba4ede2535306aad32e7dd52273f74e049e2e94670aa9057

Threat Level: Shows suspicious behavior

The file 4f3d539be754a116faace0c94e1b2eb0_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

bootkit persistence discovery

Writes to the Master Boot Record (MBR)

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: RenamesItself

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-16 21:56

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-16 21:56

Reported

2024-10-16 21:58

Platform

win7-20240903-en

Max time kernel

0s

Max time network

0s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4f3d539be754a116faace0c94e1b2eb0_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\4f3d539be754a116faace0c94e1b2eb0_JaffaCakes118.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f3d539be754a116faace0c94e1b2eb0_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4f3d539be754a116faace0c94e1b2eb0_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4f3d539be754a116faace0c94e1b2eb0_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4f3d539be754a116faace0c94e1b2eb0_JaffaCakes118.exe"

Network

N/A

Files

memory/2440-1-0x0000000000401000-0x0000000000405000-memory.dmp

memory/2440-3-0x0000000000400000-0x000000000042C000-memory.dmp

memory/2440-2-0x0000000000400000-0x000000000042C000-memory.dmp

memory/2440-0-0x00000000004A0000-0x00000000004C3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-16 21:56

Reported

2024-10-16 21:56

Platform

win10v2004-20241007-en

Max time kernel

1s

Max time network

3s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4f3d539be754a116faace0c94e1b2eb0_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\4f3d539be754a116faace0c94e1b2eb0_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\4f3d539be754a116faace0c94e1b2eb0_JaffaCakes118.exe N/A

Suspicious behavior: RenamesItself

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f3d539be754a116faace0c94e1b2eb0_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4f3d539be754a116faace0c94e1b2eb0_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4f3d539be754a116faace0c94e1b2eb0_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4f3d539be754a116faace0c94e1b2eb0_JaffaCakes118.exe"

Network

Files

memory/2176-0-0x0000000000401000-0x0000000000405000-memory.dmp

memory/2176-1-0x00000000008F0000-0x0000000000913000-memory.dmp

memory/2176-2-0x0000000000400000-0x000000000042C000-memory.dmp

memory/2176-3-0x0000000000400000-0x000000000042C000-memory.dmp