Malware Analysis Report

2025-08-11 07:35

Sample ID 241015-2kxbca1bre
Target 4a54e45dc195233401ec57f77e5696f6_JaffaCakes118
SHA256 b0d846525a7799b4a33e1675c65b5aad7170a4ea59f6007f07f2987a3f8fe4be
Tags
bootkit discovery evasion persistence trojan
score
8/10

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
8/10

SHA256

b0d846525a7799b4a33e1675c65b5aad7170a4ea59f6007f07f2987a3f8fe4be

Threat Level: Likely malicious

The file 4a54e45dc195233401ec57f77e5696f6_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

bootkit discovery evasion persistence trojan

Drops file in Drivers directory

Identifies Wine through registry keys

Writes to the Master Boot Record (MBR)

Checks whether UAC is enabled

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

System Location Discovery: System Language Discovery

Modifies Internet Explorer settings

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-15 22:39

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-15 22:39

Reported

2024-10-15 22:41

Platform

win7-20241010-en

Max time kernel

141s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe"

Signatures

Drops file in Drivers directory

Description Indicator Process Target
File created C:\Windows\system32\drivers\etc\hosts C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe N/A
File opened for modification C:\Windows\system32\drivers\etc\hosts C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_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\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Internet Explorer\Main C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.perugamers.info udp

Files

memory/564-0-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-1-0x0000000000401000-0x000000000044B000-memory.dmp

memory/564-2-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-3-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-4-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-5-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-6-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-7-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-9-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-28-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-29-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-30-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-31-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-32-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-33-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-34-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-35-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-36-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-37-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-38-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-39-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-40-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-41-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-42-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-43-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-44-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-45-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-46-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-47-0x0000000000400000-0x0000000000778000-memory.dmp

memory/564-48-0x0000000000400000-0x0000000000778000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-15 22:39

Reported

2024-10-15 22:41

Platform

win10v2004-20241007-en

Max time kernel

141s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe"

Signatures

Drops file in Drivers directory

Description Indicator Process Target
File opened for modification C:\Windows\system32\drivers\etc\hosts C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe N/A
File created C:\Windows\system32\drivers\etc\hosts C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_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\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4a54e45dc195233401ec57f77e5696f6_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.perugamers.info udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp

Files

memory/2584-0-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-1-0x0000000000401000-0x000000000044B000-memory.dmp

memory/2584-2-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-3-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-4-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-5-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-6-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-8-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-9-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-10-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-22-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-23-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-24-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-25-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-26-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-27-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-28-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-29-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-30-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-31-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-32-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-33-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-34-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-35-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-36-0x0000000000400000-0x0000000000778000-memory.dmp

memory/2584-37-0x0000000000400000-0x0000000000778000-memory.dmp