Malware Analysis Report

2025-08-06 01:37

Sample ID 241016-279vyssbkn
Target 4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118
SHA256 de6e459bcb96ae5f363d05d9a0dde6c73b1a41d11fd60a4a7a26ce58475bce5f
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

de6e459bcb96ae5f363d05d9a0dde6c73b1a41d11fd60a4a7a26ce58475bce5f

Threat Level: Shows suspicious behavior

The file 4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

bootkit discovery persistence

Writes to the Master Boot Record (MBR)

Suspicious use of SetThreadContext

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Modifies Control Panel

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-16 23:14

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-16 23:14

Reported

2024-10-16 23:17

Platform

win7-20240903-en

Max time kernel

141s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_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\4f8bd983e34ffb5e76576d18cbd6e9e0_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\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A

Modifies Control Panel

evasion
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Control Panel\International\Locale = "00000409" C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Control Panel\International\Locales = "00000409" C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2584 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe
PID 2584 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe
PID 2584 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe
PID 2584 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe
PID 2584 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe
PID 2584 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe
PID 2584 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe
PID 2584 wrote to memory of 2884 N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe

Network

N/A

Files

memory/2884-65-0x0000000000400000-0x0000000000436000-memory.dmp

memory/2884-69-0x0000000000400000-0x0000000000436000-memory.dmp

memory/2884-73-0x0000000000400000-0x0000000000436000-memory.dmp

memory/2884-80-0x0000000000400000-0x0000000000436000-memory.dmp

memory/2884-84-0x0000000000400000-0x0000000000436000-memory.dmp

memory/2884-86-0x0000000000400000-0x0000000000436000-memory.dmp

memory/2884-89-0x0000000000400000-0x0000000000436000-memory.dmp

memory/2884-88-0x0000000000400000-0x0000000000436000-memory.dmp

memory/2884-85-0x0000000000400000-0x0000000000436000-memory.dmp

memory/2884-335-0x0000000000240000-0x000000000026D000-memory.dmp

memory/2884-336-0x0000000000240000-0x000000000026D000-memory.dmp

memory/2884-341-0x0000000000240000-0x000000000028D000-memory.dmp

memory/2884-342-0x0000000000240000-0x000000000028D000-memory.dmp

memory/2884-346-0x0000000000240000-0x0000000000264000-memory.dmp

memory/2884-353-0x00000000029C0000-0x0000000002A66000-memory.dmp

memory/2884-352-0x0000000000400000-0x0000000000436000-memory.dmp

memory/2884-354-0x00000000029C0000-0x0000000002A66000-memory.dmp

memory/2884-359-0x0000000000240000-0x000000000024B000-memory.dmp

memory/2884-360-0x0000000000240000-0x000000000024B000-memory.dmp

memory/2884-367-0x0000000000240000-0x000000000026D000-memory.dmp

memory/2884-372-0x0000000000240000-0x0000000000252000-memory.dmp

memory/2884-370-0x0000000000240000-0x000000000028D000-memory.dmp

memory/2884-369-0x0000000000240000-0x0000000000271000-memory.dmp

memory/2884-368-0x0000000000240000-0x0000000000271000-memory.dmp

memory/2884-375-0x0000000000240000-0x0000000000252000-memory.dmp

memory/2884-374-0x0000000000240000-0x000000000028D000-memory.dmp

memory/2884-380-0x0000000000240000-0x0000000000264000-memory.dmp

memory/2884-382-0x0000000002710000-0x000000000277B000-memory.dmp

memory/2884-381-0x0000000002710000-0x000000000277B000-memory.dmp

memory/2884-387-0x00000000029C0000-0x0000000002A59000-memory.dmp

memory/2884-388-0x00000000029C0000-0x0000000002A66000-memory.dmp

memory/2884-389-0x00000000029C0000-0x0000000002A59000-memory.dmp

memory/2884-394-0x0000000000240000-0x000000000024B000-memory.dmp

memory/2884-395-0x0000000000240000-0x000000000024B000-memory.dmp

memory/2884-396-0x0000000000240000-0x000000000024B000-memory.dmp

memory/2884-402-0x0000000000240000-0x0000000000271000-memory.dmp

memory/2884-403-0x0000000000240000-0x0000000000271000-memory.dmp

memory/2884-404-0x00000000029C0000-0x0000000002A31000-memory.dmp

memory/2884-405-0x00000000029C0000-0x0000000002A31000-memory.dmp

memory/2884-410-0x0000000000240000-0x0000000000248000-memory.dmp

memory/2884-411-0x0000000000240000-0x0000000000252000-memory.dmp

memory/2884-412-0x0000000002710000-0x000000000277B000-memory.dmp

memory/2884-413-0x0000000002710000-0x000000000277B000-memory.dmp

memory/2884-414-0x00000000029C0000-0x0000000002A59000-memory.dmp

memory/2884-415-0x00000000029C0000-0x0000000002A59000-memory.dmp

memory/2884-417-0x0000000000240000-0x000000000024B000-memory.dmp

memory/2884-416-0x0000000000240000-0x000000000024B000-memory.dmp

memory/2884-419-0x00000000029C0000-0x0000000002A31000-memory.dmp

memory/2884-418-0x00000000029C0000-0x0000000002A31000-memory.dmp

memory/2884-421-0x0000000000240000-0x0000000000248000-memory.dmp

memory/2884-420-0x0000000000400000-0x0000000000436000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-16 23:14

Reported

2024-10-16 23:17

Platform

win10v2004-20241007-en

Max time kernel

140s

Max time network

145s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_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\4f8bd983e34ffb5e76576d18cbd6e9e0_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\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A

Modifies Control Panel

evasion
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Locale = "00000409" C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Locales = "00000409" C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3804 wrote to memory of 4340 N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe
PID 3804 wrote to memory of 4340 N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe
PID 3804 wrote to memory of 4340 N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe
PID 3804 wrote to memory of 4340 N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe
PID 3804 wrote to memory of 4340 N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe
PID 3804 wrote to memory of 4340 N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe
PID 3804 wrote to memory of 4340 N/A C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\4f8bd983e34ffb5e76576d18cbd6e9e0_JaffaCakes118.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 5.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.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
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp

Files

memory/4340-187-0x0000000000400000-0x0000000000436000-memory.dmp

memory/4340-190-0x0000000000400000-0x0000000000436000-memory.dmp

memory/4340-194-0x0000000000400000-0x0000000000436000-memory.dmp

memory/4340-193-0x0000000000400000-0x0000000000436000-memory.dmp

memory/4340-191-0x0000000000400000-0x0000000000436000-memory.dmp

memory/4340-507-0x0000000000400000-0x0000000000436000-memory.dmp