Malware Analysis Report

2025-08-11 07:35

Sample ID 241015-3n2wnsxcjr
Target 4a8457292401a0a806f41c9aead79031_JaffaCakes118
SHA256 9baf53ab9ad23bf1d6271bbe83f83aa07942917aa222069dde67eba17ef7769a
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

9baf53ab9ad23bf1d6271bbe83f83aa07942917aa222069dde67eba17ef7769a

Threat Level: Shows suspicious behavior

The file 4a8457292401a0a806f41c9aead79031_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

Modifies registry class

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-15 23:40

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-15 23:40

Reported

2024-10-15 23:43

Platform

win7-20241010-en

Max time kernel

15s

Max time network

19s

Command Line

C:\Windows\Explorer.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\4a8457292401a0a806f41c9aead79031_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\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.key C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2496 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2496 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2496 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2496 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2496 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2496 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2496 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2496 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2496 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2496 wrote to memory of 2244 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2244 wrote to memory of 1264 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Windows\Explorer.EXE
PID 2244 wrote to memory of 1264 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Windows\Explorer.EXE
PID 2244 wrote to memory of 1264 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Windows\Explorer.EXE
PID 2244 wrote to memory of 1264 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Windows\Explorer.EXE

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe

Network

N/A

Files

memory/2496-0-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2496-3-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2496-2-0x0000000000401000-0x0000000000407000-memory.dmp

memory/2496-1-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2496-4-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2496-6-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2496-9-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2496-8-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2496-10-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2496-11-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2244-22-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2244-24-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2244-21-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2496-27-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2244-18-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2244-16-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2244-14-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2496-13-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2496-12-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2244-30-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2244-31-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2496-29-0x0000000000401000-0x0000000000407000-memory.dmp

memory/2496-28-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2244-25-0x0000000000400000-0x0000000000412000-memory.dmp

memory/1264-32-0x000000007FFF0000-0x000000007FFF7000-memory.dmp

memory/1264-35-0x000000007EFD0000-0x000000007EFD1000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-15 23:40

Reported

2024-10-15 23:43

Platform

win10v2004-20241007-en

Max time kernel

136s

Max time network

124s

Command Line

C:\Windows\Explorer.EXE

Signatures

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\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile" C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.key C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2168 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2168 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2168 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2168 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2168 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2168 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2168 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2168 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 2168 wrote to memory of 4756 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe
PID 4756 wrote to memory of 3460 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Windows\Explorer.EXE
PID 4756 wrote to memory of 3460 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Windows\Explorer.EXE
PID 4756 wrote to memory of 3460 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Windows\Explorer.EXE
PID 4756 wrote to memory of 3460 N/A C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe C:\Windows\Explorer.EXE

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe

C:\Users\Admin\AppData\Local\Temp\4a8457292401a0a806f41c9aead79031_JaffaCakes118.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 200.163.202.172.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.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/2168-0-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2168-3-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2168-2-0x0000000000401000-0x0000000000407000-memory.dmp

memory/2168-1-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2168-4-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2168-6-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2168-8-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4756-9-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2168-12-0x0000000000400000-0x000000000047F000-memory.dmp

memory/2168-11-0x0000000000400000-0x000000000047F000-memory.dmp

memory/4756-10-0x0000000000400000-0x0000000000412000-memory.dmp

memory/2168-14-0x0000000000401000-0x0000000000407000-memory.dmp

memory/4756-15-0x0000000000400000-0x0000000000412000-memory.dmp

memory/3460-16-0x000000007FFF0000-0x000000007FFF7000-memory.dmp

memory/3460-17-0x000000007FFD0000-0x000000007FFD1000-memory.dmp