Malware Analysis Report

2025-01-03 09:25

Sample ID 240620-nx65eswapd
Target 05b39b71b09620e172ad8ed441349a7b_JaffaCakes118
SHA256 88eb34479681acb3a962280bb5ea34deb12a9f6d22f174784de29576416ba1fe
Tags
bootkit 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

88eb34479681acb3a962280bb5ea34deb12a9f6d22f174784de29576416ba1fe

Threat Level: Shows suspicious behavior

The file 05b39b71b09620e172ad8ed441349a7b_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

bootkit persistence

Adds Run key to start application

Writes to the Master Boot Record (MBR)

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-20 11:47

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-20 11:47

Reported

2024-06-20 11:50

Platform

win7-20240611-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe"

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1340930862-1405011213-2821322012-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Explorer = "C:\\Users\\Admin\\AppData\\Roaming\\explorer.exe" C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Explorer = "C:\\Users\\Admin\\AppData\\Roaming\\explorer.exe" C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_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\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1208 wrote to memory of 2856 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 1208 wrote to memory of 2856 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 1208 wrote to memory of 2856 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 1208 wrote to memory of 2856 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 1208 wrote to memory of 2856 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 1208 wrote to memory of 2856 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 1208 wrote to memory of 2856 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 1208 wrote to memory of 2856 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 1208 wrote to memory of 2856 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 2856 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 2856 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 2856 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 2856 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 2856 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 2856 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 2856 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 2856 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 2856 wrote to memory of 3052 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.caracasfitness.com udp
US 15.197.148.33:80 www.caracasfitness.com tcp

Files

memory/1208-0-0x0000000000400000-0x0000000000463000-memory.dmp

memory/1208-16-0x0000000000400000-0x0000000000463000-memory.dmp

memory/2856-15-0x0000000000400000-0x000000000040F000-memory.dmp

memory/2856-13-0x0000000000400000-0x000000000040F000-memory.dmp

memory/2856-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2856-7-0x0000000000400000-0x000000000040F000-memory.dmp

memory/2856-5-0x0000000000400000-0x000000000040F000-memory.dmp

memory/2856-3-0x0000000000400000-0x000000000040F000-memory.dmp

memory/3052-19-0x0000000000400000-0x0000000000404000-memory.dmp

memory/3052-26-0x0000000000400000-0x0000000000404000-memory.dmp

memory/3052-23-0x0000000000400000-0x0000000000404000-memory.dmp

memory/3052-21-0x0000000000400000-0x0000000000404000-memory.dmp

memory/2856-30-0x0000000000230000-0x0000000000293000-memory.dmp

memory/3052-29-0x0000000000400000-0x0000000000404000-memory.dmp

memory/2856-31-0x0000000000400000-0x000000000040F000-memory.dmp

memory/3052-34-0x0000000000400000-0x0000000000404000-memory.dmp

memory/3052-35-0x0000000000400000-0x0000000000404000-memory.dmp

C:\Users\Admin\AppData\Roaming\svchost64.exe

MD5 e89f75f918dbdcee28604d4e09dd71d7
SHA1 f9d9055e9878723a12063b47d4a1a5f58c3eb1e9
SHA256 6dc9c7fc93bb488bb0520a6c780a8d3c0fb5486a4711aca49b4c53fac7393023
SHA512 8df0ab2e3679b64a6174deff4259ae5680f88e3ae307e0ea2dfff88ec4ba14f3477c9fe3a5aa5da3a8e857601170a5108ed75f6d6975958ac7a314e4a336aed0

memory/3052-44-0x0000000000400000-0x0000000000404000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-20 11:47

Reported

2024-06-20 11:50

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe"

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Explorer = "C:\\Users\\Admin\\AppData\\Roaming\\explorer.exe" C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Explorer = "C:\\Users\\Admin\\AppData\\Roaming\\explorer.exe" C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_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\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3552 wrote to memory of 1520 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 3552 wrote to memory of 1520 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 3552 wrote to memory of 1520 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 3552 wrote to memory of 1520 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 3552 wrote to memory of 1520 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 3552 wrote to memory of 1520 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 3552 wrote to memory of 1520 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 3552 wrote to memory of 1520 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 1520 wrote to memory of 4056 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 1520 wrote to memory of 4056 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 1520 wrote to memory of 4056 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 1520 wrote to memory of 4056 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 1520 wrote to memory of 4056 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 1520 wrote to memory of 4056 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 1520 wrote to memory of 4056 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe
PID 1520 wrote to memory of 4056 N/A C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe

Processes

C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\05b39b71b09620e172ad8ed441349a7b_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.caracasfitness.com udp

Files

memory/3552-0-0x0000000000400000-0x0000000000463000-memory.dmp

memory/1520-3-0x0000000000400000-0x000000000040F000-memory.dmp

memory/3552-6-0x0000000000400000-0x0000000000463000-memory.dmp

memory/1520-5-0x0000000000400000-0x000000000040F000-memory.dmp

memory/4056-9-0x0000000000400000-0x0000000000404000-memory.dmp

memory/1520-12-0x0000000000400000-0x000000000040F000-memory.dmp

memory/4056-14-0x0000000000400000-0x0000000000404000-memory.dmp

memory/4056-15-0x0000000000400000-0x0000000000404000-memory.dmp

memory/4056-18-0x0000000000400000-0x0000000000404000-memory.dmp