Malware Analysis Report

2025-01-03 09:16

Sample ID 240620-pr9tss1hpl
Target 06070312b49e35c4db50f05367f1c138_JaffaCakes118
SHA256 50455747dfad8f457b0434e5a44496338a77c0377f36341f94efd1e7eb75bbce
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

50455747dfad8f457b0434e5a44496338a77c0377f36341f94efd1e7eb75bbce

Threat Level: Shows suspicious behavior

The file 06070312b49e35c4db50f05367f1c138_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

bootkit discovery persistence

Checks installed software on the system

Writes to the Master Boot Record (MBR)

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-20 12:34

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-20 12:34

Reported

2024-06-20 12:37

Platform

win7-20240220-en

Max time kernel

120s

Max time network

121s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\06070312b49e35c4db50f05367f1c138_JaffaCakes118.dll,#1

Signatures

Checks installed software on the system

discovery

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2908 wrote to memory of 2276 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2908 wrote to memory of 2276 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2908 wrote to memory of 2276 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2908 wrote to memory of 2276 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2908 wrote to memory of 2276 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2908 wrote to memory of 2276 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2908 wrote to memory of 2276 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\06070312b49e35c4db50f05367f1c138_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\06070312b49e35c4db50f05367f1c138_JaffaCakes118.dll,#1

Network

N/A

Files

memory/2276-1-0x0000000010000000-0x0000000010009000-memory.dmp

memory/2276-0-0x00000000000C0000-0x00000000000CA000-memory.dmp

memory/2276-5-0x00000000000C0000-0x00000000000CA000-memory.dmp

memory/2276-6-0x00000000000C0000-0x00000000000CA000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-20 12:34

Reported

2024-06-20 12:37

Platform

win10v2004-20240611-en

Max time kernel

150s

Max time network

151s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\06070312b49e35c4db50f05367f1c138_JaffaCakes118.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2612 wrote to memory of 3032 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2612 wrote to memory of 3032 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2612 wrote to memory of 3032 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\06070312b49e35c4db50f05367f1c138_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\06070312b49e35c4db50f05367f1c138_JaffaCakes118.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 13.107.21.237:443 g.bing.com tcp
NL 23.62.61.129:443 www.bing.com tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 129.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.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 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/3032-0-0x00000000005F0000-0x00000000005FA000-memory.dmp

memory/3032-2-0x0000000010000000-0x0000000010009000-memory.dmp

memory/3032-4-0x00000000005F0000-0x00000000005FA000-memory.dmp

memory/3032-8-0x00000000005F0000-0x00000000005FA000-memory.dmp