Malware Analysis Report

2025-08-05 10:49

Sample ID 241017-a1pgwssdqe
Target 4feb1c5f9d6442fafd6c28f30a1b91b5_JaffaCakes118
SHA256 bcc685522dd80e37cb4047415bb4368d81ccad32270137d348b2ee196c562e59
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

bcc685522dd80e37cb4047415bb4368d81ccad32270137d348b2ee196c562e59

Threat Level: Shows suspicious behavior

The file 4feb1c5f9d6442fafd6c28f30a1b91b5_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

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-17 00:40

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-17 00:40

Reported

2024-10-17 00:43

Platform

win7-20240708-en

Max time kernel

118s

Max time network

119s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4feb1c5f9d6442fafd6c28f30a1b91b5_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

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 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 1488 wrote to memory of 2348 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1488 wrote to memory of 2348 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1488 wrote to memory of 2348 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1488 wrote to memory of 2348 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1488 wrote to memory of 2348 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1488 wrote to memory of 2348 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1488 wrote to memory of 2348 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\4feb1c5f9d6442fafd6c28f30a1b91b5_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4feb1c5f9d6442fafd6c28f30a1b91b5_JaffaCakes118.dll,#1

Network

N/A

Files

memory/2348-0-0x0000000000100000-0x000000000010C000-memory.dmp

memory/2348-4-0x0000000010000000-0x000000001000B000-memory.dmp

memory/2348-2-0x0000000010000000-0x000000001000B000-memory.dmp

memory/2348-1-0x0000000000100000-0x000000000010C000-memory.dmp

memory/2348-7-0x0000000010000000-0x000000001000B000-memory.dmp

memory/2348-6-0x0000000000100000-0x000000000010C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-17 00:40

Reported

2024-10-17 00:43

Platform

win10v2004-20241007-en

Max time kernel

140s

Max time network

150s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4feb1c5f9d6442fafd6c28f30a1b91b5_JaffaCakes118.dll,#1

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4880 wrote to memory of 948 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4880 wrote to memory of 948 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4880 wrote to memory of 948 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\4feb1c5f9d6442fafd6c28f30a1b91b5_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4feb1c5f9d6442fafd6c28f30a1b91b5_JaffaCakes118.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa 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 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp

Files

memory/948-1-0x0000000010000000-0x000000001000B000-memory.dmp

memory/948-0-0x0000000002410000-0x000000000241C000-memory.dmp

memory/948-4-0x0000000010000000-0x000000001000B000-memory.dmp