Malware Analysis Report

2025-01-03 09:11

Sample ID 240620-mfkdnasdpg
Target 051f421a83027a5458df6603508dacd8_JaffaCakes118
SHA256 dce6639b3b02995a2116bdad43a1c8c640760d312d67e2f72ee75d3f98984d3a
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

dce6639b3b02995a2116bdad43a1c8c640760d312d67e2f72ee75d3f98984d3a

Threat Level: Shows suspicious behavior

The file 051f421a83027a5458df6603508dacd8_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 10:24

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-20 10:24

Reported

2024-06-20 10:26

Platform

win7-20240508-en

Max time kernel

121s

Max time network

121s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\051f421a83027a5458df6603508dacd8_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 1904 wrote to memory of 2264 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1904 wrote to memory of 2264 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1904 wrote to memory of 2264 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1904 wrote to memory of 2264 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1904 wrote to memory of 2264 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1904 wrote to memory of 2264 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1904 wrote to memory of 2264 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\051f421a83027a5458df6603508dacd8_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\051f421a83027a5458df6603508dacd8_JaffaCakes118.dll,#1

Network

N/A

Files

memory/2264-0-0x0000000000170000-0x000000000017A000-memory.dmp

memory/2264-1-0x0000000010000000-0x0000000010009000-memory.dmp

memory/2264-4-0x0000000010000000-0x0000000010009000-memory.dmp

memory/2264-6-0x0000000000170000-0x000000000017A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-20 10:24

Reported

2024-06-20 10:27

Platform

win10v2004-20240226-en

Max time kernel

143s

Max time network

151s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\051f421a83027a5458df6603508dacd8_JaffaCakes118.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2948 wrote to memory of 3372 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2948 wrote to memory of 3372 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2948 wrote to memory of 3372 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\051f421a83027a5458df6603508dacd8_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\051f421a83027a5458df6603508dacd8_JaffaCakes118.dll,#1

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4088 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
GB 96.16.110.114:80 tcp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
GB 142.250.187.202:443 tcp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 164.189.21.2.in-addr.arpa udp
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 27.173.189.20.in-addr.arpa udp

Files

memory/3372-0-0x00000000013B0000-0x00000000013BA000-memory.dmp

memory/3372-2-0x0000000010000000-0x0000000010009000-memory.dmp