Malware Analysis Report

2025-06-16 05:39

Sample ID 250523-zxzk5aap6s
Target JaffaCakes118_084d04217506de054daf7cbf7b5fad15
SHA256 93269cc7d4ac0a5565ba84a9ec79e9539712a8a87552c6d4627a967133f324d5
Tags
mofksys discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V16

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

93269cc7d4ac0a5565ba84a9ec79e9539712a8a87552c6d4627a967133f324d5

Threat Level: Known bad

The file JaffaCakes118_084d04217506de054daf7cbf7b5fad15 was found to be: Known bad.

Malicious Activity Summary

mofksys discovery

Detects Mofksys worm

Mofksys family

Drops file in System32 directory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of SetWindowsHookEx

Modifies registry class

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-05-23 21:06

Signatures

Detects Mofksys worm

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

Mofksys family

mofksys

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-05-23 21:06

Reported

2025-05-23 21:09

Platform

win10v2004-20250502-en

Max time kernel

104s

Max time network

137s

Command Line

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_084d04217506de054daf7cbf7b5fad15.exe"

Signatures

Drops file in System32 directory

Description Indicator Process Target
File opened for modification \??\c:\windows\SysWOW64\explorer.exe C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_084d04217506de054daf7cbf7b5fad15.exe N/A

Enumerates physical storage devices

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\JaffaCakes118_084d04217506de054daf7cbf7b5fad15.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language \??\c:\windows\SysWOW64\explorer.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3920234085-916416549-2700794571-1000_Classes\Local Settings \??\c:\windows\SysWOW64\explorer.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_084d04217506de054daf7cbf7b5fad15.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_084d04217506de054daf7cbf7b5fad15.exe N/A
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Processes

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_084d04217506de054daf7cbf7b5fad15.exe

"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_084d04217506de054daf7cbf7b5fad15.exe"

\??\c:\windows\SysWOW64\explorer.exe

c:\windows\system32\explorer.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 150.171.28.10:443 g.bing.com tcp
GB 95.100.153.131:443 www.bing.com tcp
GB 95.100.153.131:443 www.bing.com tcp
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 c.pki.goog udp
FR 216.58.213.67:80 c.pki.goog tcp

Files

N/A