Malware Analysis Report

2025-01-18 21:45

Sample ID 240414-x5765aed3w
Target ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118
SHA256 c866918d94e9a391c0ae55fadcf7a899379775ce8655eb914d8a21dc8cae14f0
Tags
adware stealer
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

c866918d94e9a391c0ae55fadcf7a899379775ce8655eb914d8a21dc8cae14f0

Threat Level: Shows suspicious behavior

The file ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

adware stealer

Installs/modifies Browser Helper Object

Unsigned PE

Modifies registry class

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-14 19:27

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-14 19:27

Reported

2024-04-14 19:29

Platform

win7-20240215-en

Max time kernel

117s

Max time network

118s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.dll

Signatures

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28}\ = "iwc" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.iwc\ = "iwc" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28}\ProgID\ = "ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.iwc" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.iwc C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.iwc\Clsid C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.iwc\Clsid\ = "{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28}" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28}\ProgID C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2156 wrote to memory of 2708 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2156 wrote to memory of 2708 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2156 wrote to memory of 2708 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2156 wrote to memory of 2708 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2156 wrote to memory of 2708 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2156 wrote to memory of 2708 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2156 wrote to memory of 2708 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.dll

Network

N/A

Files

memory/2708-0-0x0000000000D10000-0x0000000000DAD000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-14 19:27

Reported

2024-04-14 19:29

Platform

win10v2004-20240412-en

Max time kernel

146s

Max time network

154s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.dll

Signatures

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28}\ = "iwc" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.iwc C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28}\ProgID C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28}\ProgID\ = "ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.iwc" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.iwc\ = "iwc" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.iwc\Clsid C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.iwc\Clsid\ = "{CC01FC6C-B89C-3F96-9CD2-32D5C3858B28}" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 112 wrote to memory of 3516 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 112 wrote to memory of 3516 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 112 wrote to memory of 3516 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\ef53d9f5d8fefd8e079958e2befd27b2_JaffaCakes118.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 22.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 17.14.97.104.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 211.143.182.52.in-addr.arpa udp

Files

N/A