Malware Analysis Report

2025-01-18 22:02

Sample ID 240622-l4mcgstane
Target 018e13277c8a66550d95f0ae41078c84_JaffaCakes118
SHA256 7416bd1821a89a78803e736863a8d5fce97859a343ebec63c5a97ddf405efcab
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

7416bd1821a89a78803e736863a8d5fce97859a343ebec63c5a97ddf405efcab

Threat Level: Shows suspicious behavior

The file 018e13277c8a66550d95f0ae41078c84_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

2024-06-22 10:05

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-22 10:05

Reported

2024-06-22 10:07

Platform

win7-20240508-en

Max time kernel

117s

Max time network

118s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\018e13277c8a66550d95f0ae41078c84_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\{FCADDC14-BD46-408A-9842-CDBE1C6D37EB} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{FCADDC14-BD46-408A-9842-CDBE1C6D37EB}\ C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{FCADDC14-BD46-408A-9842-CDBE1C6D37EB}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{FCADDC14-BD46-408A-9842-CDBE1C6D37EB}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\018e13277c8a66550d95f0ae41078c84_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{FCADDC14-BD46-408A-9842-CDBE1C6D37EB}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{FCADDC14-BD46-408A-9842-CDBE1C6D37EB} C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2420 wrote to memory of 2436 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2420 wrote to memory of 2436 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2420 wrote to memory of 2436 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2420 wrote to memory of 2436 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2420 wrote to memory of 2436 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2420 wrote to memory of 2436 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2420 wrote to memory of 2436 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\018e13277c8a66550d95f0ae41078c84_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\018e13277c8a66550d95f0ae41078c84_JaffaCakes118.dll

Network

N/A

Files

memory/2436-1-0x00000000024DF000-0x00000000024E2000-memory.dmp

memory/2436-0-0x00000000023D0000-0x00000000024E3000-memory.dmp

memory/2436-2-0x00000000023D0000-0x00000000024E3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-22 10:05

Reported

2024-06-22 10:07

Platform

win10v2004-20240611-en

Max time kernel

150s

Max time network

150s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\018e13277c8a66550d95f0ae41078c84_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\{FCADDC14-BD46-408A-9842-CDBE1C6D37EB} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FCADDC14-BD46-408A-9842-CDBE1C6D37EB}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\018e13277c8a66550d95f0ae41078c84_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FCADDC14-BD46-408A-9842-CDBE1C6D37EB}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FCADDC14-BD46-408A-9842-CDBE1C6D37EB} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FCADDC14-BD46-408A-9842-CDBE1C6D37EB}\ C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{FCADDC14-BD46-408A-9842-CDBE1C6D37EB}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1916 wrote to memory of 2040 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1916 wrote to memory of 2040 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1916 wrote to memory of 2040 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\018e13277c8a66550d95f0ae41078c84_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\018e13277c8a66550d95f0ae41078c84_JaffaCakes118.dll

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 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
BE 88.221.83.200:443 www.bing.com tcp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 200.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.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 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/2040-0-0x0000000002080000-0x0000000002193000-memory.dmp

memory/2040-5-0x0000000000710000-0x0000000000711000-memory.dmp

memory/2040-4-0x0000000000590000-0x0000000000591000-memory.dmp

memory/2040-3-0x0000000000570000-0x0000000000573000-memory.dmp

memory/2040-2-0x000000000218F000-0x0000000002192000-memory.dmp

memory/2040-1-0x0000000002080000-0x0000000002193000-memory.dmp