Malware Analysis Report

2025-01-18 21:44

Sample ID 240415-nchw4afd2t
Target f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118
SHA256 5e85ed7c59ca80dbf18013e1c81e2963266c83c5e55502a0c7c49c6d17547ac0
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

5e85ed7c59ca80dbf18013e1c81e2963266c83c5e55502a0c7c49c6d17547ac0

Threat Level: Shows suspicious behavior

The file f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

adware stealer

Installs/modifies Browser Helper Object

Unsigned PE

Suspicious use of WriteProcessMemory

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-15 11:15

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-15 11:15

Reported

2024-04-15 11:17

Platform

win7-20240221-en

Max time kernel

122s

Max time network

125s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f0eced1b189070a8c2cd6de3a64f6173_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-1986-A27D-BEC3-F822A3856C83} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-1986-A27D-BEC3-F822A3856C83}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118.axc\ = "axc" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-1986-A27D-BEC3-F822A3856C83}\ProgID C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-1986-A27D-BEC3-F822A3856C83}\ = "axc" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-1986-A27D-BEC3-F822A3856C83}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-1986-A27D-BEC3-F822A3856C83}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118.axc C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118.axc\Clsid C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118.axc\Clsid\ = "{CC01FC6C-1986-A27D-BEC3-F822A3856C83}" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-1986-A27D-BEC3-F822A3856C83}\ProgID\ = "f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118.axc" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-1986-A27D-BEC3-F822A3856C83} C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1688 wrote to memory of 2820 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1688 wrote to memory of 2820 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1688 wrote to memory of 2820 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1688 wrote to memory of 2820 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1688 wrote to memory of 2820 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1688 wrote to memory of 2820 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1688 wrote to memory of 2820 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\f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118.dll

Network

N/A

Files

memory/2820-0-0x0000000000A30000-0x0000000000AD4000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-15 11:15

Reported

2024-04-15 11:17

Platform

win10v2004-20240412-en

Max time kernel

135s

Max time network

137s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f0eced1b189070a8c2cd6de3a64f6173_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-1986-A27D-BEC3-F822A3856C83} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-1986-A27D-BEC3-F822A3856C83} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-1986-A27D-BEC3-F822A3856C83}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118.axc\Clsid C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-1986-A27D-BEC3-F822A3856C83}\ProgID C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-1986-A27D-BEC3-F822A3856C83}\ProgID\ = "f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118.axc" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-1986-A27D-BEC3-F822A3856C83}\ = "axc" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-1986-A27D-BEC3-F822A3856C83}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-1986-A27D-BEC3-F822A3856C83}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118.axc C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118.axc\ = "axc" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118.axc\Clsid\ = "{CC01FC6C-1986-A27D-BEC3-F822A3856C83}" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4016 wrote to memory of 5004 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 4016 wrote to memory of 5004 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 4016 wrote to memory of 5004 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\f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\f0eced1b189070a8c2cd6de3a64f6173_JaffaCakes118.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.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 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 50.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 241.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 233.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 95.16.208.104.in-addr.arpa udp

Files

memory/5004-0-0x00000000007D0000-0x0000000000874000-memory.dmp