Malware Analysis Report

2025-01-18 22:01

Sample ID 240622-l3g2datakb
Target 018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118
SHA256 d103c5d7256a98b1738eeaea94396a610e9cfeed67c6cecf1b4bdacacb7bcb43
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

d103c5d7256a98b1738eeaea94396a610e9cfeed67c6cecf1b4bdacacb7bcb43

Threat Level: Shows suspicious behavior

The file 018c209d2dde5a76c1fb8ea3bd1c9c99_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 10:03

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-22 10:03

Reported

2024-06-22 10:05

Platform

win7-20240508-en

Max time kernel

119s

Max time network

121s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\018c209d2dde5a76c1fb8ea3bd1c9c99_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-489D-4767-3D12-4A26F7E57F87} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-489D-4767-3D12-4A26F7E57F87} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-489D-4767-3D12-4A26F7E57F87}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-489D-4767-3D12-4A26F7E57F87}\ProgID\ = "018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118.brm inc" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118.brm inc\Clsid C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118.brm inc\Clsid\ = "{CC01FC6C-489D-4767-3D12-4A26F7E57F87}" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-489D-4767-3D12-4A26F7E57F87}\ProgID C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-489D-4767-3D12-4A26F7E57F87}\ = "brm inc" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-489D-4767-3D12-4A26F7E57F87}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-489D-4767-3D12-4A26F7E57F87}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118.brm inc C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118.brm inc\ = "brm inc" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1232 wrote to memory of 2116 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1232 wrote to memory of 2116 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1232 wrote to memory of 2116 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1232 wrote to memory of 2116 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1232 wrote to memory of 2116 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1232 wrote to memory of 2116 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1232 wrote to memory of 2116 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\018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118.dll

Network

N/A

Files

memory/2116-0-0x0000000000260000-0x0000000000304000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-22 10:03

Reported

2024-06-22 10:05

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

51s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\018c209d2dde5a76c1fb8ea3bd1c9c99_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-489D-4767-3D12-4A26F7E57F87} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-489D-4767-3D12-4A26F7E57F87} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-489D-4767-3D12-4A26F7E57F87}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-489D-4767-3D12-4A26F7E57F87}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118.brm inc\ = "brm inc" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118.brm inc\Clsid C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-489D-4767-3D12-4A26F7E57F87}\ProgID C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-489D-4767-3D12-4A26F7E57F87}\ = "brm inc" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-489D-4767-3D12-4A26F7E57F87}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118.brm inc C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118.brm inc\Clsid\ = "{CC01FC6C-489D-4767-3D12-4A26F7E57F87}" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-489D-4767-3D12-4A26F7E57F87}\ProgID\ = "018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118.brm inc" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1532 wrote to memory of 1036 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1532 wrote to memory of 1036 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1532 wrote to memory of 1036 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\018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\018c209d2dde5a76c1fb8ea3bd1c9c99_JaffaCakes118.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp

Files

N/A