Malware Analysis Report

2024-10-19 10:47

Sample ID 240620-hcwv3atgnc
Target 03ae7ed86d453a6b6fb5362d396c0908_JaffaCakes118
SHA256 f2cdb57d828617a8bdf5d1f4a83e91d840084d9e5754f26aec183478cb3f1d70
Tags
adware persistence 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

f2cdb57d828617a8bdf5d1f4a83e91d840084d9e5754f26aec183478cb3f1d70

Threat Level: Shows suspicious behavior

The file 03ae7ed86d453a6b6fb5362d396c0908_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

adware persistence stealer

Adds Run key to start application

Installs/modifies Browser Helper Object

Unsigned PE

Modifies registry class

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-20 06:36

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-20 06:36

Reported

2024-06-20 06:38

Platform

win7-20240508-en

Max time kernel

117s

Max time network

117s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\03ae7ed86d453a6b6fb5362d396c0908_JaffaCakes118.dll

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\{fa2b00a4-2e7f-90cb-9557-0863e9688932} = "C:\\Windows\\System32\\Rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\03ae7ed86d453a6b6fb5362d396c0908_JaffaCakes118.dll\" DllStub" C:\Windows\SysWOW64\regsvr32.exe N/A

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{95bf22d3-9f4e-c2ff-2a63-95429edb3f29} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{95bf22d3-9f4e-c2ff-2a63-95429edb3f29}\NoExplorer = "\"\"" C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{95bf22d3-9f4e-c2ff-2a63-95429edb3f29}\ = "agadoo browser enhancer" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{95bf22d3-9f4e-c2ff-2a63-95429edb3f29}\InProcServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{95bf22d3-9f4e-c2ff-2a63-95429edb3f29}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\03ae7ed86d453a6b6fb5362d396c0908_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{95bf22d3-9f4e-c2ff-2a63-95429edb3f29}\InProcServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{95bf22d3-9f4e-c2ff-2a63-95429edb3f29} C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1708 wrote to memory of 1428 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1708 wrote to memory of 1428 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1708 wrote to memory of 1428 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1708 wrote to memory of 1428 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1708 wrote to memory of 1428 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1708 wrote to memory of 1428 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1708 wrote to memory of 1428 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\03ae7ed86d453a6b6fb5362d396c0908_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\03ae7ed86d453a6b6fb5362d396c0908_JaffaCakes118.dll

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-20 06:36

Reported

2024-06-20 06:38

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

149s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\03ae7ed86d453a6b6fb5362d396c0908_JaffaCakes118.dll

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\{ee4c2781-ba6c-f1f8-04a9-d0d80445913a} = "C:\\Windows\\System32\\Rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\03ae7ed86d453a6b6fb5362d396c0908_JaffaCakes118.dll\" DllStub" C:\Windows\SysWOW64\regsvr32.exe N/A

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{f4bdbc0f-8644-b1aa-6968-c175de33b2a9} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{f4bdbc0f-8644-b1aa-6968-c175de33b2a9}\NoExplorer = "\"\"" C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f4bdbc0f-8644-b1aa-6968-c175de33b2a9}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\03ae7ed86d453a6b6fb5362d396c0908_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f4bdbc0f-8644-b1aa-6968-c175de33b2a9}\InProcServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f4bdbc0f-8644-b1aa-6968-c175de33b2a9} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f4bdbc0f-8644-b1aa-6968-c175de33b2a9}\ = "agadoo browser enhancer" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{f4bdbc0f-8644-b1aa-6968-c175de33b2a9}\InProcServer32 C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1004 wrote to memory of 3752 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1004 wrote to memory of 3752 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1004 wrote to memory of 3752 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\03ae7ed86d453a6b6fb5362d396c0908_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\03ae7ed86d453a6b6fb5362d396c0908_JaffaCakes118.dll

Network

Files

N/A