Malware Analysis Report

2024-10-19 10:47

Sample ID 240620-hgzgravamc
Target 03bc1d04f70e19bb81c708d76e691980_JaffaCakes118
SHA256 b3748662638def24fb913047823d8053c23c33c7085924d39787e5e7068d74c6
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

b3748662638def24fb913047823d8053c23c33c7085924d39787e5e7068d74c6

Threat Level: Shows suspicious behavior

The file 03bc1d04f70e19bb81c708d76e691980_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 06:43

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-20 06:43

Reported

2024-06-20 06:45

Platform

win7-20240221-en

Max time kernel

118s

Max time network

119s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\03bc1d04f70e19bb81c708d76e691980_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\lfmssgagra = "C:\\Windows\\System32\\Rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\03bc1d04f70e19bb81c708d76e691980_JaffaCakes118.dll\" EntryPoint" 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\{3a763d55-20ab-c7db-48a7-8d8f487a7866} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{3a763d55-20ab-c7db-48a7-8d8f487a7866}\NoExplorer = "\"\"" C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3a763d55-20ab-c7db-48a7-8d8f487a7866} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3a763d55-20ab-c7db-48a7-8d8f487a7866}\ = "agadoo browser enhancer" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3a763d55-20ab-c7db-48a7-8d8f487a7866}\InProcServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3a763d55-20ab-c7db-48a7-8d8f487a7866}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\03bc1d04f70e19bb81c708d76e691980_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{3a763d55-20ab-c7db-48a7-8d8f487a7866}\InProcServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1584 wrote to memory of 2188 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1584 wrote to memory of 2188 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1584 wrote to memory of 2188 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1584 wrote to memory of 2188 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1584 wrote to memory of 2188 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1584 wrote to memory of 2188 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1584 wrote to memory of 2188 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\03bc1d04f70e19bb81c708d76e691980_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\03bc1d04f70e19bb81c708d76e691980_JaffaCakes118.dll

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-20 06:43

Reported

2024-06-20 06:45

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

151s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\03bc1d04f70e19bb81c708d76e691980_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\vbzfbcrqvuotrmed = "C:\\Windows\\System32\\Rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\03bc1d04f70e19bb81c708d76e691980_JaffaCakes118.dll\" EntryPoint" 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\{cdf5354e-e1ca-a049-6389-e8b14bfeba91} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{cdf5354e-e1ca-a049-6389-e8b14bfeba91}\NoExplorer = "\"\"" C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{cdf5354e-e1ca-a049-6389-e8b14bfeba91}\ = "agadoo browser enhancer" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{cdf5354e-e1ca-a049-6389-e8b14bfeba91}\InProcServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{cdf5354e-e1ca-a049-6389-e8b14bfeba91}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\03bc1d04f70e19bb81c708d76e691980_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{cdf5354e-e1ca-a049-6389-e8b14bfeba91}\InProcServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{cdf5354e-e1ca-a049-6389-e8b14bfeba91} C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4372 wrote to memory of 4404 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 4372 wrote to memory of 4404 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 4372 wrote to memory of 4404 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\03bc1d04f70e19bb81c708d76e691980_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\03bc1d04f70e19bb81c708d76e691980_JaffaCakes118.dll

Network

Country Destination Domain Proto
NL 52.142.223.178:80 tcp

Files

N/A