Malware Analysis Report

2025-01-18 22:00

Sample ID 240622-qd23gayhpd
Target 0249fbe699f6cc74540a4c6a818f6010_JaffaCakes118
SHA256 779e0c6f4e300d834bdbc3bf17ce53a4cbd9701850e291967aad5219a643b658
Tags
adware stealer
score
6/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
6/10

SHA256

779e0c6f4e300d834bdbc3bf17ce53a4cbd9701850e291967aad5219a643b658

Threat Level: Shows suspicious behavior

The file 0249fbe699f6cc74540a4c6a818f6010_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

adware stealer

Installs/modifies Browser Helper Object

Unsigned PE

Modifies Internet Explorer settings

Modifies registry class

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-22 13:09

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-22 13:09

Reported

2024-06-22 13:12

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

51s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0249fbe699f6cc74540a4c6a818f6010_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\{81CD5BDF-5ED7-44A5-9719-BE148AC39922} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Set value (data) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Default = df5bcd81d75ea5449719be148ac39922 C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{81CD5BDF-5ED7-44A5-9719-BE148AC39922} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{81CD5BDF-5ED7-44A5-9719-BE148AC39922}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{81CD5BDF-5ED7-44A5-9719-BE148AC39922}\InprocServer32\ C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{81CD5BDF-5ED7-44A5-9719-BE148AC39922}\InprocServer32\ThreadingModel = "Both" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3580 wrote to memory of 4876 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3580 wrote to memory of 4876 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3580 wrote to memory of 4876 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\0249fbe699f6cc74540a4c6a818f6010_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\0249fbe699f6cc74540a4c6a818f6010_JaffaCakes118.dll

Network

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

Files

memory/4876-0-0x0000000000400000-0x0000000000421000-memory.dmp

memory/4876-1-0x0000000010000000-0x000000001001D000-memory.dmp

memory/4876-2-0x0000000000400000-0x0000000000421000-memory.dmp

memory/4876-3-0x0000000010000000-0x000000001001D000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-22 13:09

Reported

2024-06-22 13:12

Platform

win7-20240508-en

Max time kernel

119s

Max time network

119s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0249fbe699f6cc74540a4c6a818f6010_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\{34F7C845-A771-4E05-86C7-CC16E3F4F4Fc} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Set value (data) \REGISTRY\USER\S-1-5-21-3691908287-3775019229-3534252667-1000\Software\Microsoft\Internet Explorer\Main\Default = 45c8f73471a7054e86c7cc16e3f4f4fc C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{34F7C845-A771-4E05-86C7-CC16E3F4F4Fc} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{34F7C845-A771-4E05-86C7-CC16E3F4F4Fc}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{34F7C845-A771-4E05-86C7-CC16E3F4F4Fc}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\0249fbe699f6cc74540a4c6a818f6010_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{34F7C845-A771-4E05-86C7-CC16E3F4F4Fc}\InprocServer32\ThreadingModel = "Both" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1036 wrote to memory of 2232 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1036 wrote to memory of 2232 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1036 wrote to memory of 2232 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1036 wrote to memory of 2232 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1036 wrote to memory of 2232 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1036 wrote to memory of 2232 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1036 wrote to memory of 2232 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\0249fbe699f6cc74540a4c6a818f6010_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\0249fbe699f6cc74540a4c6a818f6010_JaffaCakes118.dll

Network

N/A

Files

memory/2232-0-0x0000000000190000-0x00000000001B1000-memory.dmp

memory/2232-1-0x0000000010000000-0x000000001001D000-memory.dmp

memory/2232-3-0x0000000000190000-0x00000000001B1000-memory.dmp

memory/2232-4-0x0000000010000000-0x000000001001D000-memory.dmp