Malware Analysis Report

2025-01-18 21:46

Sample ID 240414-2zhfqsah2t
Target efb6e28896a537555035f4cd6b9c463b_JaffaCakes118
SHA256 d19ba74bc734005164966c6478b469f15144c6d5833370e8e3bb0d36a162e0ad
Tags
aspackv2 adware stealer
score
7/10

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
7/10

SHA256

d19ba74bc734005164966c6478b469f15144c6d5833370e8e3bb0d36a162e0ad

Threat Level: Shows suspicious behavior

The file efb6e28896a537555035f4cd6b9c463b_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

aspackv2 adware stealer

ASPack v2.12-2.42

Installs/modifies Browser Helper Object

Unsigned PE

Suspicious use of WriteProcessMemory

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-14 23:01

Signatures

ASPack v2.12-2.42

aspackv2
Description Indicator Process Target
N/A N/A N/A N/A

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-14 23:01

Reported

2024-04-14 23:03

Platform

win7-20240221-en

Max time kernel

121s

Max time network

128s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\efb6e28896a537555035f4cd6b9c463b_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\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B}\ C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\efb6e28896a537555035f4cd6b9c463b_JaffaCakes118.Conex\ C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\efb6e28896a537555035f4cd6b9c463b_JaffaCakes118.Conex\Clsid C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B}\ProgID C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B}\ C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\efb6e28896a537555035f4cd6b9c463b_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\efb6e28896a537555035f4cd6b9c463b_JaffaCakes118.Conex C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\efb6e28896a537555035f4cd6b9c463b_JaffaCakes118.Conex\Clsid\ = "{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B}" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B}\ProgID\ = "efb6e28896a537555035f4cd6b9c463b_JaffaCakes118.Conex" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2716 wrote to memory of 3052 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2716 wrote to memory of 3052 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2716 wrote to memory of 3052 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2716 wrote to memory of 3052 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2716 wrote to memory of 3052 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2716 wrote to memory of 3052 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2716 wrote to memory of 3052 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\efb6e28896a537555035f4cd6b9c463b_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\efb6e28896a537555035f4cd6b9c463b_JaffaCakes118.dll

Network

N/A

Files

memory/3052-0-0x00000000143C0000-0x00000000144CE000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-14 23:01

Reported

2024-04-14 23:03

Platform

win10v2004-20240412-en

Max time kernel

147s

Max time network

156s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\efb6e28896a537555035f4cd6b9c463b_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\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B}\ C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\efb6e28896a537555035f4cd6b9c463b_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\efb6e28896a537555035f4cd6b9c463b_JaffaCakes118.Conex C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\efb6e28896a537555035f4cd6b9c463b_JaffaCakes118.Conex\Clsid C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B}\ProgID\ = "efb6e28896a537555035f4cd6b9c463b_JaffaCakes118.Conex" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B}\ C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\efb6e28896a537555035f4cd6b9c463b_JaffaCakes118.Conex\ C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\efb6e28896a537555035f4cd6b9c463b_JaffaCakes118.Conex\Clsid\ = "{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B}" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{7EDA5F65-3547-4CCE-B9D0-96FFC105AC8B}\ProgID C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3432 wrote to memory of 5096 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3432 wrote to memory of 5096 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3432 wrote to memory of 5096 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\efb6e28896a537555035f4cd6b9c463b_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\efb6e28896a537555035f4cd6b9c463b_JaffaCakes118.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.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 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 17.173.189.20.in-addr.arpa udp

Files

memory/5096-0-0x00000000143C0000-0x00000000144CE000-memory.dmp

memory/5096-1-0x00000000011D0000-0x00000000011D1000-memory.dmp