Malware Analysis Report

2025-01-18 21:36

Sample ID 240415-hyya1shc83
Target f08c0fd6d49f45362e024170fe44b8b8_JaffaCakes118
SHA256 3e1647d1d69a1fed8b88ea1265089c0f4245ad58254d76c68df3ec4db453a015
Tags
upx 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

3e1647d1d69a1fed8b88ea1265089c0f4245ad58254d76c68df3ec4db453a015

Threat Level: Shows suspicious behavior

The file f08c0fd6d49f45362e024170fe44b8b8_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

upx adware stealer

ACProtect 1.3x - 1.4x DLL software

UPX packed file

Installs/modifies Browser Helper Object

Unsigned PE

Modifies registry class

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-15 07:09

Signatures

ACProtect 1.3x - 1.4x DLL software

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

UPX packed file

upx
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
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-15 07:09

Reported

2024-04-15 07:11

Platform

win7-20240221-en

Max time kernel

117s

Max time network

120s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f08c0fd6d49f45362e024170fe44b8b8_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\{99BA268B-4021-4739-9945-3C774217FE75} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{99BA268B-4021-4739-9945-3C774217FE75}\ C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\Classes\Wow6432Node\CLSID\{99BA268B-4021-4739-9945-3C774217FE75} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{99BA268B-4021-4739-9945-3C774217FE75}\xxx = "xxx" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\Software\Classes\Wow6432Node\CLSID\{99BA268B-4021-4739-9945-3C774217FE75}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{99BA268B-4021-4739-9945-3C774217FE75}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f08c0fd6d49f45362e024170fe44b8b8_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{99BA268B-4021-4739-9945-3C774217FE75}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f08c0fd6d49f45362e024170fe44b8b8_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\f08c0fd6d49f45362e024170fe44b8b8_JaffaCakes118.dll

Network

N/A

Files

memory/2748-0-0x0000000010000000-0x000000001000A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-15 07:09

Reported

2024-04-15 07:11

Platform

win10v2004-20240412-en

Max time kernel

93s

Max time network

112s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f08c0fd6d49f45362e024170fe44b8b8_JaffaCakes118.dll

Signatures

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A 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\{99BA268B-4021-4739-9945-3C774217FE75} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{99BA268B-4021-4739-9945-3C774217FE75}\ C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{99BA268B-4021-4739-9945-3C774217FE75}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f08c0fd6d49f45362e024170fe44b8b8_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{99BA268B-4021-4739-9945-3C774217FE75}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\Software\Classes\WOW6432Node\CLSID\{99BA268B-4021-4739-9945-3C774217FE75} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{99BA268B-4021-4739-9945-3C774217FE75}\xxx = "xxx" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\Software\Classes\WOW6432Node\CLSID\{99BA268B-4021-4739-9945-3C774217FE75}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 516 wrote to memory of 4008 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 516 wrote to memory of 4008 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 516 wrote to memory of 4008 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\f08c0fd6d49f45362e024170fe44b8b8_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\f08c0fd6d49f45362e024170fe44b8b8_JaffaCakes118.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 28.143.109.104.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp

Files

memory/4008-0-0x0000000010000000-0x000000001000A000-memory.dmp