Malware Analysis Report

2025-01-18 21:37

Sample ID 240415-jtdw9acd2t
Target f09dd7bf2c18287c82cce63e7da843c5_JaffaCakes118
SHA256 b0f427fdf58ed305e1080c632d47aa19211060fea2709a6b52232ffd6a0de20c
Tags
adware 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

b0f427fdf58ed305e1080c632d47aa19211060fea2709a6b52232ffd6a0de20c

Threat Level: Shows suspicious behavior

The file f09dd7bf2c18287c82cce63e7da843c5_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

2024-04-15 07:57

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-15 07:57

Reported

2024-04-15 07:59

Platform

win7-20240215-en

Max time kernel

121s

Max time network

121s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f09dd7bf2c18287c82cce63e7da843c5_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\{0F8A0828-08AE-46B2-8019-52BB17D2F961} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Set value (data) \REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Internet Explorer\Main\Default = 28088a0fae08b246801952bb17d2f961 C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0F8A0828-08AE-46B2-8019-52BB17D2F961} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0F8A0828-08AE-46B2-8019-52BB17D2F961}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0F8A0828-08AE-46B2-8019-52BB17D2F961}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f09dd7bf2c18287c82cce63e7da843c5_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{0F8A0828-08AE-46B2-8019-52BB17D2F961}\InprocServer32\ThreadingModel = "Both" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3012 wrote to memory of 3032 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3012 wrote to memory of 3032 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3012 wrote to memory of 3032 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3012 wrote to memory of 3032 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3012 wrote to memory of 3032 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3012 wrote to memory of 3032 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3012 wrote to memory of 3032 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\f09dd7bf2c18287c82cce63e7da843c5_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\f09dd7bf2c18287c82cce63e7da843c5_JaffaCakes118.dll

Network

N/A

Files

memory/3032-0-0x00000000001B0000-0x00000000001D9000-memory.dmp

memory/3032-1-0x0000000010000000-0x0000000010025000-memory.dmp

memory/3032-3-0x0000000010000000-0x0000000010025000-memory.dmp

memory/3032-4-0x00000000001B0000-0x00000000001D9000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-15 07:57

Reported

2024-04-15 07:59

Platform

win10v2004-20240412-en

Max time kernel

93s

Max time network

113s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f09dd7bf2c18287c82cce63e7da843c5_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\{10104B4D-BD8D-4CAA-BF5B-5FF39FD09C89} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Set value (data) \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Default = 4d4b10108dbdaa4cbf5b5ff39fd09c89 C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{10104B4D-BD8D-4CAA-BF5B-5FF39FD09C89} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{10104B4D-BD8D-4CAA-BF5B-5FF39FD09C89}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{10104B4D-BD8D-4CAA-BF5B-5FF39FD09C89}\InprocServer32\ C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{10104B4D-BD8D-4CAA-BF5B-5FF39FD09C89}\InprocServer32\ThreadingModel = "Both" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 436 wrote to memory of 3092 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 436 wrote to memory of 3092 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 436 wrote to memory of 3092 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\f09dd7bf2c18287c82cce63e7da843c5_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\f09dd7bf2c18287c82cce63e7da843c5_JaffaCakes118.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.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 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.168:443 www.bing.com tcp
US 8.8.8.8:53 168.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 20.231.121.79:80 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 216.197.17.2.in-addr.arpa udp

Files

memory/3092-0-0x0000000000400000-0x0000000000429000-memory.dmp

memory/3092-1-0x0000000010000000-0x0000000010025000-memory.dmp

memory/3092-3-0x0000000010000000-0x0000000010025000-memory.dmp

memory/3092-4-0x0000000000400000-0x0000000000429000-memory.dmp