Malware Analysis Report

2025-01-18 21:43

Sample ID 240415-ffv2tseh83
Target f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118
SHA256 0d47f6aafacdd1eeb046702a8f0df34b27b21cbbd41e91c48393fa9b512b2de5
Tags
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

0d47f6aafacdd1eeb046702a8f0df34b27b21cbbd41e91c48393fa9b512b2de5

Threat Level: Shows suspicious behavior

The file f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

adware stealer

Deletes itself

Checks computer location settings

Installs/modifies Browser Helper Object

Drops file in System32 directory

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Modifies Internet Explorer settings

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-15 04:49

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-15 04:49

Reported

2024-04-15 04:51

Platform

win7-20240220-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe"

Signatures

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.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 C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9} C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\vgf32.dll C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\dl.txt C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A

Enumerates physical storage devices

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "yes" C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9}\TypeLib\ = "{957C5424-4C33-4dbf-84E7-6FBC03400E49}" C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9}\InprocServer32\ = "vgf32.dll" C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9}\ProgID\ = "Jmc" C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9}\TypeLib C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9} C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9}\ = "Google plugin" C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9}\InprocServer32\ThreadingModel = "Apartment" C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9}\ProgID C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\F05861~1.EXE >> NUL

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-15 04:49

Reported

2024-04-15 04:52

Platform

win10v2004-20240412-en

Max time kernel

149s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.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 C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9} C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\dl.txt C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\vgf32.dll C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A

Enumerates physical storage devices

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "yes" C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9} C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9}\InprocServer32\ = "vgf32.dll" C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9}\ProgID C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9}\TypeLib C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9}\ = "Google plugin" C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9}\InprocServer32\ThreadingModel = "Apartment" C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9}\ProgID\ = "Jmc" C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{63845B64-69B6-4b9a-9461-C59B2AFDC0A9}\TypeLib\ = "{957C5424-4C33-4dbf-84E7-6FBC03400E49}" C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f05861ac21f1c73d85d1ce15de6acbf8_JaffaCakes118.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\F05861~1.EXE >> NUL

Network

Country Destination Domain Proto
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
US 8.8.8.8:53 36.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 101.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 200.79.70.13.in-addr.arpa udp

Files

N/A