Malware Analysis Report

2025-01-18 21:46

Sample ID 240415-dkhk7ada29
Target f027085d3bcedc12976026e68afc2909_JaffaCakes118
SHA256 7bf834c098aa6bbb8e2aaff60f508d2732f44f3407dea201d5b5dc95ec7a5fd0
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

7bf834c098aa6bbb8e2aaff60f508d2732f44f3407dea201d5b5dc95ec7a5fd0

Threat Level: Shows suspicious behavior

The file f027085d3bcedc12976026e68afc2909_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

adware stealer

Checks computer location settings

Deletes itself

Installs/modifies Browser Helper Object

Drops file in System32 directory

Unsigned PE

Enumerates physical storage devices

Modifies Internet Explorer settings

Modifies registry class

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-15 03:03

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-15 03:03

Reported

2024-04-15 03:06

Platform

win7-20240221-en

Max time kernel

121s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_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\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760} C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\kaxs.dat C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\rbsgam.dll C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A

Enumerates physical storage devices

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Internet Explorer\Main\Enable Browser Extensions = "yes" C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\InprocServer32\ = "rbsgam.dll" C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\TypeLib C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760} C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\ = "Rmn plugin" C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\TypeLib\ = "{43F108CF-4818-4468-8C7A-5F32FC8F6A8D}" C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\InprocServer32\ThreadingModel = "Apartment" C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\ProgID C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\ProgID\ = "RITLAB.1" C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\F02708~1.EXE >> NUL

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-15 03:03

Reported

2024-04-15 03:06

Platform

win10v2004-20240412-en

Max time kernel

120s

Max time network

113s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_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\f027085d3bcedc12976026e68afc2909_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\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760} C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\kaxs.dat C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\rbsgam.dll C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_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\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\ = "Rmn plugin" C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\TypeLib C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\TypeLib\ = "{43F108CF-4818-4468-8C7A-5F32FC8F6A8D}" C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760} C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\InprocServer32\ = "rbsgam.dll" C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\InprocServer32\ThreadingModel = "Apartment" C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\ProgID C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\ProgID\ = "RITLAB.1" C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{5BEEFD1C-446F-48a7-A7C7-C8E5986A9760}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f027085d3bcedc12976026e68afc2909_JaffaCakes118.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\F02708~1.EXE >> NUL

Network

Country Destination Domain Proto
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.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 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.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 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

N/A