Malware Analysis Report

2025-01-18 21:39

Sample ID 240415-yqmsbahb2w
Target f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118
SHA256 e0280d09d87b5a3da57f4513570827d2f1ba65f1f189d96850f23e207e70ad3e
Tags
adware persistence stealer
score
8/10

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
8/10

SHA256

e0280d09d87b5a3da57f4513570827d2f1ba65f1f189d96850f23e207e70ad3e

Threat Level: Likely malicious

The file f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

adware persistence stealer

Adds policy Run key to start application

Loads dropped DLL

Installs/modifies Browser Helper Object

Drops file in System32 directory

Unsigned PE

Modifies Internet Explorer settings

Modifies Internet Explorer start page

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-15 19:59

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-15 19:59

Reported

2024-04-15 20:02

Platform

win7-20240221-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe"

Signatures

Adds policy Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\explorer\run C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\nvctrl.exe = "nvctrl.exe" C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_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\{4da4616d-7e6e-4fd9-a2d5-b6c535733e22} C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{4da4616d-7e6e-4fd9-a2d5-b6c535733e22}\ C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{18DF081C-E8AD-4283-A596-FA578C2EBDC3} C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{72853161-30C5-4D22-B7F9-0BBC1D38A37E} C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{B4F3A835-0E21-4959-BA22-42B3008E02FF} C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\hp1278.tmp C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\ncompat.tlb C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\ncompat.tlb C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\msvol.tlb C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Main C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Search C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\SearchUrl C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A

Modifies Internet Explorer start page

stealer
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Internet Explorer\Main\Start Page = "about:blank" C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\Classes\Wow6432Node\CLSID\{4da4616d-7e6e-4fd9-a2d5-b6c535733e22}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\Software\Classes\Wow6432Node\CLSID C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22} C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22}\ = "HomepageBHO" C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22}\InprocServer32\ = "C:\\Windows\\SysWow64\\hp1278.tmp" C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22}\InprocServer32\ThreadingModel = "Apartment" C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe"

Network

N/A

Files

\Windows\SysWOW64\hp1278.tmp

MD5 f6f0acbab6b77cfceb1a99728196ee44
SHA1 19fb35f4a009cae13d5af5e16e957bb5b9db4b66
SHA256 3c0b6fdfe2072f53011e8aceafebfab52a656cad7151fa442373ecded1bbc6f7
SHA512 61e9e588647a37b570d7a36b98fb89d652ade2bda53267a236c1f79f69cad6d065816ed7d46bdb79375ba2fe51ea072cefbb99433feac301d127d92611439635

\Windows\SysWOW64\msvol.tlb

MD5 e7afa16c233058649d7348fe6cedb3c9
SHA1 a183ce118461f883180a6146f320002421a5f540
SHA256 05623ad481a440cb866fb44f5e6394834422955685b64fc697e9ceb242627f8e
SHA512 286b64a7978c0863bc5ece49cdf9613212acd6b8d035a6ed46c32d3d77790b2c27d6cf9e5adeeb4f74b5f33cbdc9e831959980decbc89615f3053a9de13fe0ad

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-15 19:59

Reported

2024-04-15 20:02

Platform

win10v2004-20240412-en

Max time kernel

148s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe"

Signatures

Adds policy Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\explorer\run C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\nvctrl.exe = "nvctrl.exe" C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A

Installs/modifies Browser Helper Object

stealer adware
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{4da4616d-7e6e-4fd9-a2d5-b6c535733e22}\ C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\BROWSER HELPER OBJECTS\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C} C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\BROWSER HELPER OBJECTS\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA} C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{4da4616d-7e6e-4fd9-a2d5-b6c535733e22} C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\ncompat.tlb C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\msvol.tlb C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
File created C:\Windows\SysWOW64\hp5E8B.tmp C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
File opened for modification C:\Windows\SysWOW64\ncompat.tlb C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A

Modifies Internet Explorer settings

adware spyware
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1826666146-2574340311-1877551059-1000\Software\Microsoft\Internet Explorer\Main C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1826666146-2574340311-1877551059-1000\Software\Microsoft\Internet Explorer\Search C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1826666146-2574340311-1877551059-1000\Software\Microsoft\Internet Explorer\SearchUrl C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A

Modifies Internet Explorer start page

stealer
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1826666146-2574340311-1877551059-1000\SOFTWARE\Microsoft\Internet Explorer\Main\Start Page = "about:blank" C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\Software\Classes\WOW6432Node\CLSID\{4da4616d-7e6e-4fd9-a2d5-b6c535733e22}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\Software\Classes\WOW6432Node\CLSID C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22} C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22}\ = "HomepageBHO" C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22}\InprocServer32\ = "C:\\Windows\\SysWow64\\hp5E8B.tmp" C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{4DA4616D-7E6E-4FD9-A2D5-B6C535733E22}\InprocServer32\ThreadingModel = "Apartment" C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f1ce9c4e686f228f9d530be4afcb0c6e_JaffaCakes118.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 241.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 217.14.97.104.in-addr.arpa udp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 9.173.189.20.in-addr.arpa udp

Files

C:\Windows\SysWOW64\hp5E8B.tmp

MD5 f6f0acbab6b77cfceb1a99728196ee44
SHA1 19fb35f4a009cae13d5af5e16e957bb5b9db4b66
SHA256 3c0b6fdfe2072f53011e8aceafebfab52a656cad7151fa442373ecded1bbc6f7
SHA512 61e9e588647a37b570d7a36b98fb89d652ade2bda53267a236c1f79f69cad6d065816ed7d46bdb79375ba2fe51ea072cefbb99433feac301d127d92611439635

C:\Windows\SysWOW64\msvol.tlb

MD5 e7afa16c233058649d7348fe6cedb3c9
SHA1 a183ce118461f883180a6146f320002421a5f540
SHA256 05623ad481a440cb866fb44f5e6394834422955685b64fc697e9ceb242627f8e
SHA512 286b64a7978c0863bc5ece49cdf9613212acd6b8d035a6ed46c32d3d77790b2c27d6cf9e5adeeb4f74b5f33cbdc9e831959980decbc89615f3053a9de13fe0ad