Malware Analysis Report

2025-01-18 21:40

Sample ID 240415-t3pp8adc4w
Target f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118
SHA256 a7a09f3a2c96aa2fd5e0dca7114ee501e539b34839cc37688fef9e4010184693
Tags
adware persistence 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

a7a09f3a2c96aa2fd5e0dca7114ee501e539b34839cc37688fef9e4010184693

Threat Level: Shows suspicious behavior

The file f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

adware persistence stealer

Adds Run key to start application

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 16:35

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-15 16:35

Reported

2024-04-15 16:37

Platform

win7-20240221-en

Max time kernel

121s

Max time network

124s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\kthuxtfnxgp = "C:\\Windows\\System32\\Rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll\" EntryPoint" C:\Windows\SysWOW64\regsvr32.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\{4de47d76-7412-36f5-d96b-57091fb9cfa6} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\explorer\Browser Helper Objects\{4de47d76-7412-36f5-d96b-57091fb9cfa6}\NoExplorer = "\"\"" C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4de47d76-7412-36f5-d96b-57091fb9cfa6}\InProcServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4de47d76-7412-36f5-d96b-57091fb9cfa6} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4de47d76-7412-36f5-d96b-57091fb9cfa6}\ = "rightonadz browser enhancer" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4de47d76-7412-36f5-d96b-57091fb9cfa6}\InProcServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{4de47d76-7412-36f5-d96b-57091fb9cfa6}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2136 wrote to memory of 2676 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2136 wrote to memory of 2676 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2136 wrote to memory of 2676 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2136 wrote to memory of 2676 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2136 wrote to memory of 2676 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2136 wrote to memory of 2676 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2136 wrote to memory of 2676 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\f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-15 16:35

Reported

2024-04-15 16:37

Platform

win10v2004-20240226-en

Max time kernel

143s

Max time network

149s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll

Signatures

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\yixnpurzrzpm = "C:\\Windows\\System32\\Rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll\" EntryPoint" C:\Windows\SysWOW64\regsvr32.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\{9bbcb286-402f-5820-e643-e3181efe0ba6}\NoExplorer = "\"\"" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{9bbcb286-402f-5820-e643-e3181efe0ba6} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9bbcb286-402f-5820-e643-e3181efe0ba6}\InProcServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9bbcb286-402f-5820-e643-e3181efe0ba6}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9bbcb286-402f-5820-e643-e3181efe0ba6}\InProcServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9bbcb286-402f-5820-e643-e3181efe0ba6} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{9bbcb286-402f-5820-e643-e3181efe0ba6}\ = "rightonadz browser enhancer" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4832 wrote to memory of 1300 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 4832 wrote to memory of 1300 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 4832 wrote to memory of 1300 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\f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\f17ff9608a0dad9bf419eafe1e8def3f_JaffaCakes118.dll

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4036 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 23.159.190.20.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 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 13.107.246.64:443 tcp
US 8.8.8.8:53 31.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 105.193.132.51.in-addr.arpa udp

Files

N/A