Malware Analysis Report

2025-01-18 21:39

Sample ID 240415-tzqs4sah72
Target f17df1907ec37429d08fe4147cf64e0d_JaffaCakes118
SHA256 afc646d02072d606db9479d82ceabec473de2d41607ef86452260977e9928a05
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

afc646d02072d606db9479d82ceabec473de2d41607ef86452260977e9928a05

Threat Level: Shows suspicious behavior

The file f17df1907ec37429d08fe4147cf64e0d_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

adware stealer

Installs/modifies Browser Helper Object

Unsigned PE

Suspicious use of WriteProcessMemory

Modifies registry class

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-15 16:29

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-15 16:29

Reported

2024-04-15 16:32

Platform

win7-20240221-en

Max time kernel

119s

Max time network

122s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f17df1907ec37429d08fe4147cf64e0d_JaffaCakes118.dll

Signatures

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1932 wrote to memory of 2224 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1932 wrote to memory of 2224 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1932 wrote to memory of 2224 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1932 wrote to memory of 2224 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1932 wrote to memory of 2224 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1932 wrote to memory of 2224 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1932 wrote to memory of 2224 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\f17df1907ec37429d08fe4147cf64e0d_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\f17df1907ec37429d08fe4147cf64e0d_JaffaCakes118.dll

Network

N/A

Files

memory/2224-0-0x0000000010000000-0x0000000010009000-memory.dmp

memory/2224-1-0x0000000010000000-0x0000000010009000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-15 16:29

Reported

2024-04-15 16:32

Platform

win10v2004-20240412-en

Max time kernel

97s

Max time network

139s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f17df1907ec37429d08fe4147cf64e0d_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\{8A5849C4-93F3-429D-FF34-660A2068897C} C:\Windows\SysWOW64\regsvr32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\BROWSER HELPER OBJECTS\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA} C:\Windows\SysWOW64\regsvr32.exe N/A
Key deleted \REGISTRY\MACHINE\SOFTWARE\WOW6432NODE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\BROWSER HELPER OBJECTS\{1FD49718-1D00-4B19-AF5F-070AF6D5D54C} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8A5849C4-93F3-429D-FF34-660A2068897C}\InProcServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8A5849C4-93F3-429D-FF34-660A2068897C} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8A5849C4-93F3-429D-FF34-660A2068897C}\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f17df1907ec37429d08fe4147cf64e0d_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8A5849C4-93F3-429D-FF34-660A2068897C}\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8A5849C4-93F3-429D-FF34-660A2068897C}\InProcServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8A5849C4-93F3-429D-FF34-660A2068897C}\InProcServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\f17df1907ec37429d08fe4147cf64e0d_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3160 wrote to memory of 3548 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3160 wrote to memory of 3548 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3160 wrote to memory of 3548 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\f17df1907ec37429d08fe4147cf64e0d_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\f17df1907ec37429d08fe4147cf64e0d_JaffaCakes118.dll

Network

Country Destination Domain Proto
US 23.53.113.159:80 tcp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 3.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 21.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 123.10.44.20.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp

Files

memory/3548-0-0x0000000010000000-0x0000000010009000-memory.dmp