Malware Analysis Report

2025-01-18 22:20

Sample ID 240502-lfdqfaea5t
Target 0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118
SHA256 d131161b8e0c51e4103076d72d2d2e6721ed221d12fcdad3958a83bd2923f832
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

d131161b8e0c51e4103076d72d2d2e6721ed221d12fcdad3958a83bd2923f832

Threat Level: Shows suspicious behavior

The file 0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

adware stealer

Installs/modifies Browser Helper Object

Unsigned PE

Modifies registry class

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-02 09:28

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-02 09:28

Reported

2024-05-02 09:30

Platform

win7-20240221-en

Max time kernel

117s

Max time network

118s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0e1fc303b84cecfd64a46a1f4b09cadf_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\{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118.sh C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118.sh\Clsid C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3}\ProgID C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3}\ = "sh" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118.sh\ = "sh" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118.sh\Clsid\ = "{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3}" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3}\ProgID\ = "0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118.sh" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1048 wrote to memory of 2972 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1048 wrote to memory of 2972 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1048 wrote to memory of 2972 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1048 wrote to memory of 2972 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1048 wrote to memory of 2972 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1048 wrote to memory of 2972 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1048 wrote to memory of 2972 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\0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118.dll

Network

N/A

Files

memory/2972-0-0x0000000002260000-0x0000000002308000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-02 09:28

Reported

2024-05-02 09:30

Platform

win10v2004-20240426-en

Max time kernel

92s

Max time network

93s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0e1fc303b84cecfd64a46a1f4b09cadf_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\{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3}\ = "sh" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118.sh C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118.sh\ = "sh" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118.sh\Clsid\ = "{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3}" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3}\ProgID C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3}\ProgID\ = "0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118.sh" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3} C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{CC01FC6C-1D61-1B44-8286-8E8BC8BA31E3}\InprocServer32\ThreadingModel = "Apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118.sh\Clsid C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4080 wrote to memory of 4216 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 4080 wrote to memory of 4216 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 4080 wrote to memory of 4216 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\0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\0e1fc303b84cecfd64a46a1f4b09cadf_JaffaCakes118.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.99:443 www.bing.com tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 77.190.18.2.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 99.61.62.23.in-addr.arpa udp
NL 23.62.61.99:443 www.bing.com tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp

Files

N/A