Malware Analysis Report

2025-01-18 21:37

Sample ID 240415-kdaekaac94
Target f0a94fa88917463ade3432563abff492_JaffaCakes118
SHA256 4799ad9f38b0233b64b8a675ba67a14988c2be3a36e50140b136c55cf585b810
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

4799ad9f38b0233b64b8a675ba67a14988c2be3a36e50140b136c55cf585b810

Threat Level: Shows suspicious behavior

The file f0a94fa88917463ade3432563abff492_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

adware stealer

Loads dropped DLL

Executes dropped EXE

Installs/modifies Browser Helper Object

Drops file in System32 directory

Unsigned PE

Modifies registry class

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-15 08:28

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-15 08:28

Reported

2024-04-15 08:31

Platform

win7-20240221-en

Max time kernel

120s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f0a94fa88917463ade3432563abff492_JaffaCakes118.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\sxe37C5.tmp 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\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000} C:\Users\Admin\AppData\Local\Temp\sxe37C5.tmp N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\mscorews.dll C:\Users\Admin\AppData\Local\Temp\sxe37C5.tmp N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\sxe37C5.tmp N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node C:\Users\Admin\AppData\Local\Temp\sxe37C5.tmp N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000} C:\Users\Admin\AppData\Local\Temp\sxe37C5.tmp N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}\InprocServer32\ = "C:\\Windows\\SysWow64\\mscorews.dll" C:\Users\Admin\AppData\Local\Temp\sxe37C5.tmp N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}\InprocServer32\ThreadingModel = "Apartment" C:\Users\Admin\AppData\Local\Temp\sxe37C5.tmp N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}\TypeLib C:\Users\Admin\AppData\Local\Temp\sxe37C5.tmp N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID C:\Users\Admin\AppData\Local\Temp\sxe37C5.tmp N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}\TypeLib\ = "{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}" C:\Users\Admin\AppData\Local\Temp\sxe37C5.tmp N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}\ = "mscorews" C:\Users\Admin\AppData\Local\Temp\sxe37C5.tmp N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f0a94fa88917463ade3432563abff492_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f0a94fa88917463ade3432563abff492_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\sxe37C5.tmp

"C:\Users\Admin\AppData\Local\Temp\sxe37C5.tmp"

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\sxe37B3.tmp

MD5 bd815b61f9948f93aface4033fbb4423
SHA1 b5391484009b39053fc8b1bba63d444969bafcfa
SHA256 b018bf9e9f8b6d945e6a2a25984970634884afabc580af2b4e855730520d5d76
SHA512 a363abe97b5a44e5d36af859e8d484daffe1d8e321c87969a75d1bfaa4288a5e6be1922a02c6d72937c84e81a79a1c7f6c9f2a44a995cac3f993ed5608afcd71

\Users\Admin\AppData\Local\Temp\sxe37C5.tmp

MD5 f722de53e7fffed004aea381ac288f01
SHA1 d6a947522f04bd4ffe94b0b9d5ccdeef896e4c24
SHA256 e776807e089b866575c6c7a80e65762ed1f5c6beca5b0545636cad27f6f72790
SHA512 e777dd471f99e523b853606c81bf51e2d64191f72acf42fc3cadee621d02169b96580b02f5ad4ff3cd9ee24f117c741a13080e149ed82e8d3c6aa5dc7e478970

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-15 08:28

Reported

2024-04-15 08:31

Platform

win10v2004-20240412-en

Max time kernel

142s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f0a94fa88917463ade3432563abff492_JaffaCakes118.exe"

Signatures

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\sxe83D8.tmp 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\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000} C:\Users\Admin\AppData\Local\Temp\sxe83D8.tmp N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\mscorews.dll C:\Users\Admin\AppData\Local\Temp\sxe83D8.tmp N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}\TypeLib C:\Users\Admin\AppData\Local\Temp\sxe83D8.tmp N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}\TypeLib\ = "{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}" C:\Users\Admin\AppData\Local\Temp\sxe83D8.tmp N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}\ = "mscorews" C:\Users\Admin\AppData\Local\Temp\sxe83D8.tmp N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}\InprocServer32 C:\Users\Admin\AppData\Local\Temp\sxe83D8.tmp N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000} C:\Users\Admin\AppData\Local\Temp\sxe83D8.tmp N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}\InprocServer32\ = "C:\\Windows\\SysWow64\\mscorews.dll" C:\Users\Admin\AppData\Local\Temp\sxe83D8.tmp N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node C:\Users\Admin\AppData\Local\Temp\sxe83D8.tmp N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID C:\Users\Admin\AppData\Local\Temp\sxe83D8.tmp N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{00009E9F-DDD7-AA59-AA7D-AA4B7D6BE000}\InprocServer32\ThreadingModel = "Apartment" C:\Users\Admin\AppData\Local\Temp\sxe83D8.tmp N/A

Processes

C:\Users\Admin\AppData\Local\Temp\f0a94fa88917463ade3432563abff492_JaffaCakes118.exe

"C:\Users\Admin\AppData\Local\Temp\f0a94fa88917463ade3432563abff492_JaffaCakes118.exe"

C:\Users\Admin\AppData\Local\Temp\sxe83D8.tmp

"C:\Users\Admin\AppData\Local\Temp\sxe83D8.tmp"

Network

Country Destination Domain Proto
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
US 8.8.8.8:53 147.177.190.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.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 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
US 8.8.8.8:53 16.173.189.20.in-addr.arpa udp

Files

C:\Users\Admin\AppData\Local\Temp\sxe83C6.tmp

MD5 bd815b61f9948f93aface4033fbb4423
SHA1 b5391484009b39053fc8b1bba63d444969bafcfa
SHA256 b018bf9e9f8b6d945e6a2a25984970634884afabc580af2b4e855730520d5d76
SHA512 a363abe97b5a44e5d36af859e8d484daffe1d8e321c87969a75d1bfaa4288a5e6be1922a02c6d72937c84e81a79a1c7f6c9f2a44a995cac3f993ed5608afcd71

C:\Users\Admin\AppData\Local\Temp\sxe83D8.tmp

MD5 f722de53e7fffed004aea381ac288f01
SHA1 d6a947522f04bd4ffe94b0b9d5ccdeef896e4c24
SHA256 e776807e089b866575c6c7a80e65762ed1f5c6beca5b0545636cad27f6f72790
SHA512 e777dd471f99e523b853606c81bf51e2d64191f72acf42fc3cadee621d02169b96580b02f5ad4ff3cd9ee24f117c741a13080e149ed82e8d3c6aa5dc7e478970