Malware Analysis Report

2025-01-18 22:09

Sample ID 240501-yrs1qahe75
Target 0cb7acc2b0ba2669840ef5139adf7ce2_JaffaCakes118
SHA256 ef636152272f611a29a78685dc0fe6926ee670d3544d0cffda8ea84e783832d4
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

ef636152272f611a29a78685dc0fe6926ee670d3544d0cffda8ea84e783832d4

Threat Level: Shows suspicious behavior

The file 0cb7acc2b0ba2669840ef5139adf7ce2_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

2024-05-01 20:01

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-01 20:01

Reported

2024-05-01 20:04

Platform

win7-20240221-en

Max time kernel

120s

Max time network

120s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0cb7acc2b0ba2669840ef5139adf7ce2_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\{BEB4B579-E795-4C11-9B62-28B472F5B897} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{BEB4B579-E795-4C11-9B62-28B472F5B897}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{BEB4B579-E795-4C11-9B62-28B472F5B897} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{BEB4B579-E795-4C11-9B62-28B472F5B897}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\0cb7acc2b0ba2669840ef5139adf7ce2_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{BEB4B579-E795-4C11-9B62-28B472F5B897}\InprocServer32\ThreadingModel = "apartment" C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1676 wrote to memory of 2056 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1676 wrote to memory of 2056 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1676 wrote to memory of 2056 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1676 wrote to memory of 2056 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1676 wrote to memory of 2056 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1676 wrote to memory of 2056 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1676 wrote to memory of 2056 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\0cb7acc2b0ba2669840ef5139adf7ce2_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\0cb7acc2b0ba2669840ef5139adf7ce2_JaffaCakes118.dll

Network

N/A

Files

memory/2056-0-0x00000000001D0000-0x000000000020A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-01 20:01

Reported

2024-05-01 20:04

Platform

win10v2004-20240419-en

Max time kernel

138s

Max time network

124s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0cb7acc2b0ba2669840ef5139adf7ce2_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\{8242FAA0-937B-42B0-B674-88B234E2BA07} C:\Windows\SysWOW64\regsvr32.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8242FAA0-937B-42B0-B674-88B234E2BA07} C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8242FAA0-937B-42B0-B674-88B234E2BA07}\InprocServer32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\0cb7acc2b0ba2669840ef5139adf7ce2_JaffaCakes118.dll" C:\Windows\SysWOW64\regsvr32.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8242FAA0-937B-42B0-B674-88B234E2BA07}\InprocServer32\ThreadingModel = "apartment" C:\Windows\SysWOW64\regsvr32.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{8242FAA0-937B-42B0-B674-88B234E2BA07}\InprocServer32 C:\Windows\SysWOW64\regsvr32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 800 wrote to memory of 3744 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 800 wrote to memory of 3744 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 800 wrote to memory of 3744 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\0cb7acc2b0ba2669840ef5139adf7ce2_JaffaCakes118.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\0cb7acc2b0ba2669840ef5139adf7ce2_JaffaCakes118.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 99.58.20.217.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
NL 23.62.61.121:443 www.bing.com tcp
US 8.8.8.8:53 121.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 138.201.86.20.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 23.87.200.23.in-addr.arpa udp
US 8.8.8.8:53 44.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 76.143.109.104.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
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 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp

Files

N/A