Malware Analysis Report

2025-08-11 01:15

Sample ID 241021-ksfvwsygrr
Target 6632b6775e5ad0bcfa875e9cc71c0439_JaffaCakes118
SHA256 4b454cd6f86479a057b5289ab160018d52d8397f844a7993ad5bfe602c41ca85
Tags
discovery spyware stealer
score
7/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
7/10

SHA256

4b454cd6f86479a057b5289ab160018d52d8397f844a7993ad5bfe602c41ca85

Threat Level: Shows suspicious behavior

The file 6632b6775e5ad0bcfa875e9cc71c0439_JaffaCakes118 was found to be: Shows suspicious behavior.

Malicious Activity Summary

discovery spyware stealer

Reads user/profile data of web browsers

System Location Discovery: System Language Discovery

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-10-21 08:51

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-21 08:51

Reported

2024-10-21 08:54

Platform

win10v2004-20241007-en

Max time kernel

150s

Max time network

150s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6632b6775e5ad0bcfa875e9cc71c0439_JaffaCakes118.dll,#1

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4836 wrote to memory of 768 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4836 wrote to memory of 768 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4836 wrote to memory of 768 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6632b6775e5ad0bcfa875e9cc71c0439_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6632b6775e5ad0bcfa875e9cc71c0439_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 376 -p 768 -ip 768

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 768 -s 624

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 75.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/768-0-0x0000000010000000-0x0000000010012000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-21 08:51

Reported

2024-10-21 08:54

Platform

win7-20241010-en

Max time kernel

122s

Max time network

128s

Command Line

C:\Windows\Explorer.EXE

Signatures

Reads user/profile data of web browsers

spyware stealer

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Processes

C:\Windows\Explorer.EXE

C:\Windows\Explorer.EXE

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6632b6775e5ad0bcfa875e9cc71c0439_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\6632b6775e5ad0bcfa875e9cc71c0439_JaffaCakes118.dll,#1

Network

N/A

Files

memory/2316-0-0x0000000010000000-0x0000000010012000-memory.dmp

memory/1256-1-0x00000000029A0000-0x00000000029A1000-memory.dmp