Malware Analysis Report

2025-01-22 12:59

Sample ID 240626-k3xw6azdlk
Target 11767195bd33a699bf574731ccb7165a_JaffaCakes118
SHA256 9d1def91f411553793f21beecd1d70dd76997b6008d42a2531c0977dbffc63b1
Tags
persistence vmprotect
score
8/10

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
8/10

SHA256

9d1def91f411553793f21beecd1d70dd76997b6008d42a2531c0977dbffc63b1

Threat Level: Likely malicious

The file 11767195bd33a699bf574731ccb7165a_JaffaCakes118 was found to be: Likely malicious.

Malicious Activity Summary

persistence vmprotect

Server Software Component: Terminal Services DLL

VMProtect packed file

Program crash

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-26 09:08

Signatures

VMProtect packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-26 09:08

Reported

2024-06-26 09:10

Platform

win7-20240611-en

Max time kernel

119s

Max time network

121s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\11767195bd33a699bf574731ccb7165a_JaffaCakes118.dll,#1

Signatures

Server Software Component: Terminal Services DLL

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MediaCenter\Parameters\ServiceDll = "Ú\x01\u0090\u0081\u009d1m¼Ú\x01\u0090\u0081\u009d1m¼Ú\x01\u0090\u0081\u009d1m¼Ú\x01p£$´p¼Ú\x01" C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2204 wrote to memory of 2040 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2204 wrote to memory of 2040 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2204 wrote to memory of 2040 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2204 wrote to memory of 2040 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2204 wrote to memory of 2040 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2204 wrote to memory of 2040 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2204 wrote to memory of 2040 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\11767195bd33a699bf574731ccb7165a_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\11767195bd33a699bf574731ccb7165a_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k krnlsrvc

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k krnlsrvc

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-26 09:08

Reported

2024-06-26 09:10

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

58s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\11767195bd33a699bf574731ccb7165a_JaffaCakes118.dll,#1

Signatures

Program crash

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4276 wrote to memory of 2284 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4276 wrote to memory of 2284 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4276 wrote to memory of 2284 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\11767195bd33a699bf574731ccb7165a_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\11767195bd33a699bf574731ccb7165a_JaffaCakes118.dll,#1

C:\Windows\SysWOW64\svchost.exe

C:\Windows\SysWOW64\svchost.exe -k krnlsrvc

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2284 -ip 2284

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2284 -s 684

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp

Files

N/A